Sun Valley Energy Project
Power Plant Licensing Case

Docket Number:

05-AFC-03 (Application For Certification)

Project Status: Terminated October 19, 2015

Committee Overseeing This Case:

Karen Douglas, Commissioner, Presiding Member

Robert B. Weisenmiller, Commissioner, Associate Member


Hearing Officer: Ken Celli

Key Dates


On December 1, 2005, Valle del Sol Energy, LLC (VSE), a wholly-owned subsidiary of NRG Energy, submitted an Application for Certification (AFC) to construct and operate a simple cycle (peaking) power plant, the Sun Valley Energy Project (SVEP), near Romoland, in unincorporated Riverside County. The SVEP would be a nominal 500 megawatt (MW) simple-cycle power plant, consisting of five General Electric LMS100 natural gas-fired turbine-generators and associated equipment.

The SVEP is designed as a peaking facility to meet electric generation load during periods of high demand, which generally occur during daytime hours, and more frequently during the summer than other portions of the year. The project is expected to have an annual capacity factor of approximately 20 to 40 percent, depending on weather-related customer demand, load growth, hydroelectric supplies, generating unit retirements and replacements, the level of generating unit and transmission outages, and other factors.

The SVEP site is located at 29500 Rouse Road, Romoland, Riverside County, California. The area that includes the project site is zoned Manufacturing-Service Commercial. The project site is an approximately 20-acre parcel currently in agricultural use. NRG has entered into a lease option agreement for the project site. The lease option will be assigned to and exercised by VSE. The SVEP would use reclaimed water for cooling and other power plant processes and for site landscape irrigation. The Eastern Municipal Water District (EMWD) would supply, on average, approximately 851 acre-feet per year of reclaimed water for the project. This water would be supplied to the SVEP site through a 12-inch diameter line direct-connected to the existing 12-inch reclaimed water supply pipeline located within the utility easement on the north side of the project site.

Potable water for drinking and sanitary uses would be provided through a 4-inch diameter connection to the EMWD water line within the utility easement on the north side of the project site. Sanitary waste water would be discharged to a local sanitary sewer line that runs in a utility easement within the project site. Process waste water, concentrated beyond discharge limits to the reclaimed water system, would be discharged via a 0.75 mile-long line to a separate EMWD non-reclaimable wastewater line then routed through interceptor lines to the Orange County Sanitation District wastewater treatment plant, that discharges to an ocean outfall.

The SVEP would be connected to Southern California Edison's (SCE) electrical system at the existing Valley Substation, which is located approximately 600 feet north of the project site. This connection would require approximately 600 feet of 115-kilovolt transmission line and one off-site transmission tower to be located within SCE's transmission line corridor near the connection point at the southern end of the substation. Natural gas would be supplied to the SVEP via a 750-foot-long pipeline within the SVEP parcel to a connection with one or more of Southern California Gas Company (SoCalGas) high-pressure gas pipelines located at Menifee Road east of the project site.

Energy Commission Facility Certification Process

The California Energy Commission is the lead agency (for licensing thermal power plants 50 megawatts and larger) under the California Environmental Quality Act (CEQA) and has a certified regulatory program under CEQA. Under its certified program, the Energy Commission is exempt from having to prepare an environmental impact report. Its certified program, however, does require environmental analysis of the project, including an analysis of alternatives and mitigation measures to minimize any significant adverse effect the project may have on the environment.

For Questions About This Siting Case Contact:

For Questions About Participation In Siting Cases Contact:

Public Advisor
California Energy Commission
1516 Ninth Street, MS-12 Sacramento, CA 95814
Phone: 916-654-4489
Toll-Free in California: 1-800-822-6228

News Media Please Contact:

Media & Public Communications Office
Phone: 916-654-4989

Proceeding Information



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