JP7622474B2 - Electricity billing system, electricity billing program, and electricity billing device - Google Patents

Description

The present invention relates to an electricity billing system, an electricity billing program, and an electricity billing device.

Power management systems for apartment buildings have been developed (for example, Patent Documents 1 and 2). In Patent Document 1, an incentive is given to a resident when the amount of power consumed by the dwelling load is equal to or less than a first amount of power, and a penalty is imposed on the resident when the amount of power consumed by the dwelling load exceeds a second amount of power.

JP 2020-140268 A JP 2020-68554 A

For example, if a flat-rate incentive is given when power consumption falls below a first power amount, as in Patent Document 1, it is conceivable that tenants will lose motivation to conserve energy to the extent that power consumption remains above the first power amount. As a result, energy conservation may not be promoted. In this case, it is expected that reductions in the amount of energy purchased by bulk energy receiving businesses that receive energy in bulk and supply it to apartment complexes will not be promoted, and as a result, it will be difficult to promote reductions in the cost of purchasing electricity.

In one aspect, the present invention was made in consideration of this situation, and its purpose is to provide technology that increases the motivation of residents of apartment buildings to save electricity.

To solve the above problems, the present invention adopts the following configuration.

That is, an electricity billing system according to one aspect of the present invention is an electricity billing system for an apartment building, and includes a target power calculation unit that calculates a power consumption reduction target for each specified space in the apartment building, a refund calculation unit that calculates a refund amount to be paid to the residents of the apartment building based on the reduction target calculated by the target power calculation unit and the actual power consumption, and an electricity fee calculation unit that calculates the electricity fee to be charged to the residents based on the actual power consumption and the refund amount calculated by the refund calculation unit.

Here, the specified space includes the common areas of an apartment building or private areas of residents. The specified space also includes a building where multiple private areas of residents are gathered.

This configuration allows appropriate reduction targets to be set for each specified space. In addition, each resident can receive rebates according to the amount of electricity they reduce. This increases each resident's motivation to conserve electricity, which promotes energy conservation. Furthermore, as residents work to conserve electricity, they will have a deeper understanding of the environment and will become more aware of it. Furthermore, it will become possible for collective housing bulk electricity users to reduce the total amount of electricity purchased, and thus the amount of electricity purchased.

In the electricity billing system according to the above aspect, the electricity bill calculation unit may determine the rebate amount according to the degree of contribution of the actual reduction in power consumption.

Here, the contribution of the actual reduction in power consumption includes the ratio of the reduction amount to the sum of the reduction amounts of power consumption actually consumed in each specified space. The contribution of the actual reduction in power consumption also includes the ratio of the reduction achievement rate to the sum of the reduction achievement rate of power consumption actually consumed in each specified space. The contribution of the actual reduction in power consumption also includes whether or not the reduction amount of power consumption actually consumed in each specified space has reached the reduction target.

This configuration can increase the willingness of residents to conserve energy, which in turn promotes energy conservation. Furthermore, by residents making efforts to conserve energy, they will have a deeper understanding of the environment and will become more aware of it. Furthermore, it will become possible for collective housing bulk electricity users to reduce the total amount of electricity purchased, and therefore the amount of electricity purchased.

In the electricity billing system according to the above aspect, if the actual power consumption does not reach the reduction target, the electricity bill calculation unit may add a fee corresponding to the shortfall to the electricity bill corresponding to the actual power consumption.

This configuration reduces the chance of not achieving the power consumption reduction target. This makes it more likely that power saving will be promoted.

In the electricity billing system according to the above aspect, the electricity bill calculation unit may calculate the electricity bill without adding a fee corresponding to the shortfall to the electricity bill corresponding to the power consumption actually consumed when the power consumption actually consumed does not reach the reduction target.

This configuration prevents excessive economic or mental burdens from being placed on residents in order to save electricity.

In the electricity billing system according to one aspect described above, the target power calculation unit may calculate the reduction target based on at least one of the past power consumption of the entire apartment complex, the past power consumption obtained from power meters installed in the common areas and the private areas of the occupants in the apartment complex, and the electricity rate plan of the apartment complex.

This configuration allows appropriate power consumption reduction targets to be set, which increases the residents' motivation to save energy. Also, failure to achieve power consumption reduction targets is reduced, which makes energy conservation more likely to be promoted.

The electricity billing system according to the above aspect may further include a display unit that displays the reduction target and the actual power consumption.

With this configuration, the occupant can check the amount of power actually consumed. This allows the occupant to ascertain the amount of power that is short of the reduction target. This prevents the power consumption reduction target from being missed. This makes it more likely that energy conservation will be promoted.

The electricity billing system according to one aspect of the present invention may further include a determination unit that determines whether the actual power consumption is lower than a threshold for achieving the reduction target, and a notification unit that notifies the resident that the determination unit has determined that the actual power consumption is lower than the threshold for achieving the reduction target.

With this configuration, it is possible to urge residents who are in danger of not achieving their power consumption reduction targets to conserve electricity. This prevents the power consumption reduction targets from being missed.

An electricity billing program according to one aspect of the present invention is an electricity billing program for an apartment building, which causes a computer to execute a target power calculation step for calculating a power consumption reduction target for each specified space in the apartment building, a refund calculation step for calculating a refund amount to be paid to the residents of the apartment building based on the reduction target calculated in the target power calculation step and the actual power consumption, and an electricity fee calculation step for calculating an electricity fee to be charged to the residents based on the actual power consumption and the refund calculated in the refund calculation step.

An electricity billing device according to one aspect of the present invention is an electricity billing device for an apartment building, and includes a target power calculation unit that calculates a power consumption reduction target for each specified space in the apartment building, a refund calculation unit that calculates a refund amount to be paid to residents of the apartment building based on the reduction target calculated by the target power calculation unit and the actual power consumption, and an electricity bill calculation unit that calculates an electricity bill to be billed to the residents based on the actual power consumption and the refund calculated by the refund calculation unit.

The present invention provides technology that can increase the energy conservation motivation of residents of apartment buildings.

FIG. 1 illustrates an overview of an application example of an electricity billing system according to an embodiment. FIG. 2 illustrates an overview of an electricity billing system according to an embodiment. FIG. 3 illustrates an example of an outline of the functional configuration of the management device, the smartphone, and the server of the bulk power receiving business operator. FIG. 4 shows an example of an outline of a flowchart of the initial setting executed in the management device. FIG. 5 illustrates an example of a power consumption reduction target. FIG. 6 illustrates an outline of a flowchart for billing an electricity charge, which is implemented by the management device, the resident's smartphone, and the business operator's server. FIG. 7 is an example of the deletion request text. FIG. 8 shows an example of data on the power consumption reduction status displayed on the touch panel display of a smartphone. FIG. 9 is an example of the reminder letter. FIG. 10 shows a specific example of the refund amount. FIG. 11 illustrates an outline of the rebate rule according to the first modified example. FIG. 12 illustrates an outline of the rebate rule according to the second modified example. FIG. 13 illustrates an outline of the rebate rule according to the third modified example.

§1 Application Example Fig. 1 illustrates an outline of an application example of the electricity billing system 100 according to this embodiment. The electricity billing system 100 includes a management device 2 that manages electricity in an electricity supply system 1 that collectively receives electricity and supplies it to an apartment building, and a smartphone 2a owned by a resident. The management device 2 and the smartphone 2a are connected via a network (N). The smartphone 2a may be, for example, a tablet terminal, a laptop computer, or a desktop computer.

In the management device 2, a reduction target for the power consumption of each room in the apartment building is determined based on the past power consumption of each room. Then, based on the reduction target and the actual power reduction amount of each room,
The amount of the refund is determined for each resident who occupies a room. Then, the electricity bill minus the amount of the refund is notified to the smartphone 2a of each resident.

According to the electricity billing system 100 as described above, appropriate reduction targets can be set for each room. Furthermore, each resident can receive rebates according to the degree of energy saving. This increases each resident's motivation to save energy, which promotes energy saving. Furthermore, as residents work to save energy, they will have a deeper understanding of the environment and their awareness will improve. Furthermore, the collective energy receiving business for apartment complexes will be able to reduce the total amount of energy purchased, and thus the amount of energy purchased.

§2 Configuration Example Fig. 2 illustrates an overview of an electricity billing system 100 according to this embodiment (an example of an "electricity billing system" in the present disclosure). The electricity billing system 100 includes a management device 2 (an example of an "electricity billing device" in the present disclosure) that manages the power of the electricity supply system 1, a smartphone 2a owned or used by a tenant, and a server 2b owned or used by a bulk electricity receiving business operator (hereinafter also referred to as an owner) that collectively receives electricity and supplies it to an apartment building that is a power supply target of the electricity supply system 1. The management device 2, the smartphone 2a, and the server 2b are connected via a network (N).

The network (N) is, for example, a WAN (Wide Area Network), which is a global public communication network such as the Internet. The network (N) may also include, for example, a telephone communication network such as a mobile phone, or a wireless communication network such as Wi-Fi (registered trademark).

In addition, in FIG. 2, the solid lines connecting each block of the power supply system 1 indicate power lines, and the dashed lines connecting each block indicate communication lines (including wireless communication). It is assumed that the power supply system 1 according to this application example is applied to an apartment building 1a. In this case, the apartment building 1a is an example of a complex facility including multiple power supply destinations. It is also assumed that the system is equipped with distributed power sources such as solar cells, wind power generators, so-called V2H (Vehicle to Home) power sources, and storage batteries.

The management device 2 then calculates the electricity fee to be charged to each resident based on the amount of electricity measured by the parent smart meter 4 and smart meters 11a, 11b, 11c, ... 18 (described later). The management device 2 then notifies the electricity fee, for example, to the resident's smartphone 2a via the network (N).

In FIG. 2, the power supply system 1 is electrically connected to the power grid 3. When the power supplied by the distributed power source is less than the power consumption of the multiple power supply destinations and there is a power shortage, it is possible to purchase power from the power grid 3, for example. When the power supplied by the distributed power source is more than the power consumption of the multiple power supply destinations, it is possible to sell the surplus power to another power grid (not shown), for example. The power exchanged with the power grid 3 is measured by the parent smart meter 4. The power grid 3 may be a so-called retail electricity supplier or a general electricity supplier. A cubicle-type high-voltage power receiving device 20 capable of receiving high-voltage power is installed between the power grid 3 and the parent smart meter 4. If the total power received by the apartment building is low voltage, this device is not necessary.

In addition, the management device 2 is configured to be able to communicate with the system in the apartment building 1a outside the apartment building 1a. In this application example, the system in the apartment building 1a and the management device 2 are able to communicate wirelessly via the LTE router 6. More specifically, the management device 2 may be a server device provided on the cloud by a management company that is the operator of the power supply system 1. However, the management device 2 may be connected by wired communication and may not necessarily be provided on the cloud as long as it is capable of transmitting and receiving information between the system in the apartment building 1a in the power supply system 1. Note that the management device 2 has a function of calculating the electricity fee to be charged to each power supply destination and the refund fee to be refunded from the power used in the apartment building 1a, as described below.

In addition, the multiple power supply destinations of the power supply system 1 are assumed to be private areas (120a, 120b, 120c, etc.). These private areas (120a, 120b, 120c, etc.) are, for example, each room (hereinafter also referred to as the occupants) in the apartment building 1a. In addition, the loads 12a, 12b, 12c, etc. in the private areas (120a, 120b, 120c, etc.) are electrical appliances, etc. in each room in the apartment building 1a.

As shown in FIG. 2, the private area 120a is equipped with a storage battery 121a and a storage battery power conditioner 122a. In this way, each resident can independently install power storage equipment within their own private area.

In addition to the private areas (120a, 120b, 120c, etc.), the apartment building 1a also has a common area 13. The common area 13 is a shared portion of the apartment building 1a, and the loads of the common area 13 may be, for example, lights 13a in the hallway or entrance, or a specific load distribution board 13b that can automatically supply power to pre-connected electrical appliances during a power outage. The private areas (120a, 120b, 120c, etc.) and the common area 13 are each equipped with smart meters 11a, 11b, 11c, ..., 11d, making it possible to measure the power supplied to the private areas (120a, 120b, 120c, etc.) and the common area 13.

The smart meters 11a, 11b, 11c... provided for the exclusive use units 120a, 120b, 120c... are configured to be able to measure not only the power supplied from the first distribution board 9 to the exclusive use units 120a, 120b, 120c..., but also the power transmitted from the exclusive use units 120a, 120b, 120c... to the first distribution board 9. This makes it possible for the occupant of the exclusive use unit 120a to use their own installed storage battery 121a (storage battery power conditioner 122a) in conjunction with the power supply system 1.

The power supply system 1 is also equipped with a storage battery 14 and a solar cell 15 as distributed power sources. The storage battery 14 is connected to a storage battery power conditioner 16, which includes a bidirectional DC/DC converter that raises and lowers the charging and discharging voltage, and a DC/AC converter that converts the voltage related to charging and discharging the storage battery from DC to AC. The power output from the storage battery power conditioner 16 is measured by a smart meter 19a. On the other hand, the solar cell 15 is connected to a solar cell power conditioner 17, which includes a DC/DC converter that adjusts the power generation voltage of the solar cell 15, a control circuit for performing MPPT control using the hill climbing method, and a DC/AC converter that converts the output voltage of the solar cell 15 from DC to AC. The power output from the solar cell power conditioner 17 is measured by a smart meter 19b. The solar cell power conditioner 17 is also electrically connected to the storage battery power conditioner 16, and it is possible to directly charge the storage battery 14 with the power generated by the solar cell 15. In this embodiment, a distributed power source in which the storage battery 14 and the solar cell 15 are integrated may also be used.

In the power supply system 1 shown in FIG. 2 , the storage battery power conditioner 16 and the solar cell power conditioner 17 are connected to a second distribution board 10 for distributed power sources. The second distribution board 10 is then connected to a first distribution board 9 that distributes power to each of the exclusive areas (120a, 120b, 120c, ...) and the common area 13. The first distribution board 9 is connected to the power system 3 via the parent smart meter 4. The first distribution board 9 also distributes power to each of the exclusive areas (120a, 120b, 120c, ...) and the common area 13 (
The power cord is plugged into a power outlet.

As a result, the power generated by the solar cells 15 and the power discharged from the storage battery 14 can be supplied to each private area (120a, 120b, 120c, etc.) and the common area 13. At that time, if the power consumed by the loads in each private area (120a, 120b, 120c, etc.) and the common area 13 is greater than the power supplied by the storage battery 14 and the distributed power source of the solar cells 15, the shortage is replenished by purchasing power from the power grid 3. Also, if the power consumed by the loads in each private area (120a, 120b, 120c, etc.) and the common area 13 is less than the power generated by the solar cells 15, it is possible to sell the surplus power that exceeds the charging capacity of the storage battery 14.

The input/output power of the exclusive section (120a, 120b, 120c...) and the common section 13 measured by the smart meters 11a, 11b, 11c,..., 11d, the input/output power information of the storage battery power conditioner 16 measured by the smart meter 19a, and the output power information from the solar battery power conditioner 17 to the second distribution board 10 measured by the smart meter 19b are provided to the storage battery controller 5 via the gateway 8c and the hub 7. The amount of electricity purchased from the power grid 3 measured by the parent smart meter 4 is also provided to the storage battery controller 5. The state of MPPT control in the solar battery power conditioner 17, information such as the terminal current value and voltage value of the solar battery 15, and information such as the amount of electricity stored in the storage battery 14 and the storage battery 121a are also provided to the storage battery controller 5 via the gateways 8a, 8b, 8d, and the hub 7.

The battery controller 5 controls the input/output power of the battery power conditioner 16 and the amount of electricity purchased from the power grid 3 based on the power consumption in each private area (120a, 120b, 120c, etc.) and the common area 13, the amount of electricity generated by the solar cells 15 and the amount of electricity stored in the battery 14, the power management policy of the bulk power receiving business operator, the electricity trading market price, etc.

Similarly, information on the input/output power of the exclusive section (120a, 120b, 120c, ...) and the common section 13 measured by the smart meters 11a, 11b, 11c, ... 18, the input/output power of the storage battery power conditioner 16 measured by the smart meter 19a, and the output power from the solar battery power conditioner 17 to the second distribution board 10 measured by the smart meter 19b are also provided to the management device 2 via the gateway 8c, the hub 7, and the LTE router 6. Similarly, the amount of power purchased from the power grid 3 measured by the parent smart meter 4 is also provided to the management device 2. Furthermore, information on the state of MPPT control in the solar battery power conditioner 17, the terminal current value, voltage value, etc. of the solar battery 15, the amount of power stored in the storage battery 14 and the storage battery 121a, etc. are also provided to the management device 2 via the gateways 8a, 8b, 8d, the hub 7, and the LTE router 6. In addition, in the embodiment, information on the amount of electricity purchased from the power grid 3a may be obtained from billing information from the power company, rather than being provided to the management device 2 from the smart meter.

(Functional configuration of management device 2)
FIG. 3 shows an example of an outline of the functional configuration of the management device 2, the smartphone 2a, and the server 2b of the bulk power receiving business operator. The management device 2 is a computer having a processor such as a CPU (Central Processing Unit), a main storage device such as a RAM or a ROM, and an auxiliary storage device such as a hard disk drive. The management device 2 also has a communication module capable of communicating with an external device via a network. The auxiliary storage device stores an operating system (OS), various programs, various tables, and the like. The programs stored in the auxiliary storage device are loaded into the working area of the main storage device and executed, and each component is controlled through the execution of the programs, thereby realizing each function that meets a predetermined purpose as described below. In the following, the main storage device and the auxiliary storage device are simply referred to as storage devices.

The management device 2 includes a communication unit 201. The communication unit 201 includes a communication module. The communication unit 201 controls communication of information with external devices via a network (N).

The management device 2 also includes a target calculation unit 202 (an example of a "target power calculation unit" in the present disclosure). The target calculation unit 202 sets a reduction target for power consumption. That is, the target calculation unit 202 sets the reduction target for the relevant month to be reduced as a ratio to the power consumption in the relevant month in the past. The power consumption in the relevant month in the past includes the total power consumption in the apartment complex 1a. Alternatively, the power consumption in the relevant month in the past includes the power values of the common area 13 and the private areas (120a, 120b, 120c, ...) measured in the relevant month in the past by smart meters 11a, 11b, 11c, ... 11d (an example of a "power meter" in the present disclosure). Alternatively, the target calculation unit 202 may set the reduction target for the relevant month based on the electricity rate plan of the apartment complex 1a.

The target calculation unit 202 also determines whether to allocate the total power consumption reduction target equally to each dedicated section (120a, 120b, 120c, ...) or to each dedicated section according to the past power consumption of each dedicated section (120a, 120b, 120c, ...).

In addition, if the past power consumption of the shared unit 13 or the private unit (120a, 120b, 120c, ...) in the relevant month is less than a predetermined threshold, the target calculation unit 202 excludes the relevant shared unit 13 or private unit (120a, 120b, 120c, ...) from the power consumption reduction target. By making this exclusion setting, it is possible to avoid unnecessary power reduction requests for a specific space whose power consumption does not meet a certain level.

This method of setting power consumption reduction targets will hereafter be referred to as reduction rules.

The management device 2 also includes a rebate amount calculation unit 203 (an example of the "rebate amount calculation unit" of the present disclosure). The rebate amount calculation unit 203 sets the rebate amount to be rebated to the resident based on the actual power consumption. In other words, the rebate amount calculation unit 203 sets the percentage of the power consumption reduction amount (the amount of power purchased by the bulk power receiving business operator equivalent to the reduced power consumption) achieved in the common area 13 and the private areas (120a, 120b, 120c, ...) to be rebated to each resident.

The rebate amount calculation unit 203 also determines whether to allocate the entire rebate amount equally to the exclusive parts (120a, 120b, 120c, ...) or to each exclusive part according to the power consumption reduction performance of each exclusive part (120a, 120b, 120c, ...).

In addition, the rebate calculation unit 203 sets whether or not to charge an additional amount to the electricity bill to cover the shortfall if the reduction in power consumption in the common area 13 and the private areas (120a, 120b, 120c, ...) has not reached the target.

This method of setting the rebate amount will hereafter be referred to as the rebate rule.

The management device 2 also includes a guidance unit 204 (an example of the "notification unit" of the present disclosure). The guidance unit 204 sets the power consumption deletion request to be notified to the resident. In other words, the guidance unit 204 determines the means of communication for the deletion request from among email, mail, and telephone. The guidance unit 204 also sets the date and time for notifying the resident of the deletion request.

Note that such settings for requests to reduce power consumption will hereafter be referred to as reduction request rules.

The guidance unit 204 also urges residents who the monitoring unit 205 has determined to be unlikely to achieve their power consumption reduction target (described below) to reduce their power consumption. The guidance unit 204 then determines the means of contact for the urge from among email, postal mail, and telephone. The communication means may be used in combination.

The information unit 204 also informs each resident of the charges calculated by the charge billing unit 206 (described later). The information unit 204 determines the means of contacting each resident from among email, mail, and telephone. The means of contact may be used in combination.

The management device 2 also includes a monitoring unit 205 (an example of a "determination unit" of the present disclosure). The monitoring unit 205 monitors whether there is a resident who is unlikely to achieve the power consumption reduction target. That is, the monitoring unit 205 determines whether the power consumption in each private unit (120a, 120b, 120c, ...) is below a predetermined threshold. The private unit that is determined to be below the predetermined threshold is then targeted for a power consumption reduction urging. The monitoring unit 205 sets the date for this determination from within the month of the deletion target.

Note that these settings for reminders to reduce power consumption are hereafter referred to as reduction reminder rules.

The management device 2 also includes a billing unit 206 (an example of the "electricity charge calculation unit" of the present disclosure). The billing unit 206 calculates an electric power charge according to the power consumption in each private unit (120a, 120b, 120c, ...). The billing unit 206 then adds or subtracts the refund amount calculated by the refund amount calculation unit 203 from the electric power charge. The billing unit 206 then bills the electric power charge, with the refund amount added or subtracted, to the amount billed to the resident.

The management device 2 also includes a memory unit 207. The memory unit 207 includes a storage device. The memory unit 207 stores the power consumption reduction rules (each private section (120a, 120b, 120c, ...)) set in the target calculation unit 202 in the storage device. The memory unit 207 also stores data of the power consumption reduction target (the entire apartment building 1a, the common section 13, and each private section (120a, 120b, 120c, ...)) set in the target calculation unit 202 in the storage device. The memory unit 207 also stores data of past power consumption (the entire apartment building 1a, the common section 13, and each private section (120a, 120b, 120c, ...)) used when the power consumption reduction target is set in the storage device. The memory unit 207 also stores data on the power consumption for the month to be reduced (for the entire apartment complex 1a, the common area 13, and each private area (120a, 120b, 120c, etc.)) in the memory device. The memory unit 207 also stores data on the electricity rate plan (for the entire apartment complex 1a, the common area 13, and each private area (120a, 120b, 120c, etc.)) in the memory device.

The memory unit 207 also stores the actual power consumption reduction results for the relevant month (the entire apartment complex 1a, the common area 13, and each private area (120a, 120b, 120c, ...)) in the memory device. The memory unit 207 also stores the rebate rules for deriving the rebate amount to each resident (the entire apartment complex 1a, the common area 13, and each private area (120a, 120b, 120c, ...)) in the memory device. The memory unit 207 also stores the rebate amount data calculated by the rebate amount calculation unit 203 (the entire apartment complex 1a, the common area 13, and each private area (120a, 120b, 120c, ...)) in the memory device.

The storage unit 207 also stores the reduction request rule and reduction reminder rule in the storage device. The storage unit 207 also stores the contact information of the resident, such as email address, telephone number, address, etc. in the storage device. By storing the contact information of the resident in the storage device in this way, the contact information of the resident can be used to notify the resident of a request to reduce power consumption, a reminder to reduce power consumption, or a power bill, as described below.

The memory unit 207 also stores in the storage device a predetermined threshold value that is used by the monitoring unit 205 when determining whether the power consumption in each dedicated section (120a, 120b, 120c, ...) during the course of the month will reach the reduction target.

(Functional configuration of smartphone 2a)
The smartphone 2a is a portable terminal equipped with a processor such as a CPU, a storage device such as a RAM and a ROM, a camera, a touch panel display, and a communication module. The storage device stores an operating system (OS), various programs, various tables, etc., and the programs stored therein are loaded into a working area of a main storage device and executed. Each component is controlled through the execution of the programs, thereby realizing each function that matches a specific purpose, as described below.

The smartphone 2a includes a communication unit 221. The communication unit 221 includes a communication module. The communication unit 221 controls communication of information with external devices via the network (N).

The smartphone 2a also includes a reception unit 222. The reception unit 222 includes a touch panel display. The reception unit 222 receives input by operating the touch panel display. The reception unit 222 then executes various processes in response to the received input.

The smartphone 2a also includes a display unit 223. The display unit 223 includes a touch panel display. The display unit 223 displays information on the touch panel display.

(Functional configuration of business operator's server 2b)
The server 2b is a computer having a processor such as a CPU (Central Processing Unit), a main storage device such as a RAM or ROM, and an auxiliary storage device such as a hard disk drive, just like the management device 2. The management device 2 also has a communication module capable of communicating with external devices via a network. The auxiliary storage device stores an operating system (OS), various programs, various tables, and the like. The programs stored in the auxiliary storage device are loaded into the working area of the main storage device and executed, and each component is controlled through the execution of the programs, thereby realizing each function that meets a specific purpose, as described below.

The server 2b includes a communication unit 241. The communication unit 241 includes a communication module. The communication unit 241 controls communication of information with external devices via the network (N).

The server 2b also includes a storage unit 242. The storage unit 242 includes a storage device.

The server 2b also includes a reception unit 243. The reception unit 243 includes an input device, such as a keyboard, that is connected to the server 2b. The reception unit 243 receives input operations from the keyboard or the like. The reception unit 243 then executes various processes in response to the received input.

The server 2b also includes a display unit 244. The display unit 244 includes a display connected to the server 2b. The display unit 244 displays information on the display connected to the server 2b.

4 illustrates an outline of a flowchart of the initial setting executed by the management device 2. In the following, the common area 13 will be simply referred to as the common area. Also, the private areas (120a, 120b, 120c, . . . ) will be Room 101, Room 102, Room 201, and Room 202.

(Step S11)
In step S11, the target calculation unit 202 sets a reduction target for power consumption. FIG. 5 illustrates an example of a reduction target for power consumption set by the target calculation unit 202. As shown in FIG. 5, the target calculation unit 202 sets the reduction target for the month to be reduced in power consumption to, for example, 10% of the power consumption in the corresponding month in the past (for example, the previous year). That is, for example, in the case of Room 101, the power consumption in the corresponding month in the previous year was 300 kWh, so the reduction target is set to 30 kWh. In addition, such a reduction target is set for, for example, the common area and each room (an example of "calculating a reduction target for power consumption for each specified space" in the present disclosure). Note that, if the power consumption in the corresponding month in the past is 100 kWh or less, the target calculation unit 202 does not target the corresponding space for deletion. That is, in the example of FIG. 5, the common area is not targeted for reduction. Note that step S11 is an example of the "target power calculation step" in the present disclosure.

The memory unit 207 also stores the reduction rules (for each room) and power consumption reduction targets (for the entire apartment complex 1a, common areas, and each room) set as described above in a storage device.

In Figure 5, the electricity bill for the past month is shown for reference, assuming that the bulk electricity supplier's electricity purchase price is 30 yen/kWh. The electricity bill corresponding to the reduction target is also shown.

(Step S12)
In step S12, the rebate calculation unit 203 sets the rebate rule. The rebate calculation unit 203 sets the rebate rate to, for example, 80% for the reduction amount of power consumption in the relevant month. The rebate calculation unit 203 also distributes the total amount of rebate determined in this way to each room according to the actual degree of power reduction in each room. The memory unit 207 also stores the rebate rule set in this way in the memory device.

(Step S13)
In step S13, the information unit 204 sets a rule for requesting deletion of power consumption. That is, the information unit 204 determines the means of communication for the deletion request to be, for example, email. The information unit 204 then sets the sending date of the email to be sent to each resident to, for example, the month before the relevant month.

(Step S14)
In step S14, the monitoring unit 205 sets a reduction prompting rule for prompting a resident who is unlikely to achieve the power consumption reduction target to reduce power consumption. That is, the monitoring unit 205 sets that the reduction prompt is to be performed, for example, on the 20th of the relevant month. The monitoring unit 205 also determines whether the daily achievement rate of the power consumption reduction up to the 20th of the relevant month is 100%. Then, if the daily achievement rate of the power consumption reduction is less than 100%, it decides to perform the reduction prompt. The storage unit 207 also stores in the storage device that the threshold for the reduction prompt is 100% of the daily achievement rate. Note that the daily achievement rate of the power consumption reduction up to the 20th of the relevant month being 100% is an example of the "threshold for achieving the reduction target" of the present disclosure.

Figure 6 also illustrates an example of an outline of a flowchart for billing electricity charges that is implemented by the management device 2 after the initial settings have been completed as shown in Figure 5, the resident's smartphone 2a, and the operator's server 2b.

(Step S1)
In step S1, the target calculation unit 202 reads out from the storage device the power consumption reduction rule previously set in step S11 described above. The read-out reduction target is then transmitted to the server 2b of the bulk power receiving company via the communication unit 221. In the server 2b, the reduction rule for each room is received via the communication unit 241, and is displayed by the display unit 244 on a display connected to the server 2b.

The bulk electricity receiving business operator then checks the reduction rules shown on the display. If the business operator recognizes that there is a problem with the reduction rules, the business operator operates an input device such as a keyboard to input a request to change the reduction rules. The reception unit 243 then transmits a request to change the reduction rules to the management device 2 via the communication unit 241.

In the management device 2, a request to change the reduction rules is received via the communication unit 221. In such a case, the target calculation unit 202 changes the reduction rules and sets a reduction target. Then, the new reduction rules for each room are transmitted to the bulk power receiving business operator's server 2b via the communication unit 221.

If there is no change in the reduction rules from server 2b, the target calculation unit 202 determines the reduction target to be the preset power consumption reduction target (see FIG. 5). In addition, in server 2b, the received reduction rules for each room are stored in a storage device.

(Step S2)
In step S2, the information unit 204 notifies the resident of the request to delete the power consumption. FIG. 7 is an example of the text of the deletion request. As shown in FIG. 7, the text includes the reduction target data determined in step S1. The text also includes the data of the power consumption and electricity charges for the past month stored in the storage device. The information unit 204 then sends an email of the reduction request to the smartphone 2a of the resident who is the target of the reduction via the communication unit 201, in accordance with the notification rule for the reduction request set in step S13. The text of the deletion request is automatically generated by the information unit 204.

(Step S3)
In step S3, the reception unit 222 of the smartphone 2a receives operations on the touch panel display of the smartphone 2a of the resident for the month to be deleted. Then, data on the power consumption reduction target and reduction status for the month is obtained from the management device 2 via the communication unit 221. Then, the display unit 223 displays the obtained data on the touch panel display.

Figure 8 is an example of data on the power consumption reduction status displayed on the touch panel display of the smartphone 2a. As shown in Figure 8, the displayed data shows the power consumption reduction target and the current reduction performance. The current power consumption reduction performance is sequentially stored in the storage device by the memory unit 207 in the management device 2.

(Step S4)
In step S4, in the month that is the target of reduction, in accordance with the power consumption reduction prompting rules set in step S14, the monitoring unit 205 determines whether the degree of power reduction in each room on the 20th of the month is less than 100% as a daily achievement rate.
If there is a room in which the daily rate of achievement of the degree of power reduction is less than 100%, the notification unit 204 generates a message urging the corresponding occupant to reduce power consumption.

Figure 9 is an example of a reminder message. As shown in Figure 9, the message contains the reduction target data determined in step S1. The message also contains actual data on power consumption up to the relevant day that is stored in the storage device. The message also describes the pace at which the target can be achieved in the remaining number of days. The information unit 204 automatically generates such a message. The information unit 204 then transmits a reminder email for reduction via the communication unit 201 to the smartphone 2a of the resident who is the subject of the reminder.

(Step S5)
In step S5, the rebate calculation unit 203 calculates the rebate amount according to the rebate rule set in step S12 for the month following the month of the reduction target. FIG. 10 illustrates a specific example of the rebate amount. As shown in FIG. 10, for example, if the total power consumption in the month is 1320 kWh, the total power consumption in the past month is 1450 kWh, so 130 kWh of power has been reduced. Therefore, if the power purchase amount of the business operator is, for example, 25 yen/kWh, the power purchase amount of the business operator has been reduced by 130 x 25 = 3250 yen compared to the past month. Since the rebate rate is set to 80%, the total rebate amount is 3250 x 0.8 = 2600 yen. Then, this total rebate amount of 2600 yen is apportioned to each room according to the amount of power reduction of each room that is the target of power reduction. For example, in room 101, the total reduction amount of each room is 140 kWh, but 40 kWh has been reduced. Therefore, the proportion of Room 101 in the total reduction amount is approximately 28.6%. Therefore, 743 yen, which is 28.6% of the total refund amount of 2,600 yen, will be returned to the resident of Room 101. Note that step S5 is an example of the "refund amount calculation step" of the present disclosure.

The memory unit 207 also stores data on the power consumption for the relevant month (overall apartment complex 1a, common areas, each room), the actual reduction (overall apartment complex 1a, common areas, each room), and the refund amount (overall apartment complex 1a, common areas, each room) in the memory unit. The refund amount calculation unit 203 also transmits the actual reduction (overall apartment complex 1a, common areas, each room) for the relevant month to the operator's server 2b via the communication unit 201. The operator's server 2b receives the data on the actual reduction (overall apartment complex 1a, common areas, each room) for the relevant month via the communication unit 241, and the memory unit 242 stores the actual reduction data in the memory unit.

(Step S6)
In step S6, the billing unit 206 performs a process of subtracting the rebate amount calculated in step S5 from the electricity bill for the month. Note that the normal charge listed in the actual results for the month in Fig. 10 is the amount of electricity usage multiplied by the amount of electricity sold by the company (e.g., 30 yen/kWh). If the rebate amount is not taken into account, such a charge would be billed to the resident.

The rightmost column in FIG. 10 shows an example of the electricity charge for the relevant month with the refund amount subtracted from it. This process is executed in the month following the relevant month. The information unit 204 then transmits the electricity charge with the refund amount subtracted as the billed amount to the smartphone 2a of each resident via the communication unit 201. The smartphone 2a receives the billed amount data via the communication unit 221. The display unit 223 then displays the received billed amount on the touch panel display. In this way, each resident can check the billed amount for the relevant month. Step S6 is an example of the "electricity charge calculation step" of the present disclosure.

[Action and Effects]
According to the above-described power fee billing system 100, the reduction target for each room for the month is set to 10% of the power consumption of the room in the past month. This reduction target is an achievable and appropriate reduction target. Therefore, each resident's motivation to save electricity is improved.

Furthermore, according to the above-described power billing system 100, as shown in FIG. 10, a rebate can be received according to the ratio of the reduction amount for each room to the total reduction amount. Therefore, each resident can receive a rebate according to the amount of power reduction, and each resident's motivation to save power increases. Therefore, according to the above-described power billing system 100, power saving is promoted. Furthermore, as the residents work on saving power, their understanding of the environment deepens and their awareness improves. Furthermore, the collective power receiving business for the apartment complex can reduce the total amount of power purchased from 1450 kWh to 1320 kWh, as shown in FIG. 10. Therefore, the amount of power purchased can be reduced from the past by (1450-1320) kWh x 25 yen/kWh = 3250 yen.

In addition, according to the electricity billing system 100 as described above, as shown in step S3 of FIG. 6, the resident can check the amount of electricity actually consumed on the smartphone 2a. Therefore, the resident can understand the amount of electricity that is short of the reduction target. This prevents the reduction target from being reached. This makes it more likely that energy conservation will be promoted.

In addition, according to the electricity billing system 100 described above, as shown in step S4 of FIG. 6, a reduction urging is sent to residents who are in danger of not achieving their reduction target in the middle of the month (the 20th). This prevents the power consumption reduction target from being missed. This makes it more likely that energy conservation will be promoted.

§3 Modifications [First Modification]
FIG. 11 illustrates an outline of the rebate rule according to the first modified example. In the rebate rule according to the first modified example, the power reduction target and the actual reduction performance of the common area and each room are the same as those in the embodiment (see FIG. 5 and FIG. 10). Therefore, the total rebate amount is 2600 yen, the same as in the embodiment.

As shown in FIG. 11, in the refund rule for the first modified example, the refund amount is apportioned according to the achievement rate of the reduction target. For example, the reduction target for room 101 is 30 kWh, while the actual reduction is 40 kWh. Therefore, the achievement rate is 133%. Therefore, room 101 accounts for approximately 32.8% of the overall achievement rate of 405%. Therefore, of the total refund amount of 2,600 yen, 856 yen, or 32.8%, is refunded to the occupant of room 101.

Meanwhile, the electricity reduction for Room 202 was 40 kWh, the same as Room 101. However, because the reduction target was set at 40 kWh, the achievement rate was 100%. Therefore, Room 202 accounts for approximately 24.7% of the overall achievement rate of 405%. Therefore, of the total refund amount of 2,600 yen, 24.7%, or 642 yen, will be refunded to the resident of Room 202.

[Action and Effects]
According to the rebate rule of the first modification, when the power reduction amount is the same for room 101 and room 202, 40 kWh, room 101, which has a higher reduction achievement rate, will receive more rebate. Therefore, the resident who has contributed more to the reduction target can receive more rebate. This can further increase the resident's motivation to save electricity. This makes it more certain that energy saving will be promoted.

[Second Modification]
FIG. 12 illustrates an outline of the rebate rule according to the second modified example. In the rebate rule according to the second modified example, the power reduction target of the common area and each room is the same as that of the embodiment (see FIG. 5). However, the rebate rule according to the second modified example is applied when the power consumption of some rooms (Room 201) exceeds the reduction target, for example, as shown in FIG. 12.

In other words, in the case shown in Figure 12, for example, the total power consumption in the relevant month is 1400 kWh, and the total power consumption in the relevant month in the past is 1450 kWh, so 50 kWh of power has been reduced. Therefore, if the power purchase amount of the business operator is 25 yen/kWh, for example, the power purchase amount of the business operator has been reduced by 50 x 25 = 1250 yen compared to the relevant month in the past. And because the rebate rate is set to 80%, the total rebate amount is 1250 x 0.8 = 1000 yen.

In this case, even though Room 201's past power consumption for that month was 350 kWh and the reduction target was 35 kWh, if the actual power consumption is 380 kWh, not only has it not met the reduction target, it has actually exceeded the past power consumption for that month. The excess power consumption (-30 kWh) over Room 201's past power consumption for that month is equivalent to 50% of the total reduced power consumption of 60 kWh for the common areas and each room. Therefore, the total refund amount of 1,000 yen will be increased by 50% to the regular rate (11,400 yen), or 50% of the normal rate. In other words, the amount billed to the occupant of Room 201 will be 11,900 yen.

In addition, since the other rooms have achieved their reduction targets, the refund amount for each room will be the total refund amount of 1,000 yen divided proportionately based on the actual reductions. In other words, for example, the total reduction amount for each room is 60 kWh, while the reduction amount for Room 101 is 40 kWh. Therefore, the reduction amount for Room 101 accounts for approximately 66.7% of the total reduction amount. Therefore, 667 yen, which is 66.7% of the total refund amount of 1,000 yen, will be refunded to the resident of Room 101.

In the second variant, the electricity bill is increased as a penalty if the power consumption exceeds the previous month's power consumption, but the electricity bill may be increased if the power consumption does not exceed the previous month's power consumption but the reduction target has not been achieved.

[Action and Effects]
According to the rebate rule of the second modification, if the reduction target is not achieved and the power consumption exceeds the amount of the previous month, the resident is charged a penalty. This prevents the reduction target from being achieved and prevents the power consumption from increasing compared to the previous month. This promotes power saving.

[Third Modification]
Fig. 13 illustrates an outline of the rebate rule according to the third modified example. In the rebate rule according to the third modified example, the power reduction target and the actual power consumption of the common area and each room are the same as those of the second modified example (see Fig. 12).

In the rebate rule for the third modification, the excess amount is not charged to room 201, which exceeded the power consumption of the past month. In other words, the total rebate amount of 1000 yen is apportioned among the rooms other than room 201 according to the reduction results (see FIG. 13). In other words, for example, the reduction amount of room 101 is 40 kWh, while the total reduction amount of rooms 101, 102, and 202 excluding room 201 is 90 kWh. Therefore, the ratio of the reduction amount of room 101 to the total reduction amount of rooms 101, 102, and 202 is about 44.4%. Therefore, 444 yen, which is 44.4% of the total rebate amount of 1000 yen, becomes the rebate amount for the occupant of room 101. Therefore, 7156 yen, which is the normal fee (7800 yen) minus 444 yen, is charged to the occupant of room 101.

On the other hand, Room 201, which exceeded its power consumption for the past month, will be charged the regular electricity rate (11,400 yen) without any increase for the excess.

In the third variant, if the power consumption exceeds the amount consumed in the previous month, the excess amount is not charged. However, if the power consumption does not exceed the amount consumed in the previous month but the reduction target is not achieved, the electricity fee may be charged without increasing the amount of the shortfall.

[Action and Effects]
According to the rebate rule of the third modification, even if the power consumption exceeds the power consumption of the previous month, the electricity fee charged to the resident will not be increased. Therefore, the economic and mental burden imposed on the resident for saving electricity is reduced.

[Other Modifications]
Some of the functions of the management device 2 may be executed by another server to form the electricity billing system 100. Furthermore, the reduction urging by the monitoring unit 205 and the notification unit 204 may not be executed.

The rebate rules of the rebate calculation unit 203 are not limited to the above embodiment, and the rebate amount may be determined using at least one of the past electricity usage records of each resident, the usage records of the entire apartment complex 1a, the electricity rate plan of the apartment complex 1a, the rate plan for the residents, the electricity rate records of the entire apartment complex 1a, the electricity usage records of each resident, and the reduction target amount. The reduction target is not limited to each room, and may be set for each building where multiple rooms are gathered.

The embodiments and variations disclosed above can be combined with each other.

In the following, the components of the present invention will be described with reference to the reference numerals in the drawings in order to make it possible to compare the components of the present invention with the configurations of the embodiments.
<Appendix 1>
An electricity billing system (100) for an apartment building (1a), comprising:
A target power calculation unit (202) that calculates a power consumption reduction target for each predetermined space in the apartment building (1a);
a rebate amount calculation unit (203) that calculates a rebate amount to be given to the occupants of the apartment building (1a) based on the reduction target calculated by the target power calculation unit (202) and the actual power consumption;
and an electricity charge calculation unit (204) that calculates an electricity charge to be charged to the resident based on the power consumption actually consumed and the rebate amount calculated by the rebate amount calculation unit (203).
An electricity billing system (100).
<Appendix 2>
The power rate calculation unit (204) determines the rebate amount according to the degree of contribution to the actual reduction in power consumption.
The electricity billing system (100) of claim 1.
<Appendix 3>
When the actually consumed power does not reach the reduction target, the power charge calculation unit (204) adds a charge corresponding to the shortfall to the power charge corresponding to the actually consumed power.
An electricity billing system (100) according to claim 1 or 2.
<Appendix 4>
When the actually consumed power does not reach the reduction target, the power charge calculation unit (204) calculates the power charge without adding a charge corresponding to the shortfall to the power charge corresponding to the actually consumed power.
An electricity billing system (100) according to claim 1 or 2.
<Appendix 5>
The target power calculation unit (202) calculates the reduction target based on at least one of the past power consumption of the entire apartment building (1a), the past power consumption acquired from the power meters (11a, 11b, 11c, ... 18) installed in the common areas and the private areas of the residents in the apartment building (1a), and the electricity rate plan of the apartment building (1a).
An electricity billing system (100) according to any one of claims 1 to 4.
<Appendix 6>
A display unit (223) that displays the reduction target and the actual power consumption is further provided.
An electricity billing system (100) according to any one of claims 1 to 5.
<Appendix 7>
a determination unit (205) that determines whether the actually consumed power is lower than a threshold value related to achievement of the reduction target;
and a notification unit (204) that notifies the occupant that the determination unit (205) has determined that the actual power consumption is lower than a threshold value related to achievement of the reduction target.
An electricity billing system (100) according to any one of claims 1 to 6.
<Appendix 8>
An electricity billing program for an apartment building (1a), comprising:
A target power calculation step (S11) of calculating a power consumption reduction target for each predetermined space in the apartment building (1a);
a rebate amount calculation step (S5) of calculating a rebate amount to be given to the residents of the apartment building (1a) based on the reduction target calculated in the target power calculation step (S11) and the actual power consumption;
and (S6) calculating an electricity charge to be charged to the resident based on the power consumption actually consumed and the rebate amount calculated in the rebate amount calculation step (S5).
Electricity billing program.
<Appendix 9>
An electricity billing device (2) for an apartment building (1a), comprising:
A target power calculation unit (202) that calculates a power consumption reduction target for each predetermined space in the apartment building (1a);
a rebate amount calculation unit (203) that calculates a rebate amount to be given to the occupants of the apartment building (1a) based on the reduction target calculated by the target power calculation unit (202) and the actual power consumption;
and an electricity charge calculation unit (204) that calculates an electricity charge to be charged to the resident based on the power consumption actually consumed and the rebate amount calculated by the rebate amount calculation unit (203).
An electricity billing device (2).

1: Power supply system 1a: Apartment house 2: Management device 2a: Smartphone 2b: Server 3: Power system 4: Parent smart meter 5: Storage battery controller 6: LTE router 7: Hub 8: Gateway 9: First distribution board 10: Second distribution board 11: Smart meter 12: Load 13: Common area 13a: Lighting 13b: Specific load distribution board 14: Storage battery 15: Solar cell 16: Storage battery power conditioner 17: Solar cell power conditioner 18: Smart meter 19: Smart meter 20: Cubicle type high voltage receiving device 100: Power management system 201: Communication unit 202: Target calculation unit 203: Refund amount calculation unit 204: Guidance unit 205: Monitoring unit 206: Billing unit 207: Memory unit 221: Communication unit 222: Reception unit 223: Display unit 241 : Communication unit 242 : Storage unit 243 : Reception unit 244 : Display unit

Claims (8)

An electricity billing system for an apartment building managed by a bulk electricity receiving business operator , comprising:
a target power calculation unit that calculates a power consumption reduction target for each predetermined space in the apartment building;
a rebate amount calculation unit that calculates a rebate amount to be provided to a resident of the specified space of the apartment building based on the reduction target calculated by the target power calculation unit and the power consumption actually consumed for each specified space ;
and an electric power rate calculation unit that calculates an electric power rate to be charged to the resident by the bulk electric power receiving business operator based on the electric power consumption actually consumed and the rebate amount calculated by the rebate amount calculation unit ,
The rebate amount calculation unit calculates the rebate amount for each resident of the apartment complex by dividing the rebate amount by at least a portion of the reduction in the amount of the power purchased by the bulk power receiving business operator resulting from the actual reduction in the power consumption, in accordance with the contribution of the actual reduction in the power consumption to the reduction target.
Electricity billing system. When the actually consumed power does not reach the reduction target, the power charge calculation unit adds a charge corresponding to the shortfall to the power charge corresponding to the actually consumed power.
The electricity billing system of claim 1 . When the actually consumed power does not reach the reduction target, the power rate calculation unit calculates the power rate without adding a fee corresponding to the shortfall to the power rate corresponding to the actually consumed power.
The electricity billing system of claim 1 . The target power calculation unit calculates the reduction target based on at least one of the past power consumption of the entire apartment building, the past power consumption obtained from power meters installed in the common areas and the private areas of the apartment building, and the electricity rate plan of the apartment building.
An electricity billing system according to any one of claims 1 to 3 . A display unit that displays the reduction target and the actual power consumption is further provided.
An electricity billing system according to any one of claims 1 to 4 . a determination unit that determines whether the actually consumed power is lower than a threshold value related to achievement of the reduction target;
and a notification unit that notifies the occupant that the determination unit has determined that the actual power consumption is lower than a threshold value related to achievement of the reduction target.
An electricity billing system according to any one of claims 1 to 5 . An electricity billing program for an apartment building managed by a bulk electricity receiving business operator , comprising:
a target power calculation step of calculating a power consumption reduction target for each predetermined space in the apartment building;
a rebate amount calculation step of calculating a rebate amount to be given to a resident of the specified space of the apartment building based on the reduction target calculated in the target power calculation step and the power consumption actually consumed for each specified space ;
an electric power fee calculation step of calculating an electric power fee to be charged to the resident by the bulk electric power receiving business operator based on the actually consumed electric power and the rebate amount calculated in the rebate amount calculation step;
In the rebate amount calculation step, at least a part of the reduction in the amount of the power purchase by the bulk power receiving business operator resulting from the actual reduction in the power consumption is used as a source of the rebate amount, and the source of the rebate amount is apportioned among the residents of the apartment complex in accordance with the degree of contribution of the actual reduction in the power consumption to the reduction target, thereby calculating the individual rebate amounts;
to cause a computer to execute
Electricity billing program. An electricity billing device for an apartment building managed by a bulk electricity receiving business operator , comprising:
a target power calculation unit that calculates a power consumption reduction target for each predetermined space in the apartment building;
a rebate amount calculation unit that calculates a rebate amount to be provided to a resident of the specified space of the apartment building based on the reduction target calculated by the target power calculation unit and the power consumption actually consumed for each specified space ;
and an electric power rate calculation unit that calculates an electric power rate to be charged to the resident by the bulk electric power receiving business operator based on the electric power consumption actually consumed and the rebate amount calculated by the rebate amount calculation unit ,
The rebate amount calculation unit calculates the rebate amount for each resident of the apartment complex by dividing the rebate amount by at least a portion of the reduction in the amount of the power purchased by the bulk power receiving business operator resulting from the actual reduction in the power consumption, in accordance with the contribution of the actual reduction in the power consumption to the reduction target.
Electricity billing device.

Images