Amarillo, Texas [RenewableEnergyAccess.com] A request for proposals (RFP) for 40,500 megawatt-hours (MWh) of annual renewable energy or renewable energy certificates (RECs) to be generated from renewable technologies other than wind turbines has been issued by Xcel Energy for its customers in the South Plains and Panhandle of Texas, eastern and southeastern New Mexico, the Oklahoma Panhandle and southwest Kansas. The RECs must be available by Sept. 30, 2010.Eligible technologies are solar, hydropower, geothermal, fuel cells that are not fossil-fueled, landfill gas and anaerobically digested waste biomass, and biomass — including fuels such as agricultural and animal waste, small diameter timber, salt cedar and other woody vegetation removed from watersheds or river basins in New Mexico. Notice of Intent to Bid forms are due April 21; proposals are due June 5. The company’s objective is to complete the evaluation, identification and negotiation of selected proposals by mid-2007 at the latest. Bidders may propose to supply all or any of the requested 40,500 MWh as (1) energy and associated RECs generated and delivered on an as-available basis from an eligible technology; (2) capacity, energy and associated RECs generated on a firm basis from an eligible technology; (3) RECs without associated energy, subject to provisions of New Mexico regulatory requirements at 17.9.572.13 NMAC. Generators that sell both energy and RECs must deliver to the Southwestern Public Service Company (SPS) transmission or distribution system in New Mexico or Texas. Generators that sell only RECs without associated energy must be located in New Mexico.