JP2004062805A - Electricity metering service system, metering service center, and metering method - Google Patents

Abstract

Provided is a system in which one power meter is installed in a power consumer, power can be purchased from a plurality of power sources, and a procedure such as payment of a fee to each power source is simplified. .
A power metering service system includes a power customer connected to a communication network, an ESP as a power supply source, and a metering service center. The power consumer 30 is provided with a power meter 31 with a communication function. The metering service center 10 includes a power consumption calculation unit 11A, a contract database 10B, a power consumption database 11C, and a charge calculation unit 11D.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a power metering service system, a metering service center, and a method applied when a power consumer receives power supply from a plurality of power suppliers.
[0002]
[Prior art]
Conventionally, power is supplied by a regional monopoly power company, and the electricity rate is calculated by the difference between the integrated value of the integrated meter at the input gate of the electric power customer at the previous meter reading and the meter reading at the current meter reading. Is calculated in accordance with the power consumption and the contents of the prior contract.
[0003]
Such an integrated wattmeter does not have a function of storing the relationship between used power and time, and displays an integrated value of the used electric energy. Therefore, in order to check the amount of electricity used, a meter reader reads the integrated value of the integrating wattmeter at regular intervals to determine the amount of electricity used during the period from the previous meter reading to the current meter reading.
[0004]
In some systems, a wattmeter and a communication line are connected to measure the electricity bill online, but in this case, the offline reading work by the meter reader is made online. Even in this case, what is measured is the integrated value of the amount of electricity used during a certain period such as one month, and the value is merely measured. However, if electricity was supplied by a regional monopoly, that was sufficient.
[0005]
However, in a situation that can be implemented in the near future, and in which electric power consumers can freely select an electric power company, a method of selecting an electric power company that is preferable for the electric power customer, maintaining a balance between the required demand and the supplied electric power amount for the electric power company, and an electric power rate Various issues such as payment methods have been raised.
[0006]
For example, Japanese Patent Application Laid-Open No. 2000-78747 discloses that under a situation where a power customer can freely select a power company, when the power customer contracts with one or more power companies, both the consumption conditions and the charge are satisfied. We propose a system that supports such choice of power companies.
[0007]
Japanese Patent Application Laid-Open No. 2002-44864 discloses a technique for a power company to maintain a balance between a required demand amount and a supply power amount under a situation where a power customer can freely select a power company.
[0008]
[Problems to be solved by the invention]
However, even if a power customer can contract with a preferred power company and the power company can maintain a balance between the required demand and the supplied power, even under the situation where the power customer can freely select the power company. There has not been much consideration regarding the entrance gate at the airport.
[0009]
For example, even if a power customer can contract with a plurality of preferable power companies, if an integrated wattmeter is installed for each power company as an entrance gate, the power customer needs to install a large number of integrated wattmeters. There's a problem.
[0010]
In addition, when power is supplied from a plurality of power companies with one integrated wattmeter, it is feasible to make a purchase contract with one company at regular intervals, but it is possible to obtain time from multiple There is a problem that a single integrated wattmeter cannot cope with the case where the battery is separately purchased.
[0011]
SUMMARY OF THE INVENTION It is an object of the present invention to install one wattmeter in a power consumer, purchase power from a plurality of power sources, and simplify procedures such as payment of fees to each power source. Power metering service system and a metering service center and method.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a power metering service system including a power customer, a power supply source, and a metering service center connected to a communication network,
The power consumer is provided with a power meter that measures the power consumption of the power consumer on a time axis and transmits the measurement data to the metering service center via the communication network,
The metering service center includes a contract database that holds contract data for each of the power consumers, in which the power supply source that receives power supply along a time axis is selected, and the power received through the communication network. A power consumption database that holds measurement data relating to power consumption for each customer; and a power consumption amount and the power demand for each power supply source based on the data stored in the contract database and the power consumption database. A power usage calculator for calculating the power usage for each house; and the power supply source for each power source based on the power usage for each power source and the power usage for each power consumer by the power usage calculation unit. Comprising a charge calculation unit that calculates the electricity bill paid and the billed electricity bill for each power consumer.
Power metering service system.
[0013]
According to the power metering service system of the present invention, only one power meter is provided for the power customer, and the metering service center can reduce the power consumption of the power customer provided with one power meter. It is possible to measure on a time axis, and it is possible to calculate the amount of power consumption for each power supply source and the amount of power consumption for each power consumer based on the measured value and the contract data held in advance, and the calculation result It is possible to calculate the electricity bill paid for each power supply source and the billed electricity bill for each power consumer based on And, for example, through a financial institution connected to the network, it is possible to provide a power consumer who has made a contract to purchase power from a plurality of power sources, to provide a proxy payment service for the power source. Become.
[0014]
Further, in order to achieve the above object, the present invention provides a contract database that holds contract data for each power consumer, in which a power supply source that receives power supply along a time axis is selected,
A power consumption database that holds measurement data related to power consumption along a time axis for each power consumer received via a communication network,
A power usage calculator that calculates the power usage per power supply source and the power usage per power consumer based on the data held in the contract database and the power usage database;
The power consumption calculator calculates an electricity bill to be paid for each power supplier and a billed electricity bill for each power consumer based on the power consumption for each power supplier and the power consumption for each power consumer. Charge calculation department and
A metering service center, comprising:
[0015]
In order to achieve the above object, the present invention provides a metering method executed in a power customer, a power supply source, and a metering service center connected to a communication network,
A measurement step of measuring the power consumption of the power consumer on a time axis and transmitting the measurement data to the metering service center via the communication network,
The power consumption of each power supply source and the power consumption of the power customer based on the contract data and the measurement data of the power customer, which is a power supply source that receives power supply along a time axis. Calculating a power usage amount,
A charge calculating step of calculating a payment electricity rate for each power supply source and a billing electricity rate for the power consumer based on the calculated power usage amount for each power supply source and the power usage amount for the power consumer; and
A metering method, comprising:
[0016]
According to the metering service center and the metering method of the present invention, the power consumption and the power consumption of each power supply source are determined based on the measurement data and the contract data held in advance along the time axis for each power consumer. It is possible to calculate the amount of power consumption for each power consumer, and it is possible to calculate the electricity bill to be paid for each power supply source and the billed electricity bill for each power consumer based on the calculation results. And, for example, through a financial institution connected to the network, it is possible to provide a power consumer who has made a contract to purchase power from a plurality of power sources, to provide a proxy payment service for the power source. Become.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, the power metering service system according to the present embodiment provides a power supply as viewed from power consumers such as a power generation company, a power transmission and distribution company, and a power brokerage company including a regional monopoly power company. In the case of the present embodiment, the power generation, transmission, and transmission of the social infrastructure in the energy service provider ESP 20 that is the source, the power consumer 30 that receives power supply via the power network 50, and the financial institution 40 are performed. Applied to distribution systems and power usage fee collection systems.
[0018]
FIG. 1 illustrates an example in which the power customer 30 receives power supply from three ESPs 20-1, 20-2, and 20-3 along a time axis. Is not limited.
[0019]
The power metering service system of the present embodiment is realized by the metering service center 10 communicating with the ESP 20, the power consumer 30, and the financial institution 40 via communication means.
[0020]
The power consumer 30 may be an individual such as a general household or a business, and refers to a power supply destination viewed from a power supply source, and is provided with one power meter, that is, a power meter 31 with a communication function. I have. The power meter 31 measures the power supplied from the power network 50 consumed by the electric device 33 along the time axis and transmits the measured power to the metering service center 10 via the communication network 60. The power network 50 and the communication network 60 may be physically separate from each other, or may be physically one such as power line carrier.
[0021]
The system according to the present embodiment includes a server 11 provided in a metering service center 10 and clients 21 and 32 which are, for example, Web terminals as information devices provided in an energy service provider ESP 20, an electric power consumer 30 and a financial institution 40. Server and client systems. The information device may be in any form, such as a personal computer, a mobile phone, or a PDA, as long as the information can be transmitted and received via the communication network 60.
[0022]
In the server / client system, communication between the wattmeter 31 and the metering service center 10 is used to collect the power usage status of the power consumer 30, whereas the metering service center 10 and the energy service It is used as communication means other than the collection of the power usage status, such as application and notification at the provider ESP 20, the power consumer 30, and the financial institution 40.
[0023]
Next, the metering service center 10, the ESP 20, the power consumer 30, and the financial institution 40 will be described in detail with reference to FIG. In FIG. 2, illustration of the communication network 60 is omitted.
[0024]
In FIG. 2, the server system 11 of the metering service center 10 includes a power consumption calculator 11A, an ESP contract database 11B, a power consumption database 11C, a charge calculator 11D, and an optimal charge pattern calculator 11E. In addition, services such as an electricity bill payment agent and ESP contract support are provided to the electric power consumer 30, and services such as an electric bill request agent are provided to the ESP 20.
[0025]
The power consumption calculation unit 11A calculates the power consumption of the contract ESP for each hour according to the information in the ESP contract database 11B, adds a time stamp, and names the power consumer, the power supply source, and the power supply. The original power consumption is stored in the power consumption database 11.
[0026]
Based on the measurement data from the wattmeter 31 with a communication function installed in the power consumer 30 and the ESP contract data held in the ESP contract database 11B, the power consumption of each ESP 20 contracted by the power consumer 30 is calculated. Is what you do.
[0027]
As shown in FIG. 3, the ESP contract database 11B has information items such as ESP, electric power consumers, use conditions, electric power quality and the like, and holds data on contract ESP and electric power quality for each electric power consumer. For example, when a certain power consumer 30 receives power supply from three ESPs 20-1, 20-2, and 20-3 along a time axis, for example, as shown in FIG. The first ESP 20-1 is a power supply source before 6:00 and before 18:00 to 24 hours, and the second ESP 20-1 is a power supply source before 6:00 to 11 and before 15:00 to 18:00. If the third ESP 20-3 is used as a power supply source from 11:00 to 15:00 and contracts are made for the respective power qualities and the like, the contract contents are held in the ESP contract database 11B.
[0028]
As shown in FIG. 4, the power consumption database 11C has information items such as an ESP, a power consumer, a use condition, and a power quality, and the power consumption of each ESP 20 to which a time stamp is added by the power consumption calculation unit 11A. It holds data on the amount (power consumption), the power consumption of each power customer 30, the power consumption of each ESP 20 and each power customer 30, and the power quality of each. These data are calculated by the power consumption calculator 11A.
[0029]
The charge calculation unit 11D calculates the electric charge based on the data of the electric power consumption database 11C and the data of the ESP contract database 11B at regular intervals, such as on a monthly basis, and accumulates the electricity charge for each ESP. Make a payment request to.
[0030]
The optimal fare pattern calculation unit 11E performs demand forecasting by using past results for each power customer 30, data of weather forecast, and the like, and obtains data of power products presented from each ESP 20 and power customer 30 Calculates the optimal purchase pattern using the contract conditions presented by the company and concludes a power purchase contract with each ESP 20.
[0031]
Next, each ESP 20 will be described. That is, each ESP 20 has a client 21 and a power supply product database 22. The client 21 is an information terminal such as a Web terminal, and can communicate with the server 11 provided in the metering service center 10. The power supply product database 22 holds product data such as power quality provided by each ESP 20.
[0032]
Next, the power consumer 30 measures the power supplied from the power network 50 consumed by the electric device 33 along the time axis and transmits the measured power to the metering service center 10 via the communication network 60. It has a total 31 and includes a power customer client 32 including a power actual fee display unit 32A and a power fee payment unit 32B.
[0033]
Here, the actual power rate display unit 32A displays data on the actual power rate provided from the metering service center 10, so that the power consumer 30 can grasp the actual power rate. Further, the electricity fee payment unit 32B receives the payment request data from the fee calculation unit 11D of the metering service center 10, and pays the financial institution 40 by transfer or the like.
[0034]
In the financial institution 40, accounts of the metering service center 10, the ESP 20, and the electric power customer 30 are opened in advance, and the metering service center, such as billing and payment between the electric power customer 30 and the metering service center 10, is provided. Billing, payment, and the like between the ESP 20 and the ESP 20 are performed by the server client system or other communication means.
[0035]
Next, a communication operation among the metering service center 10, the ESP 20, the power consumer 30, and the financial institution 40 will be described with reference to the sequences and flowcharts shown in FIGS. By this operation, an electric bill paying agent for the electric power consumer 40 and an electric bill billing agent for the ESP 20 are realized.
[0036]
In FIG. 6, first, the power customer 30 opens an account at the financial institution 40 to be debited by a payment request from the metering service center 10, and the metering service center 10 instructs the financial institution 40 to An account for making a payment request for ESP20 and paying for ESP20 is opened. Each ESP 20 also has an account with the financial institution 40, and the account is paid from the metering service center 10.
[0037]
In addition, the metering service center 10 and the ESP 20 make a contract for an electricity billing agency through a series of procedures of contract application, download, upload, and contract confirmation.
[0038]
Further, the metering service center 10 and the electric power consumer 30 make a contract for the payment of an electric bill through a series of procedures of contract application, download, upload, and contract confirmation.
[0039]
The above-mentioned contract application is performed, for example, on a Web screen by accessing the metering service center 10 from the ESP 20 or the power consumer 30. Downloading means transmitting data (a contract page or the like) relating to a contract from the metering service center 10 to the ESP 20 or the power consumer 30. Further, uploading is to transmit data (a contract page or the like) in which a contract item is drawn by the ESP 20 or the power consumer 30 to the metering service center 10. Further, the contract confirmation is to transmit data relating to the contract from the metering service center 10 to the ESP 20 or the electric power consumer 30 for confirmation.
[0040]
Since the power consumer 30 is provided with the power meter 31 with a communication function, the power consumption data of the power consumer 30 is transmitted to the metering service center 10 periodically.
[0041]
The metering service center 10 that has received the power usage data performs billing and payment between the power customer 30 and the metering service center 10 in steps S1 to S7 shown in FIG. It performs billing and payment with the ESP 20.
[0042]
In FIG. 7, the metering service center 10 receiving the power usage data calculates the power usage along the time axis for each power consumer 30 (step S1). Next, the metering service center 10 calculates the power consumption along the time axis for each ESP 20 (step S2). Then, the power rate for each ESP 20 and each power customer 30 is calculated, and processing such as payment transfer is performed for the ESP 20 (steps S4 to S5), and processing such as payment transfer is performed for the power customer 30. Perform (Steps S6 to S7).
[0043]
As described above, according to the present embodiment, the metering service center 10 determines the power consumption of each ESP 20 based on the measurement data related to the power consumption along the time axis of each power consumer 30 and the contract data stored in advance. It is possible to calculate the amount and the power consumption of each power consumer 30, and it is possible to calculate the electricity bill to be paid for each ESP 20 and the billed electricity bill for each power consumer 30 based on the calculation results. Then, it becomes possible to provide a service for paying a fee to the ESP 20 to the power customer 30 who has made a contract to purchase power from the ESP 20 via the financial institution 40 connected to the communication network 60.
[0044]
Next, a second embodiment of the present invention will be described with reference to FIG.
[0045]
The second embodiment has a metering service center 10-1. The metering service center 10-1 has a configuration obtained by adding an ESP contract support unit 11F to the metering service center 10 in the first embodiment.
[0046]
The ESP contract support unit 11F is used when the power customer 30 makes a contract with the ESP 20, performs power demand prediction for each power customer 30, combines power products presented from each ESP 20, This is to calculate an optimal power procurement pattern and execute a power purchase contract with the ESP 20.
[0047]
As shown in FIG. 9, the ESP contract support unit 11F includes a weather forecast database 11F1, an economic forecast database 11F2, a calendar information database 11F3, a demand forecast unit 11F4, and a demand forecast database 11F5 as databases. The ESP contract support unit 11F includes a contract condition setting unit 11F6 for performing procedures and the like, an optimal power purchase pattern calculation unit 11F7, a contract power rate display unit 11F8 for each ESP, and an ESP contract procedure unit 11F9.
[0048]
The metering service center 10-1 of the present embodiment uses the power consumption database 11C to record the past power consumption of each power consumer 30 and the data of the weather forecast database 11F1, the economic forecast database 11F2, and the calendar information database 11F3. Based on the above, the power demand prediction value for each power consumer 30 is calculated by the power demand prediction unit 11F4 and stored in the demand prediction database 11F5.
[0049]
In the power liberalization market, not only the price of power differs depending on the time of use, but also the price differs depending on the conditions and quality of power use. In addition, the power consumer 30 does not have to simply make the price low, and needs to decide the purchase of power in consideration of the power supply conditions. Therefore, even when the metering service center 10-1 calculates the optimal power purchase pattern for each power customer 30, it is necessary to take into account the wishes of the power customer 30. Therefore, the contract condition setting unit 11F4 inputs the contract condition from the power consumer 30, and stores information on the contract condition in the ESP contract database 11B.
[0050]
The optimum power purchase pattern calculation unit 11F7 calculates an optimum power purchase pattern based on the data in the demand prediction database 11F5, the power supply product database 22 of the ESP 20, and the ESP contract database 11B. The calculated power purchase pattern is used to display a contract power contract for each ESP 20. This power purchase pattern is processed by the contract power rate display unit 11F8 for each ESP so as to be displayed on the power customer 30 and displayed on the power customer 30 on the contractor display screen. Based on this information, a power purchase contract is concluded with the ESP 20 via the ESP contract procedure unit 11F9.
[0051]
As described above, according to the present embodiment, the power demand for each power consumer 30 is calculated based on the past power consumption of each power consumer 30 and the weather forecast data, economic forecast data, and calendar information. It is possible to calculate the predicted value, while also taking into account the power supply conditions of the ESP 20, to calculate the optimal power purchase pattern for each power customer 30, which allows the power customer 30 to optimize the power purchase. It becomes possible to contract the pattern with the ESP 20 by itself.
[0052]
Next, a third embodiment of the present invention will be described with reference to FIG.
[0053]
The metering service center 10-2 of the present embodiment has a configuration in which a power customer history information generation unit 11G and an ESP history information generation unit 11H are added to the metering service center 10 of the first embodiment.
[0054]
The power customer history information generation unit 11G generates history information on power usage for each power customer 30 based on various data on power usage and consumption obtained by operating the system and stored in a database. is there.
[0055]
The ESP history information generation unit 11H generates history information on power consumption for each ESP 20 based on various data on power usage and consumption obtained by operating the system and stored in the database.
[0056]
The history information for each power customer 30 and each ESP 20 generated by the power customer history information generation unit 11G and the ESP history information generation unit 11H can be useful information when the power customer 30 selects the ESP 20 and makes a contract. In addition, the information can be useful information for planning in promoting business in the ESP 20, which is a power generation company, a transmission and distribution company, a power brokerage company, and the like.
[0057]
Next, a fourth embodiment of the present invention will be described with reference to FIG. The metering service center 10-3 of the present embodiment has a power customer history information generation unit 11G 'instead of the power customer history information generation unit 11G in the metering service center 10-2 of the third embodiment. It is. The power customer history information generation unit 11G 'is for the power customer history information generation unit 11G to generate history information on power usage for each power customer 30 using various data on power usage and consumption. On the other hand, history information relating to the power consumption of each power consumer 30 is generated using the consumption data of water, gas, etc. in addition to the power as a social infrastructure.
[0058]
As described above, the power customer history information generation unit 11G 'creates history information on power usage for each power customer 30 based on the power, water and sewage, and gas usage data, thereby providing power usage and water and sewage usage. It is possible to more accurately grasp the monthly or annual energy demand of each power customer 30 from the three relationships between the amount and the gas usage amount. It can be useful information.
[0059]
In the above description, the contract with the ESP 20 by the power customer 30 is basically performed actively by the power customer 30, but if the automatic contract is selected, the power customer 30 intervenes. Instead, the metering service center 10 can be configured to automatically execute a contract online.
[0060]
In the present system, the billing process of the electricity bill of the metering service center 10 is a proxy billing process of the ESP 20. Alternatively, in the case of the configuration in which the metering service center 10 performs the purchase contract with the ESP 20 as described above, the power customer 30 can be configured to purchase power from the metering service center 10, In this case, the power customer 30 pays the metering service center 10.
[0061]
The calculation of the optimal power pattern that the power customer 30 purchases from the ESP 20 is basically performed at the metering service center 10, but data required for the calculation of the power pattern is metered from the power customer 30 by the metering service center 10. By enabling remote access to the service center 10, it is also possible to calculate using an information terminal installed in the power consumer 30 itself.
[0062]
Further, it is also possible to provide data required for calculating the power pattern to an external device such as an application service provider (ASP) and entrust the calculation.
[0063]
【The invention's effect】
As described above, according to the present invention, it is possible to install one wattmeter at a power consumer, purchase power from a plurality of power sources, and pay a fee to each power source. It is possible to provide a power metering service system, a metering service center, and a metering method capable of simplifying a procedure.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a power metering service system according to a first embodiment of the present invention.
FIG. 2 is a diagram showing an ESP, an electric power consumer, and a metering service center in the embodiment in detail.
FIG. 3 is an exemplary view showing information items held by an ESP contract database in the metering service center of the embodiment.
FIG. 4 is an exemplary view showing information items held in a power consumption database in the metering service center of the embodiment.
FIG. 5 is an exemplary view showing an example of an ESP contract pattern of a power consumer in the embodiment.
FIG. 6 is an exemplary view showing a processing sequence among an ESP, an electric power consumer, a metering service center, and a financial institution in the embodiment.
FIG. 7 is an exemplary flowchart showing a fee payment acting operation performed by the metering service center in the embodiment.
FIG. 8 is a configuration diagram showing a metering service center in a power metering service system according to a second embodiment of the present invention.
FIG. 9 is a configuration diagram showing an ESP contract support operation performed by the metering service center in the embodiment.
FIG. 10 is a configuration diagram showing a metering service center in a power metering service system according to a third embodiment of the present invention.
FIG. 11 is a configuration diagram showing a metering service center in a power metering service system according to a fourth embodiment of the present invention.
[Explanation of symbols]
10, 10-1, 10-2, 10-3 ... metering service center
11 ... Server system
11A: Power consumption calculation unit
11B: ESP contract database
11C: Power consumption database
11D: Charge calculation section
11E ... Optimal purchase pattern calculation unit
11F: ESP contract support department
11G, 11G ': electric power customer history information generation unit
11H: ESP history information generation unit
20 (20-1, 20-2, 20-3) ... ESP (first, second, third ESP)
21 ... ESP client
22 ... Power supply product database
30 ... Electricity consumers
31 ... Wattmeter with communication function
32 ... Power consumer client
40 ... Financial institution
50 ... Power network
60 Communication network

Claims (8)

In a power metering service system including a power customer, a power supply source, and a metering service center connected to a communication network,
The power consumer is provided with a power meter that measures the power consumption of the power consumer on a time axis and transmits the measurement data to the metering service center via the communication network,
The metering service center includes a contract database that holds contract data for each of the power consumers, in which the power supply source that receives power supply along a time axis is selected, and the power received through the communication network. A power consumption database that holds measurement data relating to power consumption for each customer; and a power consumption amount and the power demand for each power supply source based on the data stored in the contract database and the power consumption database. A power usage calculator for calculating the power usage for each house; and the power supply source for each power source based on the power usage for each power source and the power usage for each power consumer by the power usage calculation unit. Comprising a charge calculation unit that calculates the electricity bill paid and the billed electricity bill for each power consumer.
A power metering service system characterized by the above. A contract database that holds contract data for each power consumer, in which a power supply source that receives power supply along the time axis is selected,
A power consumption database that holds measurement data related to power consumption along a time axis for each power consumer received via a communication network,
A power usage calculator that calculates the power usage per power supply source and the power usage per power consumer based on the data held in the contract database and the power usage database;
The power consumption calculator calculates an electricity bill to be paid for each power supplier and a billed electricity bill for each power consumer based on the power consumption for each power supplier and the power consumption for each power consumer. A metering service center comprising: The metering service center according to claim 2, further comprising:
An optimal purchase pattern for selecting and contracting the power supply source to purchase power by performing demand prediction of the power consumer based on at least the data held in the contract database and the power product data presented from the power supply source A metering service center comprising a calculation unit. The metering service center according to claim 2, further comprising:
A power supply source for selecting and contracting the power supply source to purchase power by performing demand prediction of the power consumer based on at least the data held in the contract database and the power product data presented from the power supply source A metering service center comprising a contract support unit. The metering service center according to any one of claims 2 to 4, further comprising:
A history information generating unit configured to generate at least one of history information for each power supply source and history information for each power consumer based on data held in the contract database and the power consumption database. Metering service center. The metering service center according to claim 5, wherein the history information generation unit takes into account water and sewage and gas usage. The metering service center according to any one of claims 1 to 6, wherein the charge calculation unit includes means for performing a transfer process to a financial institution. In a metering method executed in a power customer, a power supply source, and a metering service center connected to a communication network,
A measurement step of measuring the power consumption of the power consumer on a time axis and transmitting the measurement data to the metering service center via the communication network,
The power consumption of each power supply source and the power consumption of the power customer based on the contract data and the measurement data of the power customer, which is a power supply source that receives power supply along a time axis. Calculating a power usage amount,
A charge calculating step of calculating a payment electricity rate for each power supply source and a billing electricity rate for the power consumer based on the calculated power usage amount for each power supply source and the power usage amount for the power consumer; and A metering method, comprising:

Images