Information processing system, information processing method and program

Abstract

To enable emission right trading to be supported.SOLUTION: An information processing system includes an emission right storage part for storing emission right specification information for specifying emission rights that can offset emission rights of greenhouse gas in association with region specification information for specifying a region in which the emission rights can be used, an input part for receiving a request for offset from a user, a user information storage part for storing the address of the user, and a presentation part for specifying the emission rights stored in the emission right storage part and the emission rights that can be used at the address, and presenting information showing the specified emission rights to the user.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an information processing system, an information processing method, and a program. [Background technology]

[0002] Carbon dioxide emission rights are being traded (see Patent Document 1) [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-306839 Summary of the Invention [Problem to be solved by the invention]

[0004] Deciding which emission rights to purchase is a hassle.

[0005] The present invention has been made in view of the above background, and has an object to provide a technology that can support emissions trading. [Means for solving the problem]

[0006] The main invention of the present invention for solving the above problem is an information processing system comprising: an emission rights storage unit that stores emission rights specification information that specifies emission rights that can offset greenhouse gas emissions and area specification information that specifies areas where the emission rights can be used, in association with each other; an input unit that receives requests for offsetting from users; a user information storage unit that stores the location of the users; and a presentation unit that, in response to the request, specifies the emission rights that can be used in the location from the emission rights stored in the emission rights storage unit, and presents information indicating the specified emission rights to the user.

[0007] Other problems and solutions disclosed in this application will be made clear in the section on preferred embodiments of the invention and the drawings. [Effects of the Invention]

[0008] According to the present invention, it is possible to support emissions trading. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating an example of the overall configuration of an information processing system. [Figure 2] FIG. 2 illustrates an example of a hardware configuration of a management server 2. [Figure 3] FIG. 2 illustrates an example of the software configuration of a management server 2. [Figure 4] FIG. 10 is a diagram illustrating processing for invalidation information in which automatic invalidation is "false." [Figure 5] FIG. 10 is a diagram illustrating processing for invalidation information in which automatic invalidation is "true." DETAILED DESCRIPTION OF THE INVENTION

[0010] <Summary of the Invention> The present invention will be described by listing the contents of the embodiments. For example, the present invention has the following configuration. [Item 1] an emission credit storage unit that stores emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and area specification information that specifies areas where the emission credits can be used, in association with each other; an input unit for receiving a request for offset from a user; a user information storage unit that stores the location of the user; a presentation unit that, in response to the request, identifies the emission rights that are stored in the emission right storage unit and that can be used at the location, and presents information indicating the identified emission rights to the user; An information processing system comprising: [Item 2] Item 1, an information processing system according to item 1, the emission credit storage unit stores the emission credit specification information, the available area, and the emission credit creation area in association with each other; the presentation unit, in response to the request, identifies the emission rights stored in the emission rights storage unit, the location of which is included in the available area and the location of which is included in the production area, and presents information indicating the identified emission rights to the user; An information processing system characterized by: [Item 3] Item 1, an information processing system according to item 1, the emission credit storage unit stores the emission credit specification information, the available area, and the emission credit creation area in association with each other; the presentation unit, in response to the request, identifies the emission rights stored in the emission rights storage unit and whose location is included in the available area, and when presenting information indicating the identified emission rights to the user, presents preferentially those whose location is included in the production area; An information processing system characterized by: [Item 4] an emission credit storage unit that stores emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and regions that generate the emission credits in association with each other; an input unit for receiving a request for offset from a user; a user information storage unit that stores the location of the user; a presentation unit that, in response to the request, identifies the emission rights stored in the emission rights storage unit and whose location is included in the emission rights production area, and presents information indicating the identified emission rights to the user; An information processing system comprising: [Item 5] an emission credit storage unit that stores emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and regions that generate the emission credits in association with each other; an input unit for receiving a request for offset from a user; a user information storage unit that stores the location of the user; a presentation unit that refers to the emission credit storage unit in response to the request and presents information indicating the emission credits to the user, the presentation unit preferentially presenting information indicating the emission credits whose location is included in the emission credit generation area; An information processing system comprising: [Item 6] a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and area specification information that specifies areas where the emission credits can be used, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission rights stored in the emission rights storage unit and whose location is included in the available area, and presenting information indicating the identified emission rights to the user; An information processing method characterized by being executed by a computer. [Item 7] a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission rights stored in the emission rights storage unit and whose location is included in the emission rights production area, and presenting information indicating the identified emission rights to the user; An information processing method characterized by being executed by a computer. [Item 8] a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; a step of referring to the emission credit storage unit in response to the request and presenting information indicating the emission credits to the user, the step of preferentially presenting information indicating the emission credits whose location is included in the emission credit generation area; An information processing method characterized by being executed by a computer. [Item 9] a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and area specification information that specifies areas where the emission credits can be used, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission credits whose location is included in the available area from the emission credit storage unit, and presenting information indicating the identified emission credits to the user; A program that causes a computer to execute the following. [Item 10] a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission credits whose locations are included in the emission creation area from the emission credit storage unit, and presenting information indicating the identified emission credits to the user; A program that causes a computer to execute the following. [Item 11] a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; a step of referring to the emission credit storage unit in response to the request and presenting information indicating the emission credits to the user, the step of preferentially presenting information indicating the emission credits whose location is included in the emission credit generation area; A program that causes a computer to execute the following.

[0011] <System Overview> An information processing system according to one embodiment of the present invention is described below. The information processing system according to this embodiment supports the trading of greenhouse gas emission credits (J-Credits are assumed in this embodiment, but other types of emission credits are also applicable). The system matches emission credits created through greenhouse gas emission reductions and absorption with the greenhouse gas emissions to be offset. The number of J-Credits available varies depending on the greenhouse gas emission activity. Furthermore, the number of J-Credits available for reporting varies depending on rules such as the Global Warming Countermeasures Act, the Energy Conservation Act, SBT, CDP, and RE100. Furthermore, the countries or regions in which emission credits can be used are limited. In addition, some businesses that offset carbon using agricultural emission credits (e.g., emission credits created by farmers using biochar on their farmland) or forest sink emission credits (e.g., emission credits created by afforestation, thinning, etc.) also have a need to use locally produced emission credits (e.g., emission credits created locally). In the information processing system of this embodiment, available emission credits are proposed to users (hereinafter referred to as "users") who wish to offset greenhouse gas emissions. Locally produced credits are an example of locally produced and locally consumed emission credits.

[0012] 1 is a diagram showing an example of the overall configuration of an information processing system. The information processing system of this embodiment is configured to include a management server 2. The management server 2 is communicably connected to each of an owner terminal 1, a user terminal 3, and an invalidation server 4 via a communication network. The communication network is, for example, the Internet, and is constructed using a public telephone network, a mobile phone network, a wireless communication path, Ethernet (registered trademark), etc.

[0013] The holder terminal 1 is a computer operated by a user who has created an emission credit by reducing or absorbing greenhouse gas emissions (hereinafter referred to as an emission credit holder). The holder terminal 1 may be, for example, a smartphone, a tablet computer, or a personal computer.

[0014] The user terminal 3 is a computer operated by a user. The user terminal 3 may be, for example, a smartphone, a tablet computer, or a personal computer.

[0015] The management server 2 is a computer that manages information about emission credits and proposes emission credits to users. The management server 2 may be a general-purpose computer such as a workstation or personal computer, or may be logically realized by cloud computing.

[0016] The invalidation server 4 is a computer of an organization that issues emission credits and is responsible for invalidating greenhouse gas emissions based on the emission credits (an organization that operates the J-Credit Scheme). In this embodiment, it is assumed that the invalidation process is performed by sending a request to invalidate the emission credits to the invalidation server 4 (including, for example, sending a request for invalidation by email).

[0017] <Administration Server> FIG. 2 is a diagram illustrating an example of the hardware configuration of the management server 2. Note that the illustrated configuration is an example, and other configurations may also be used. The management server 2 includes a CPU 201, a memory 202, a storage device 203, a communication interface 204, an input device 205, and an output device 206. The storage device 203 stores various data and programs, and is, for example, a hard disk drive, a solid state drive, or a flash memory. The communication interface 204 is an interface for connecting to a communication network, and is, for example, an adapter for connecting to Ethernet (registered trademark), a modem for connecting to a public telephone network, a wireless communication device for wireless communication, or a USB (Universal Serial Bus) connector or an RS232C connector for serial communication. The input device 205 is used to input data, and is, for example, a keyboard, a mouse, a touch panel, a button, a microphone, or the like. The output device 206 is used to output data, and is, for example, a display, a printer, a speaker, or the like. Each functional unit of the management server 2 described below is realized by the CPU 201 reading a program stored in the storage device 203 into the memory 202 and executing it, and each storage unit of the management server 2 is realized as part of the storage area provided by the memory 202 and the storage device 203.

[0018] The hardware configurations of the owner terminal 1, the user terminal 3, and the invalidation server 4 can also be the same as that of the management server 2.

[0019] 3 is a diagram illustrating an example of the software configuration of the management server 2. The management server 2 includes an emission credit storage unit 231, an offset attribute storage unit 232, an invalidation information storage unit 233, a user information storage unit 234, an input unit 211, an emission credit acquisition unit 212, a request reception unit 213, and an invalidation processing unit 214.

[0020] <Storage section> The emission credit storage unit 231 stores information about emission credits that can offset greenhouse gas emissions (hereinafter referred to as emission credit information). The emission credit information may include, in association with emission credit identification information (emission credit ID) that identifies the emission credit, the name of the emission credit (emission credit name), the greenhouse gas emission region where the emission credit can be used for offsetting (available region), the region where the emission credit was created, the attributes of the emission credit, and the maximum amount of greenhouse gas that can be offset using the emission credit (maximum offset amount) and the minimum amount (minimum offset amount). The available region may be identified by, for example, country, region, district, prefecture, city, town, or village. The minimum offset amount determines the sales unit of the emission credit and can be set arbitrarily by the holder of the emission credit, for example, in units of 1 ton, 50 tons, 100 tons, etc. The attributes may include a methodology related to the emission credit (specifying the scope of application, calculation method and monitoring method of emission reductions and removals for each technology that contributes to emission reductions and removals). The attributes may include the type of emission credit.

[0021] The offset attribute storage unit 232 stores attributes of emission credits that can offset emissions related to an activity, in association with activity specification information that specifies the activity. In this embodiment, the offset attribute storage unit 232 stores rule specification information that specifies rules related to reporting emissions, activity specification information, and attributes in association with each other. The rule specification information can be, for example, "Act on Global Warming Countermeasures," "Energy Conservation Act," "Carbon Offset," "CDP Questionnaire," "SBT," "RE100," etc. The activity specification information can be, for example, "fuel combustion," "electricity use," etc.

[0022] The invalidation information storage unit 233 stores information about the emission amount that the user wishes to offset (hereinafter referred to as invalidation information). The invalidation information can include an invalidation ID that identifies the invalidation information, rule specification information, activity specification information, and the emission amount that the user wishes to offset. The invalidation information can also include information (automatic invalidation) that indicates whether or not the management server 2 will automatically perform the invalidation process.

[0023] The user information storage unit 234 stores information about the user (hereinafter referred to as user information). The user information may include information that identifies the user (user ID), the country where the user is located, and the address of the user.

[0024] <Functional section> The input unit 211 can accept input of activity specification information that specifies the activity for which the user wishes to offset, and the amount of emissions related to the activity. In this embodiment, the input unit 211 accepts input of invalidation information. The input unit 211 can transmit screen information that displays an input form for invalidation information to the user terminal 3, and can accept the invalidation information by receiving data for each item of the invalidation information from the user terminal 3. The input unit 211 can register the accepted invalidation information in the invalidation information storage unit 233.

[0025] The emission credit acquisition unit 212 identifies emission credits that can be presented for the invalidation information. The emission credit acquisition unit 212 refers to the offset attribute storage unit 232 and the emission credit storage unit 233 to identify attributes that correspond to the activity specifying information included in the invalidation information, and can acquire emission credit specifying information that corresponds to the identified attributes and the maximum offsettable amount that is equal to or greater than the emissions included in the invalidation information. Furthermore, if rule specifying information is set in the invalidation information, the emission credit acquisition unit 212 can identify attributes that correspond to the rule specifying information and activity specifying information included in the invalidation information from the offset attribute storage unit 232.

[0026] The emission credit acquisition unit 212 can present to the user emission credits that are available in the user's location (address or residence). When an available area is set in the emission credit information, the emission credit acquisition unit 212 reads out user information corresponding to the user from the user information storage unit 234, determines whether the country and / or address included in the read user information is included in the available area, and if it is included in the available area, can present the emission credits to the user. Whether the user's country and / or address is included in the available area can be determined using processing related to a general geographic information system. Note that the available emission credits may be presented to the user by an output unit (presentation unit), which is a part of the function of the emission credit acquisition unit 212.

[0027] The emission credit acquisition unit 212 can present the identified emission credits to the user. The emission credit acquisition unit 212 can, for example, transmit emission credit information to the user terminal 3. Note that the output unit (presentation unit) may present the identified emission credits to the user or transmit the emission credit information to the user terminal 3.

[0028] The emission credit acquisition unit 212 may search for invalidation information that can present the emission credits for the emission credit information. For example, the emission credit acquisition unit 212 can select a combination (which may be one) of invalidation information such that the emission amount (if there is one invalidation information) or the total emission amount (if there are multiple invalidation information) included in the invalidation information is equal to or less than the maximum offsettable amount of the emission credit information. Furthermore, the emission credit acquisition unit 212 can select a combination (which may be one) of invalidation information such that the emission amount (if there is one invalidation information) or the total emission amount (if there are multiple invalidation information) included in the invalidation information is equal to or greater than the minimum offsettable amount. For example, for one emission credit information, the emission credit acquisition unit 212 can select a combination (which may be one) of invalidation information such that the emission amount (or the total amount) included in the invalidation information is equal to or less than the maximum offsettable amount of the emission credit information and equal to or greater than the minimum offsettable amount, from among invalidation information (or combinations thereof) such that the emission amount (or the total amount) included in the invalidation information is equal to or less than the maximum offsettable amount of the emission credit information and equal to or greater than the minimum offsettable amount.

[0029] The emission credit acquisition unit 212 can recommend to the user emission credits that are produced locally for local consumption. For example, the emission credit acquisition unit 212 can read user information corresponding to the user from the user information storage unit 234, and narrow down and present the emission credits to those in which the country and / or address included in the read user information is included in the creation region, or preferentially present those in which the country and / or address is included in the creation region. Furthermore, the emission credit acquisition unit 212 can calculate the distance between the country and / or address and a representative point in the creation region (for example, the capital of the country, the prefectural capital, etc.), and narrow down and present the emission credits whose distance is within a predetermined value, or preferentially present those emission credits whose distance is within the predetermined value. Note that the presentation may be performed by the presentation unit, and the calculation may be performed by the calculation unit.

[0030] In this way, agricultural emission credits and forestry carbon sink emission credits can be procured from businesses or local governments as emission credits (hereinafter referred to as "regional emission credits"), and by matching the procured regional emission credits with businesses within the region where the regional emission credits were created, it is possible to promote the local production and consumption of high-quality credits that also take into consideration the co-benefits to the region and agricultural producers.

[0031] The request receiving unit 213 can receive an invalidation request from the user terminal 3. The request can include information that identifies the invalidation information (for example, an invalidation ID) and information that identifies the emission credit (for example, an emission credit ID).

[0032] The invalidation processing unit 214 performs processing related to invalidating emissions using emission credits (hereinafter referred to as invalidation processing). As the invalidation processing, the invalidation processing unit 214 can, for example, send an invalidation request including information specifying the emission credits and invalidation information to the invalidation server 4. In this case, the operator of the management server 2 will perform the invalidation on behalf of the user. Note that the user may also perform the invalidation himself.

[0033] For invalidation information in which automatic invalidation is "false", the invalidation processing unit 214 can perform the invalidation process in response to an invalidation request from the user terminal 3. For invalidation information in which automatic invalidation is "true", the invalidation processing unit 214 can perform the invalidation process without receiving a request from the user terminal 3. In this case, prior to the invalidation process, the invalidation processing unit 214 can perform the sale process of the emission credits from the holder to the user. Note that the sale process is not described here as it uses the process used in a general trading system.

[0034] Furthermore, when invalidating multiple pieces of invalidation information using one emission right, the invalidation processing unit 214 can perform invalidation processing (for example, sending an invalidation request to the invalidation server 4) so that the activity-specific information and emission amount contained in each piece of invalidation information are included in the invalidation notice.

[0035] <Operation> FIG. 4 is a diagram illustrating the process for revocation information in which the automatic revocation is "false."

[0036] The management server 2 accepts input of invalidation information from the user terminal 3 and registers it in the invalidation information storage unit 233 (S301). The management server 2 acquires attributes corresponding to the rule specifying information and activity specifying information included in the invalidation information from the offset attribute storage unit 232 (S302), and searches the emission credit storage unit 231 for emission credit information that corresponds to the acquired attributes and for which the emission amount of the invalidation information is equal to or greater than the minimum offsettable amount and equal to or less than the maximum offsettable amount (S303). The management server 2 can transmit the searched emission credit information to the user terminal 3 and present the emission credits to the user (S304). Here, the management server 2 may perform a process of selling the emission credits to the user.

[0037] When the management server 2 receives an invalidation request from the user terminal 3 (S304), it performs invalidation processing using the emission credits related to the emission credit information based on the emission credit information and invalidation information specified in the request (S305).

[0038] In this way, the management server 2 can present users with emission credits that can be used to offset emissions. The management server 2 can also invalidate emissions on behalf of users in response to their requests.

[0039] FIG. 5 is a diagram illustrating the processing for invalidation information in which automatic invalidation is "true."

[0040] The management server 2 receives the input of revocation information from the user terminal 3 and registers it in the revocation information storage unit 233 (S321).

[0041] The management server 2 acquires rules and activities corresponding to the attributes of the emission credit information from the offset attribute storage unit 232 (S322). The management server 2 reads out invalidation information corresponding to the acquired rules and activities from the invalidation information storage unit 233, and selects, from the read out invalidation information, a combination of invalidation information such that the total emission amount is equal to or greater than the minimum offsettable amount and equal to or less than the maximum offsettable amount (S323). Here, the management server 2 can select a combination such that the total emission amount is equal to or greater than a predetermined value. Alternatively, the management server 2 may select a combination such that the total emission amount is maximized. The management server 2 can perform invalidation processing so that the activity specification information and emission amount included in each of the invalidation information included in the selected combination are included in the invalidation notice (S324).

[0042] In this way, the management server 2 can automatically execute invalidation processing for emission amounts for which offsetting is desired and received from the user. Therefore, for example, invalidation information for emission amounts less than the minimum offsettable amount can be invalidated all at once. Also, when offsetting emission amounts less than the maximum offsettable amount, invalidation can be performed together with other invalidation information.

[0043] Although the present embodiment has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and equivalents thereof are also included in the present invention.

[0044] For example, in this embodiment, one or more pieces of invalidation information are matched to one piece of emission rights information, but one or more pieces of invalidation information may be matched to multiple pieces of emission rights information. In this case, for example, if there is a remainder (fraction) in the emission amount of the invalidation information in units of the minimum offsettable amount, the remainder may be matched with other emission rights information by the amount of that fraction.

[0045] For example, in this embodiment, the management server 2 automatically performs the invalidation process (acts as a proxy for invalidation), but it may be configured to merely present to the user the emission credits that can be used for invalidation. [Explanation of symbols]

[0046] 1. Owner's terminal 2 Management Server 3. User terminal 4. Invalidation Server

Claims

1. an emission credit storage unit that stores emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and area specification information that specifies areas where the emission credits can be used, in association with each other; an input unit for receiving a request for offset from a user; a user information storage unit that stores the location of the user; a presentation unit that, in response to the request, identifies the emission rights that are stored in the emission right storage unit and that can be used at the location, and presents information indicating the identified emission rights to the user; An information processing system comprising:

2. 2. The information processing system according to claim 1, the emission credit storage unit stores the emission credit specification information, the available area, and the emission credit creation area in association with each other; the presentation unit, in response to the request, identifies the emission rights stored in the emission rights storage unit, the location of which is included in the available area and the location of which is included in the production area, and presents information indicating the identified emission rights to the user; An information processing system characterized by:

3. 2. The information processing system according to claim 1, the emission credit storage unit stores the emission credit specification information, the available area, and the emission credit creation area in association with each other; the presentation unit, in response to the request, identifies the emission rights stored in the emission rights storage unit and whose location is included in the available area, and when presenting information indicating the identified emission rights to the user, presents preferentially those whose location is included in the production area; An information processing system characterized by:

4. an emission credit storage unit that stores emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and regions that generate the emission credits in association with each other; an input unit for receiving a request for offset from a user; a user information storage unit that stores the location of the user; a presentation unit that, in response to the request, identifies the emission rights stored in the emission rights storage unit and whose location is included in the emission rights production area, and presents information indicating the identified emission rights to the user; An information processing system comprising:

5. an emission credit storage unit that stores emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and regions that generate the emission credits in association with each other; an input unit for receiving a request for offset from a user; a user information storage unit that stores the location of the user; a presentation unit that refers to the emission credit storage unit in response to the request and presents information indicating the emission credits to the user, the presentation unit preferentially presenting information indicating the emission credits whose location is included in the emission credit generation area; An information processing system comprising:

6. a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and area specification information that specifies areas where the emission credits can be used, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission rights stored in the emission rights storage unit and whose location is included in the available area, and presenting information indicating the identified emission rights to the user; An information processing method characterized by being executed by a computer.

7. a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission rights stored in the emission rights storage unit and whose location is included in the emission rights production area, and presenting information indicating the identified emission rights to the user; An information processing method characterized by being executed by a computer.

8. a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; a step of referring to the emission credit storage unit in response to the request and presenting information indicating the emission credits to the user, the step of preferentially presenting information indicating the emission credits whose location is included in the emission credit generation area; An information processing method characterized by being executed by a computer.

9. a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and area specification information that specifies areas where the emission credits can be used, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission credits whose location is included in the available area from the emission credit storage unit, and presenting information indicating the identified emission credits to the user; A program that causes a computer to execute the following.

10. a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; In response to the request, identifying the emission credits whose locations are included in the emission creation area from the emission credit storage unit, and presenting information indicating the identified emission credits to the user; A program that causes a computer to execute the following.

11. a step of storing, in an emission credit storage unit, emission credit specification information that specifies emission credits that can offset greenhouse gas emissions and the region where the emission credits are generated, in association with each other; receiving a request for offsetting from a user; storing the location of the user in a user information storage unit; a step of referring to the emission credit storage unit in response to the request and presenting information indicating the emission credits to the user, the step of preferentially presenting information indicating the emission credits whose location is included in the emission credit generation area; A program that causes a computer to execute the following.

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