Temporary power supplier Aggreko is to help Japan keep its electricity supply up and running after last month's devastating earthquake.The Tokyo Electric Power Company Incorporated (TEPCO) has signed a letter of intent with Aggreko stating that it intends, subject to negotiation of definitive terms, to award Aggreko a contract for the rental of 200 megawatts (MW) of emergency power. The contract, half of which will be generated from gas and half from diesel, would be for a minimum one year term.Power plants will be installed at sites in the Tokyo Bay area and Aggreko's plant should be in action in June."Aggreko is pleased it is able to be of assistance to the country at this very difficult time," said the company's chief executive Rupert Soames.RG