JP2002297714A - System, method and program for simulation of electricity rate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a merit (and a demerit) such as reduction of a electricity rate clearly informed by only a simple operation, when an agreement with an electric power supply company is changed from a 'low voltage agreement' to a 'high voltage agreement'. SOLUTION: A user's name or designation, an address or electronic mail address, an electricity charge amount in the past, a used electric power amount, a contracted KVA, a contracted KW, business hours of a user's shop or office and the like are transmitted to a simulation server to conduct simulation through a browser terminal for perusing an Web page used by the user, in order to simulate a change of the electricity rate when a user using the low- voltage power supply agreement changes the agreement to the high-voltage power supply agreement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a system in which a user who uses a "low-voltage power supply contract using low-voltage power converted by a transformer installed by a power supply company" is referred to as a "high-voltage power transmission line. The present invention relates to an electricity rate simulation system, method, and program for simulating a change in electricity rates when a "high-voltage electricity supply contract" is used in which power is converted to a low voltage by a transformer installed in a user's facility. .

[0002]

2. Description of the Related Art Conventionally, each business operator (user) has been supplied with business power from a local power supply company such as Tokyo Electric Power Company or Chugoku Electric Power Company. Two methods are adopted.

[0003] The first method is to use 6,000 lines flowing through transmission lines.
The high-voltage power of V or more is converted to a low voltage of 100 V or 200 V by a power supply company-side transformer installed on a power pole of a transmission line or the like, and the low-voltage power is received and used in a user's business facility. This is a "low-pressure contract" method.
This method is used by small and medium-sized business users and ordinary households.

[0004] In the second method, high-voltage power of 6,000 V or more of a transmission line is directly received in a user's business facility, and the high-voltage power is supplied to a 100 V or 200 V by a transformer installed in the user's business facility. This is a "high-pressure contract" system that is used by converting to low pressure. This system is used by business users who operate a large-scale business such as a retail supermarket.

[0005] From the standpoint of electricity bills, the above-mentioned second high-voltage contract is set at a lower cost, and has the advantage of greatly reducing electricity bills. Users also have the disadvantage of installing transformers in their facilities and maintaining them by themselves. However, many business users in Japan, especially small and medium-sized business users, are clearly aware of the advantages and disadvantages of choosing the above "high-voltage contract" due mainly to lack of knowledge on electricity bills. Without the first
A low-pressure contract with a local power company.
The fact is that the low-pressure contract continues as it is.

[0006] That is, the formula for calculating the electricity rate set by the current power supply company is very complicated, and for the layman, the contract system with the power supply company is changed from "low-pressure contract" to "high-pressure contract". It is extremely difficult to know the change in the electricity bill when the electricity is charged. Therefore, if the contract method with a power supply company is changed from a "low-voltage contract" to a "high-voltage contract", even if a little demerit can be expected to have many advantages (reduction of electricity bills), without knowing that, (Without recognizing the advantages and disadvantages of changing from a “low-pressure contract” to a “high-pressure contract”), there are quite a number of business users who continue to use traditional “low-pressure contracts” indiscriminately. It is a fact.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is simple to operate even for general business users who are not familiar with the method of calculating electricity bills. Electricity price simulation that allows you to clearly understand the benefits (and disadvantages) such as the reduction of electricity costs that occur when changing the contract with a power supply company from a "low-voltage contract" to a "high-voltage contract" It is intended to provide a system, a method, and a program.

[0008]

An electric bill simulation system according to the present invention for solving the problems of the prior art uses "low-voltage power converted to low voltage by a transformer installed by a power supply company." , Low-voltage power supply contract "changed to" high-voltage power supply contract, which converts high-voltage power from transmission lines to low-voltage using a transformer installed in the user's facility " An electricity bill simulation system for simulating a change in electricity bill when the user performs, a browser terminal for browsing a Web page used by the user, an input field for the name or name of the user, an address, or an electronic mail. E-mail address input field, past one or more months electricity rate input field, past one or more months electricity usage input field, Contract KV has signed up to the supply company
A input field, the input field of the contract KW applied to the power supply company, the business hours input field of the user's store or office,
And a Web for displaying a plurality of input fields, which are regular holiday or business day input fields of the user's store or office, and in which the user can input data from the browser terminal.
A web server for transmitting a web page for displaying a simulation result from a simulation server to be described later to the browser terminal of the user, and a user inputting the web page to the browser terminal via the Internet; And a simulation server for simulating an electricity bill when the user changes to a high-voltage power supply contract based on the input data.

[0009] In addition, the electricity rate simulation system of the present invention allows a user who uses a “low-voltage power supply contract using low-voltage power converted to low-voltage by a transformer installed by a power supply company” to “transmission contract”. An electricity rate simulation system for simulating changes in electricity rates when changing to a high-voltage power supply contract that converts high-voltage power from electric wires into low-voltage power using a transformer installed in the user's facility And a browser terminal used by the user for browsing a Web page, a name input field for the user, an input field for an e-mail address, and an electricity bill for one or more past months , Input field for one or more past months of electricity consumption, input field for contract KVA applied to the power supply company, Input field of crowded in that contract KW,
A business hours input field of the user's store or office, and a regular holiday or business day input field of the user's store or office, and a plurality of input fields in which the user can input data from the browser terminal are displayed. A web server for transmitting a web page to the browser terminal via the Internet, and when the user changes to a high-voltage power supply contract based on data input by the user in an input field of the web page. A simulation server for simulating an electricity bill, and a mail server for sending a simulation result from the simulation server to the user by e-mail are provided.

[0010] In addition, according to the electricity rate simulation method of the present invention, a user who uses a “low-voltage power supply contract using low-voltage power converted to low voltage by a transformer installed by a power supply company” is called “transmission contract”. Electricity rate simulation method for simulating changes in electricity rates when changing to a high-voltage power supply contract that uses high-voltage power from electric wires converted to low-voltage by a transformer installed in the user's facility An input field for the user's name or name, an input field for an address or an email address, an input field for an electric bill amount in one or more past months, electricity usage in one or more past months Input field for quantity, input field for contract KVA applied to power supply company, input field for contract KW applied for power supply company, business hours of user's store or office , And, a user of the store or regular holiday or business day input field of the office, the Web page for displaying a plurality of input fields in which the user can input the data from the browser terminal, from the Web server,
Transmitting to the browser terminal on the user side via the Internet, simulating an electricity bill when the user changes to a high-voltage power supply contract based on data input by the user in the input field of the Web page, And transmitting a Web page displaying the simulation result to the browser terminal on the user side.

[0011] In addition, according to the electricity rate simulation method of the present invention, a user who uses a “low-voltage power supply contract using low-voltage power converted to low voltage by a transformer installed by a power supply company” is called “transmission contract”. Electricity rate simulation method for simulating changes in electricity rates when changing to a high-voltage power supply contract that uses high-voltage power from electric wires converted to low-voltage by a transformer installed in the user's facility In the input field of the user's name or name, the input field of the e-mail address, the input field of the amount of electricity bills in the past one or more months, the amount of electricity used in the past one or more months An input field, an input field of a contract KVA applied to the power supply company, an input field of a contract KW applied to the power supply company, a business hours input field of the user's store or office, and A web page for displaying a plurality of input fields in which the user can enter data from the browser terminal, which is a regular holiday or business day input field of the store or office of the user, from a web server via the Internet, Transmitting to the user-side browser terminal, simulating an electricity bill when the user changes to a high-voltage power supply contract, based on data entered by the user in an input field of the web page, and Transmitting a simulation result to the user by e-mail.

Further, the computer program for electricity price simulation according to the present invention is provided for a user who uses a "low-voltage power supply contract using low-voltage power converted to low voltage by a transformer installed by a power supply company". Electricity tariff for simulating changes in electricity tariffs when changing to a high-voltage power supply contract that uses high-voltage power from transmission lines converted to low-voltage by a transformer installed in the user's facility A computer program for simulation, the input field of the user's name or name,
Address or e-mail address input field, past one or more months electricity rate input field, past one or more months electricity usage input field, contract KVA applied to power supply company Input field, the input field of the contract KW applied to the power supply company, the business hours input field of the user's store or office, and the regular holiday or business day input field of the user's store or office, A function of transmitting a Web page for displaying a plurality of input fields in which a user can input data from the browser terminal from a Web server to the browser terminal on the user side via the Internet; A function of simulating an electricity bill when the user changes to a high-voltage power supply contract based on the data inputted by the user; A function of transmitting a Web page to the user side of the browser terminal that displays ® emissions result is for realizing.

[0013] Further, the computer program for electricity price simulation of the present invention provides a program for “using low-voltage power converted to low voltage by a transformer installed by a power supply company,
A user using a "low-voltage power supply contract" is a "high-voltage power supply contract that uses high-voltage power from transmission lines converted to low-voltage using a transformer installed in the user's facility."
A computer program for simulating a change in the electricity rate when the electricity rate is changed to a name, an input field for the name of the user, an input field for an e-mail address, and one or more past months. Input column for the amount of electricity, input column for the amount of electricity used in one or more past months, input column for the contract KVA applied to the power supply company, input column for the contract KW applied for the power supply company, user To display a plurality of input fields in which the business hours of the store or office, and regular holidays or business days of the user's store or office, and in which the user can input data from the browser terminal. Transmitting a Web page from a Web server to the user's browser terminal via the Internet; and Based on data entered by the user in the input field, a function to simulate the electricity rate when the user has changed to a high-voltage power supply contract, and a function to send the simulation result to the user by e-mail, It is for realizing.

The computer program according to the present invention is, for example, recorded on a recording medium such as a hard disk of a computer and executed by a CPU, and is executed by an ASP (application service provider) via a network such as the Internet. It may be transmitted (transferred / lent) to the information terminal on the side.

[0015]

Embodiments of the present invention will be described below. FIG. 1 is a schematic block diagram conceptually showing an electricity bill simulation system according to the present embodiment. In FIG. 1, reference numeral 1 denotes the Internet, 2 denotes a user terminal used by a large number of business users, for example, a terminal equipped with a browser or mailer, and 3 denotes a Web page described later based on a distribution request from the user terminal 2 (FIG. 2). Web page for distributing to the user terminal 2 via the Internet
The server 4 is a simulation server for simulating a change in electricity bill when the user changes from the current low-pressure contract to the high-pressure contract based on data input from the user terminal 2 through a Web page described later. This is a mail server for distributing simulation results and the like from the simulation server 4 to the user terminal 2 by e-mail.

Next, FIG. 2 shows that the Web server 3 of FIG.
1 shows an example of a Web page to be distributed to the Internet. The Web page includes a name / name input field 11 for prompting the user to input his / her name or name, an address input field 12 for prompting the user to input his / her address, and an input of his / her own email address. Field 13 for prompting the user to enter his / her own telephone number, previous month electricity bill for prompting the user to enter the amount of electricity bill based on the company's previous month's low-voltage contract Column 15, a previous month's electricity usage (KVA) input column 16 for prompting the user to enter the previous month's electricity usage (KVA), last month's electricity usage for prompting the user to enter the previous month's electricity usage (KW) (KW) input field 17, a contract KVA input field for prompting the user to input a current contract KVA (when receiving a low-voltage power supply of 100 V) applied to the power supply company 8. A contract KW input field 19 for prompting the user to input a current contract KW (when receiving low-voltage power supply of 200 V) applied to the power supply company, and sales of the user's office (store or office) Time (for example,
A business hours input field 20 for prompting the user to input “from 9:00 to 17:00”, and a regular holiday or business day (for example, “every Thursday” etc.) of the user's office (store or office) Various input fields such as a business hours input field 21 for prompting are arranged.

In the example shown in FIG. 2, the electric charge input field indicated by reference numeral 15 is used to input only the electric charge for the previous month (one month) of the user. For example, the user may input an electric charge for a plurality of past months, such as inputting an electric charge for 12 months. Similarly, in the example of FIG. 2, the electricity consumption input fields indicated by reference numerals 16 and 17 are used to input only the electricity consumption of the previous month (one month) of the user, but in the present invention. ,
For example, it is also possible to input the electric power consumption for a plurality of past months, such as inputting the electric power consumption for the past 12 months.

The user can access the W via the Internet.
The user accesses the web server 3 and distributes the web page shown in FIG. 2 to display the web page on his own browser screen.
Use a browser to enter data into each of the input fields displayed on the page. Then, the data input by the user through the browser is transmitted from the Web server 3 to the simulation server 4. The simulation server 4 simulates, based on the data from the Web server 3, a change in electricity bill when the user changes from “low-voltage contract” to “high-voltage contract”, and sends the result to the Web server 3. (The contents of the simulation calculation will be described later with reference to FIGS. 4 and 5). The Web server 3 receiving the simulation result edits the simulation result in a predetermined format and converts the simulation result into a Web page to the user terminal 2.
And send it to the browser screen.

FIG. 3 shows an example of a Web page for displaying a simulation result transmitted from the Web server 3 to the user terminal 2 in this way. In FIG. 3, reference numeral 31 denotes a previous month electricity rate display column for displaying the previous month's electricity rate according to the current low voltage contract of the user, and 32 denotes that the user has concluded a high voltage contract (business power contract) with the same electricity consumption. A simulated electricity rate display column 33 for displaying a "simulated previous month electricity rate" calculated when the user has made a high-voltage contract (business high load rate contract) with the same amount of electricity used A simulated electricity rate display column for displaying the “simulated previous month electricity rate” calculated at the time is calculated when assuming that the user has concluded a high-voltage contract (TOU contract for business use) with the same electricity consumption. A simulated electricity rate display column for displaying the “simulated previous month electricity rate”, 35 is calculated when it is assumed that the user has concluded a high-voltage contract (business high load rate TOU contract) with the same electricity consumption. Simulating an electric charge display column for displaying the "simulated the previous month, electricity fee" to be. The above-mentioned commercial power contract, commercial high load factor contract, commercial TOU contract, and commercial high load factor TOU contract are contract types that are provided in advance by the power supply company as options for the high-voltage contract. .

In FIG. 3, 32a, 33a, 3
4a and 35a are "simulated previous month electricity rates" displayed in the respective simulated electricity rate display columns 32, 33, 34 and 35, and "previous month" displayed in the previous month electricity rate display section 31 respectively. This is a difference display column for displaying a difference from the electricity rate (actual amount under a low-voltage contract).

In FIG. 3, reference numeral 36 denotes the lowest simulated electricity rate among the simulated electricity rates displayed in the respective simulated electricity rate display columns 32, 33, 34, and 35 and the previous month electricity rate display. This is a one-month reduction amount display column for displaying the difference from the previous month's electricity price (actual amount under a low-voltage contract) displayed in the column 31 as “one-month reduction in electricity price”. Reference numeral 37 denotes a one-month lease charge display for displaying a transformer lease charge (one month) when a user installs a transformer in the company's facility to change from a current low-voltage contract to a high-pressure contract. Column. Reference numeral 38 denotes a net profit (low-voltage contract) obtained by subtracting the one-month lease payment displayed in the one-month lease payment display field 37 from the one-month reduction displayed in the one-month reduction payment display field 36. In order to change to a high-voltage contract, it is necessary to pay a monthly lease fee for the transformer, so the monthly profit can be calculated by subtracting the lease fee from the reduction in the monthly electricity bill.)
Is a one-month net profit display column for displaying.

In the examples described above with reference to FIGS. 1 to 3, the simulation result by the simulation server 4 is generated by the Web server 3 as a Web page and transmitted to the user terminal 2. On the other hand, in the present embodiment, the mail server 5 transmits the simulation result by the simulation server 4 as an e-mail (for example, as a file of spreadsheet software attached to the e-mail) to a user terminal (e-mail mounted). 2). Specifically, in FIG. 1, the simulation server 4 transmits the simulation result to the mail server 5 instead of the Web server 3. At the same time or before or after this, the Web server 3 stores the user's e-mail address (see the e-mail address input column 13 in FIG. 2) input by the user side into the mail server 5.
Send to The mail server 5 stores the simulation result from the simulation server 4 and the Web
The simulation result is transmitted to the user terminal 2 by e-mail based on the mail address of the user from the server 3.

In the present embodiment, whether the simulation result is to be distributed by a Web page or by e-mail is determined by the user according to the WEB of FIG.
b page (for example, W in FIG. 2)
A selection button may be displayed in a part of the web page), or the system operator (operator such as the web server 3) of the present embodiment may set any one.

Next, FIG. 4 shows the result of the simulation performed by the simulation server 4 attached to the user terminal 2 when the mail server 5 transmits the result to the user terminal 2 as an attached file of an e-mail (for example, a file of spreadsheet software). FIG. 6 is a diagram illustrating an example of display contents of a file. In the attached file of FIG. 4, not only the simulation result is displayed, but also a numerical value that allows the user to see the calculation process is displayed. In the attached file in Fig. 4, the lower part shows the total cost of high-voltage power receiving equipment (such as transformers), the amount of lease fees when a user uses a lease for transformers, etc. (one month lease fee and annual lease fee). Fees), and the net profit after deducting the lease payments (one month profit and annual profit). The information shown in FIG. 4 has been described on the assumption that the information is transmitted from the mail server 5 to the user terminal (mailer) 2 as an attached file of an e-mail. However, in the present invention, the information shown in FIG. The Web server 3 may transmit the Web page to the user terminal (browser) 2 as a Web page.

Next, FIG. 5 shows the result of the simulation performed by the simulation server 4 when the mail server 5 transmits the result of the simulation to the user terminal 2 as an attached file (for example, a file of spreadsheet software) of the electronic mail. FIG. 11 is a diagram illustrating another example of the display content of the file. In the attached file of FIG. 5, similarly to FIG. 4, not only the simulation result is displayed, but also a numerical value that allows the user to see the calculation process is displayed. That is, in the attached file of FIG. 5, it is assumed that, in the upper half, a list of electricity charges (for 12 months) of the current user's low-voltage contract is displayed, and in the lower half, the user changes to the high-pressure contract. Simulated electricity charges under the same usage conditions (1
2 months) are listed. The lower half of the list of simulated electricity rates shows the simulated electricity rates for each of the commercial power contract, commercial high load rate contract, commercial TOU contract, and commercial high load rate TOU contract as option contracts. Is displayed. In the lower half of the list of simulated electricity rates, a comparison with the electricity rate under the current low-voltage contract (difference = reduction of the electricity rate) is also displayed. Although the information shown in FIG. 5 has been described on the assumption that the information is transmitted from the mail server 5 to the user terminal (mailer) 2 as an attached file of an e-mail, in the present invention, the information shown in FIG. Web server 3
May be transmitted to the user terminal (browser) 2 as a Web page.

[0026]

As described above, according to the electricity rate simulation system, method, and program of the present invention, even a general business user who is not familiar with the method of calculating the electricity rate, etc., can perform a simple operation. In addition, it is possible to clearly understand advantages (and disadvantages) such as a reduction in electricity rates when a contract with a power supply company is changed from a “low-voltage contract” to a “high-voltage contract”.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram for explaining the concept of an electricity bill simulation system according to an embodiment of the present invention.

FIG. 2 is an exemplary view showing an example of a Web page including a data input field distributed by the Web server in the embodiment.

FIG. 3 is an exemplary view showing an example of a Web page including a simulation result, which is distributed by a Web server in the embodiment.

FIG. 4 is a view showing an example of an attached file of an e-mail including a simulation result, which is distributed by a mail server in the embodiment.

FIG. 5 is a view showing another example of an attached file of an e-mail including a simulation result, which is distributed by a mail server in the embodiment.

[Explanation of symbols]

 1 Internet 2 User terminal 3 Web server 4 Simulation server 5 Mail server

[Procedure amendment]

[Submission date] April 19, 2002 (2002.4.1
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Claims (6)

[Claims] Claims 1. A user using a "low-voltage power supply contract that uses low-voltage power converted to low-voltage by a transformer installed by a power supply company side" An electricity bill simulation system for simulating a change in electricity bill when changing to a `` high voltage electricity supply contract, which is used by converting to a low voltage with a transformer installed in the facility, '' A browser terminal for browsing a Web page, an input field for the user's name or name, an input field for an address or an e-mail address, an input field for one or more past months of electricity charges, Input field for one or more months of electricity consumption, input field for contract KVA applied to the power supply company, input field for contract KW applied for the power supply company, Business hours input field of a store or office, and a regular holiday or business day input field of a user's store or office, for displaying a plurality of input fields in which the user can input data from the browser terminal. A web server for transmitting a web page to the browser terminal via the Internet and transmitting a web page for displaying a simulation result from a simulation server to be described later to the user's browser terminal; and A simulation server for simulating an electricity bill when the user changes to a high-voltage power supply contract based on data input by the user. 2. A user using a “low-voltage power supply contract using low-voltage power converted to low-voltage by a transformer installed by a power supply company” is referred to as “a high-voltage power from a transmission line to a user side. An electricity bill simulation system for simulating a change in electricity bill when changing to a `` high voltage electricity supply contract, which is used by converting to a low voltage with a transformer installed in the facility, '' , A browser terminal for browsing a web page, an input field for the user's name or name, an input field for an e-mail address, an input field for an electric bill amount in one or more past months, one in the past or Input fields for a plurality of months of electricity consumption, input fields for a contract KVA applied to a power supply company, input fields for a contract KW applied for a power supply company,
A business hours input field of the user's store or office, and a regular holiday or business day input field of the user's store or office, and a plurality of input fields in which the user can input data from the browser terminal are displayed. A web server for transmitting a web page to the browser terminal via the Internet, and when the user changes to a high-voltage power supply contract based on data input by the user in an input field of the web page. An electricity bill simulation system, comprising: a simulation server for simulating electricity bills; and a mail server for sending a simulation result from the simulation server to the user by e-mail. 3. A user using a “low-voltage power supply contract that uses low-voltage power converted to low voltage by a transformer installed by a power supply company” is “a high-voltage power from a transmission line to the user side. It is a method of simulating a change in the electricity rate when changing to a `` high-voltage power supply contract, '' which is used by converting to a low voltage with a transformer installed in the facility, wherein the name of the user or Name input field, address or e-mail address input field, past one or more months electricity rate input field, past one or more months electricity usage input field, power supply company An entry field for the contract KVA that has been applied, an entry field for the contract KW that has been applied for to the power supply company, an entry field for the business hours of the user's store or office, and a regular holiday for the user's store or office. A business day input field, the Web page for displaying a plurality of input fields in which the user can input the data from the browser terminal, from the Web server, over the Internet,
Transmitting to a browser terminal on the user side; simulating an electricity bill when the user changes to a high-voltage power supply contract based on data input by the user in an input field of the Web page;
And transmitting a Web page displaying the simulation result to the user's browser terminal. 4. A user using a “low-voltage power supply contract that uses low-voltage power converted to low-voltage by a transformer installed by a power supply company” and “uses high-voltage power from a transmission line to the user. It is a method of simulating a change in the electricity rate when changing to a `` high-voltage power supply contract, '' which is used by converting to a low voltage with a transformer installed in the facility, wherein the name of the user or Name input field, e-mail address input field, past one or more months electricity rate input field, past one or more months electricity usage input field, apply to power supply company Input field of the contract KVA, the input field of the contract KW applied to the power supply company,
A business hours input field of the user's store or office, and a regular holiday or business day input field of the user's store or office, and a plurality of input fields in which the user can input data from the browser terminal are displayed. Transmitting a web page for the user from the web server to the browser terminal on the user side via the Internet, based on the data input by the user in the input field of the web page, Simulating electricity rates when changed,
And transmitting the simulation result to the user by e-mail. 5. A user using a “low-voltage power supply contract using low-voltage power converted to low-voltage by a transformer installed by a power supply company” is used by a user to “convert high-voltage power from a transmission line to the user side. A computer program for electricity rate simulation for simulating a change in electricity rate when changed to a `` high-voltage power supply contract '' which is used by converting to a low voltage with a transformer installed in the facility, Name or name input field, address or e-mail address input field, past one or more months electricity rate input field, past one or more months electricity usage input field, power supply An input field for the contract KVA applied to the company, an input field for the contract KW applied to the power supply company, a business hours input field for the user's store or office, and the user's store Is a regular holiday or business day input field of the office, the Web page for displaying a plurality of input fields in which the user can input the data from the browser terminal, from the Web server, over the Internet,
A function of transmitting to the user's browser terminal, a function of simulating an electricity bill when the user changes to a high-voltage power supply contract based on data input by the user in the input field of the Web page, and the simulation A function of transmitting a Web page displaying a result to the browser terminal on the user side; 6. A user using a “low-voltage power supply contract using low-voltage power converted to low-voltage by a transformer installed by a power supply company” is “a high-voltage power from a transmission line to a user side. A computer program for electricity rate simulation for simulating a change in electricity rate when changed to a `` high-voltage power supply contract '' which is used by converting to a low voltage with a transformer installed in the facility, Name or name input field, e-mail address input field, past one or more months electricity rate input field, past one or more months electricity usage input field, power supply company An input field for the contract KVA applied for, an input field for the contract KW applied for the power supply company,
A business hours input field of the user's store or office, and a regular holiday or business day input field of the user's store or office, and a plurality of input fields in which the user can input data from the browser terminal are displayed. For transmitting a web page for the user from the web server to the browser terminal on the user side via the Internet, based on the data input by the user in the input field of the web page, and A computer program for simulating an electricity bill for realizing: a function of simulating an electricity bill when the electricity bill is changed to; and a function of transmitting the simulation result to the user by e-mail.