Renewables

California’s drive to add flexibility to its grid in response to expanding renewable generation took another step forward in September as NRG Energy commissioned two new fast-start units at its El Segundo Energy Center near Los Angeles. The two units, with a combined 550 MW capacity, represent the second Siemens Flex-Plant to go into commercial […]

As variable generation from wind and solar power increases and peak loads grow and become more volatile, the U.S. electric grid will rely more and more on gas-fired power to maintain system flexibility. Often at the core of these gas-fired power plants are aeroderivative turbines, whose fast-start and cycling capabilities allow for frequent on-again, off-again […]

A new 2-MW power-to-gas (P2G) plant inaugurated by Germany’s E.ON in late August will convert excess wind energy into synthetic natural gas that can then be fed into the regional gas grid, where it can be

Courtesy: Business Wire The Ivanpah Solar Electric Generating System (ISEGS) reached a notable milestone on Tuesday, Sep. 24, 2013, when its Unit 1 turbine generator was synchronized to the California power grid for the first time. The project has been under construction since Bechtel Corp. began site preparation on Oct. 8, 2010. Jointly owned by […]

Pressures on competitive power markets have fueled substantial declines in plant valuations over the past five years, with coal plants taking the brunt of the damage. That’s the conclusion of a new report from financial services firm Fitch Ratings released on Wednesday. The report, which calculated the net present value of plants across the country […]

A compromise offered by the Solar Energy Industries Association (SEIA) on Monday to resolve a worsening trade dispute between U.S. and Chinese solar industries proposes the creation of a Chinese fund to help grow the U.S. market and safeguards to offset surges of Chinese solar modules. The move comes as Chinese provisional anti-subsidy duties on […]

Much attention has been devoted recently to the increased cycling that is necessary in fossil plants as more renewable capacity is added to the grid, but data on the precise impacts has been slight. Now, a new study from the National Renewable Energy Laboratory (NREL) aims to correct that. The key findings: While cycling would increase […]

The Environmental Protection Agency (EPA) on Friday issued a revised proposal to curb carbon emissions from new power plants that sets separate standards for new gas-fired and coal-fired power plants. The agency also revealed it is developing new carbon standards for existing power plants. Separate Standards for Coal and Gas and Forthcoming Existing Plant Standards […]

Ending a tumultuous battle over the future of electricity in the state, the California Legislature passed a wide-ranging revision of its ratemaking structure last week. Despite the contentious subject, the bill, AB 327, was approved by a broad bipartisan majority and garnered widespread support from the state’s three investor-owned utilities, the residential solar industry, and […]

China’s historical solar photovoltaic (PV) price advantage is driven by economies of scale and supply chain development—not direct government subsidies or low labor costs, as is the prevailing belief—suggests a new study from the Department of Energy’s National Renewable Energy Laboratory (NREL) and the Massachusetts Institute of Technology (MIT). The study recently published in the […]