San Diego Gas and Electric adds 235 MW of solar power to its portfolio

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San Diego, June 20, 2011 San Diego Gas & Electric signed two new renewable contracts one with a unit of San Diego-based enXco and the other with Arlington Valley Solar Energy II, for a combined total capacity of up to 237 MW of solar energy.

The Catalina Solar project to be developed by enXco will have the capacity to generate up to 110 MW from the sun, starting with delivery of 50 MW by the end of next year and the remaining 60 MW by June 2013.

The 25-year contract with Catalina Solar, LLC calls for a ground-mounted photovoltaic system to be built in Kern County on property in the Rosamond/Tehachapi area. It will produce enough clean energy to power about 35,000 homes and will offset about 74,000 metric tons of greenhouse gas emissions, helping to improve overall air quality in California in line with the state’s environmental mandates.

The project is expected to connect to the statewide power grid via Southern California Edison‘s Tehachapi Renewable Transmission Project. The TRTP, like SDG&E‘s Sunrise Powerlink, is a CPUC-approved transmission upgrade built specifically to deliver green energy to the state’s power grid from remote areas where the energy is produced.

The agreement with Arlington Valley Solar Energy II calls for up to 127 MW to be generated by ground-mounted PV panels at a solar farm to be built in Maricopa County, Ariz., with delivery of at least 25 MW by the end of the first quarter of 2013, and another 25 MW delivered every two months until the project is built out.

SDG&E will receive both the power and the renewable energy credits from this project, which will connect at the same substation in Arizona where SDG&E’s Southwest Powerlink begins. The green energy produced will be scheduled into the California Independent System Operator’s statewide grid.

Both contracts require approval by the California Public Utilities Commission. Since January, SDG&E has signed 12 new renewable contracts, for a combined total of 1,035 MW.

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The Clarion Energy Content Team is made up of editors from various publications, including POWERGRID International, Power Engineering, Renewable Energy World, Hydro Review, Smart Energy International, and Power Engineering International. Contact the content lead for this publication at

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