INFORMATION PROCESSING DEVICE, SERVER DEVICE, ELECTRIC POWER TRANSACTION SETTLEMENT SYSTEM, SETTLEMENT METHOD FOR ELECTRIC POWER TRANSACTION, AND INFORMATION PROCESSING METHOD

Provided is an information processing apparatus including a read/write unit configured so as to be capable of reading, via contactless communication, electronic money information from an IC card capable of storing the electronic money information or an electronic appliance equipped with functions of the IC card and of writing the electronic money information into the IC card or the electronic appliance, and a settlement processing unit configured to write electronic money information of a fee in accordance with a power sale amount via the read/write unit into the IC card or the electronic appliance immediately after conclusion of a power sale contract.