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In support of the State of California Renewables Portfolio Standard, the California ISO (CAISO) has worked with Participating Transmission Owners, the California Energy Commission, the California Public Utilities Commission, industry experts, adjacent control areas and owners/developers of renewable resources to identify integration issues and solutions for the integration of large amounts of renewable resources into the CAISO Control Area.

That is one reason for the rise of renewable energy middlemen like Clean Currents in Washington, D.C. The company bundles small businesses that want to buy wind power credits and submits a collective application to a utility. The businesses get better rates, and Clean Currents pockets a 1 percent commission.

Osaka Gas Co. of Japan announced that an energy-saving house in Saito Asagi, Ibaraki City, Osaka Prefecture, equipped with a "double-generation system," which is made up of a co-generation system using a household-type polymer electrolyte fuel cell and a solar photovoltaic system, would be open to the public. The house will remain open until the end of May 2008.The fuel cell is rated at one kilowatt and simultaneously generates power and heat, with the heat being effectively utilized for heating water. The combination of the 4-kilowatt photovoltaic system and this fuel cell enables the average household to reduce primary energy consumption by about 55 percent and carbon dioxide emissions by about 70 percent over conventional systems.Moreover, although blinds are typically set inside of windows, the blinds in this house are set outside of windows in order to cut sunlight in the summer, while absorbing thermal energy from sunlight in the winter and transmitting it to the specially designed walls; thus, energy requirements for heating and cooling are reduced. With the latest gas facilities and home-security systems, visitors can enjoy experiencing the exceptional functionality this concept house offers.

Germany's first offshore wind power park, Alpha Venture in the North Sea, has begun the gradual commissioning of the first three of its total 12 turbines, a spokesman for the venture said on Wednesday.