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To permit a customer to reduce environmental load without reducing their electric power, a green power supply system is provided which includes a power supply request acceptance part which accepts from a customer a request to supply power having small environmental loads to the customer, a storage-o

To permit a customer to reduce environmental load without reducing their electric power, a green power supply system is provided which includes a power supply request acceptance part which accepts from a customer a request to supply power having small environmental loads to the customer, a storage-of-power-supply-content requesting part which stores the state of power supply from each power generation facility, a green degree calculating part which determines the proportion of power which is supplied from the power generation facility having the small environmental loads, in power supplied to the customer, and a customer-directed green-degree notification part which notifies the customer of the degree of environmental load.

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1. A green power supply system comprising:a power supply request acceptance part which accepts from a customer a request for a power generation facility having small environmental loads to supply power to the customer; a storage-of-power-supply-content requesting part which stores the state of power

1. A green power supply system comprising:a power supply request acceptance part which accepts from a customer a request for a power generation facility having small environmental loads to supply power to the customer; a storage-of-power-supply-content requesting part which stores the state of power supply from each of a plurality of power generation facilities; a green degree calculating part which determines the proportion of power which is supplied from the power generation facility having the small environmental loads in response to the request, in power supplied to the customer according to the state of power supply from each power generation facility; and a customer-directed green-degree notification part which notifies the customer of the proportion of the power which is supplied from the power generation facility having the small environmental loads, in the power used by the customer. 2. A green power supply system according to claim 1, further comprising a third-party-directed green-degree notification part which notifies a third party of the proportion of the power which is supplied from the power generation facility having the small environmental loads, in the power used by the customer.3. A green power supply system according to claim 1, further comprising a green power authentication determining part which performs evaluation and authentication of a customers effort at reducing environmental loads and preventing exhaustion of resources, on the basis of the proportion of the power which is supplied from the power generation facility having the small environmental loads, in the power used by the customer, and a green power authentication part which notifies the customer and the third party of green power authentication information determined by the green power authentication determining part.4. A green power supply system according to claim 1, further comprising a customer-directed power charge notification part which notifies the customer of a power charge which takes into account green subsidy information calculated from the proportion of the power which is supplied from the power generation facility having the small environmental loads, in the power used by the customer.5. A system connected to customers and power generating facilities, comprising:storing means receiving request data from the customers and supplied electric power data from the power generating facilities to the customers and storing the request data, the supplied electric power data and green degrees that are respectively predetermined coefficients for each of the power generating facilities, and calculating means producing a calculation result by comparing the request data with the supplied electric power data and the green degree regarding each power generating facility, and outputting the calculation result.6. The system according to claim 5, wherein the calculating means calculates green degrees assigned to each customer based on the comparison.7. The system according to claim 5, further comprising:informing means transmitting the calculation result to the customer. 8. The system according to claim 5, further comprising:transmitting means informing the calculation result to a third party to authorize the calculation result. 9. The system according to claim 8, further comprising:distributing means transmitting an authorization to the customer from the third party. 10. The system according to claim 5, further comprising:request means transmitting to a power generating facility a request of electric power supplied therefrom based on comparison between supplied electric power and demand of customers. 11. The system according to claim 5, wherein the supplied electric power data from a power generating facility includes a price range.12. The system according to claim 6, wherein the calculation result includes a price in response to the green degree assigned to a customer.13. A server connected to customers and power generating facilities, comprising:a memory which accepts request data from the customers and supplied electric power data from the power generating facilities and stores the request data, the supplied electric power data, and green degrees that are respectively predetermined coefficients for each of the power generating facilities, and a calculating portion which produces a calculation result based on a comparison of the request data with the supplied electric power data and the green degree regarding each of the power generating facilities, and which outputs the calculation result. 14. The system according to claim 13, wherein the calculating portion calculates green degrees assigned to each customer based on the comparison.15. The server according to claim 13, further comprising:an informing portion which transmits the calculation result to the customer. 16. The server according to claim 13, further comprising:a transmitting portion which informs the result to a third party to authorize the result. 17. The server according to claim 16, further comprising:a distributing portion which transmits an authorization to the customer from the third party. 18. The server according to claim 13, further comprising:a request portion which transmits to a power generating facility a request of electric power supplied therefrom based on a comparison between supplied electric power and demand of the customers. 19. The server according to claim 13, wherein the supplied electric power data from a power generating facility includes a price range.20. The server according to claim 14, wherein the calculation result includes a price in response to the green degree assigned to a customer.21. A method for indicating a status of supplied electric power to customers from power generating facilities, comprising the steps of:accepting request data from the customers and supplied electric power data from the power generating facilities; storing the request data, the supplied electric power data, and a green degree that is a respectively predetermined coefficient for each of the power generating facilities, comparing the request data with the supplied electric power data and the green degree corresponding to each of the power generating facilities; calculating a green degree of each customer based on the comparison, and outputting a result of calculating the data. 22. The method according to claim 21, wherein the outputting step comprises:transmitting the calculation result to the customer. 23. The method according to claim 21, wherein the outputting step comprises:transmitting the calculation result to a third party to authorize the result. 24. The method according to claim 23, further comprising a step of:distributing an authorization to the customer from the third party. 25. The method according to claim 21, further comprising steps of:transmitting to a power generating facility a request for electric power supplied therefrom based on a comparison between supplied electric power and demand of customers. 26. The method according to claim 21, wherein the supplied electric power data from a power generating facility includes a price range.27. The method according to claim 21, wherein the calculation result includes a price in response to the green degree for a customer.