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Dominion to Place Over 1,200 MW of Older Generating Capacity into "Cold Reserve"

LCG, January 19, 2018--Dominion Energy announced Wednesday that it plans to place nine older, inefficient electric generating units located at five power plants in Virginia into a cold reserve. The units have a combined capacity of 1,208 MW but account for less than one percent of the company???s generation. The nine units could be restarted if necessary, according to the company.

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TEP Plans to Add New Wind Energy Project

LCG, January 18, 2018--Tucson Electric Power (TEP) plans to issue a request for proposals (RFP) today for the design and construction of new wind energy resources to provide 100-150 MW of wind energy from resources that interconnect with TEP's system or deliver power through a third-party firm transmission service.

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Industry News

Stirling Energy Systems Add Major Solar Project in California

LCG, September 8, 2005--Arizona-based Stirling Energy Systems (SES) announced yesterday that San Diego Gas and Electric Company (SDG&E) has contracted to purchase between 300 and 900 MW of solar energy from a large-scale, solar project to be located in Southern California's Imperial Valley.

The solar power plant will include 12,000 Stirling solar dishes distributed over three square miles. The dish technology tracks the sun and reflects the sun's energy onto the receiver of a Stirling engine, where the energy heats and expands hydrogen gas. The expanding gas drives a piston, crankshaft and drive shaft assembly (without igniting the gas), which in turn drives a generator.

SES has six dishes operating at the National Solar Thermal Test Facilities at Sandia National Laboratories in New Mexico. The dishes at the Sandia test facility can operate at nearly a 30 percent peak efficiency while delivering grid-ready alternating current.

SDG&E will purchase all of the output over the initial, 20-year term of the agreement. SES has options on two expansion phases that would increase the capacity up to 900 MW.

This is the second major project announced recently by SES. In August, SES announced the execution of a 20-year contract with Southern California Edison to purchase 500 to 850 MW of solar power. The project site is in the Mojave Desert near Victorville, California. The initial, 500-MW phase is planned to include a 20,000 dish array, with a construction period estimated to require four years. Both contracts are subject to approval by the California Public Utilities Commission.

The State of California's Renewables Portfolio Standard (RPS) Program requires each utility, such as SDG&E and Southern California Edison, to increase its procurement of eligible renewable generating resources by 1% of load per year to achieve a 20% renewables goal. The RPS Program was passed by the Legislature and is managed by California's Public Utilities Commission and Energy Commission.

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