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Five U.S. grid operators last week jointly urged the U.S. Environmental Protection Agency (EPA) to reconsider strict compliance deadlines proposed for a suite of rules because they feared "accelerated" generation retirements as owners assessed the costs of complying with them. The grid operators also asked the EPA to consider keeping some plants online if they met certain conditions, because taking them out of service would affect system reliability.

Power demand for the Electric Reliability Council of Texas (ERCOT) control area hit three consecutive records in the past week—reaching 68,294 MW on Aug. 3—forcing the grid operator to cut power to large industrial users to avoid rolling blackouts. It was the second time this year and only the fourth in more than two decades that the grid operator has been forced to implement such measures.

Eight days ahead of schedule, China on Sunday put into commercial operation Ling Ao Unit 4, the second facility of the Ling Ao Phase II nuclear power plant. Unit 4, owned by the state-owned China Guangdong Nuclear Power Co. (CGNPC), brings the number of reactors at the Ling Ao/Daya Bay Nuclear Power Base to six—making it China’s largest nuclear complex to date.

The Tennessee Valley Authority (TVA) on Monday said it would delay construction at Watts Bar Unit 2 and delay commercial operation of the facility from the previously anticipated late 2012 timeframe into 2013, owing to a licensing delay, safety and environmental issues, and a transition in the leadership of its nuclear generation development and construction (NGDC) group.

The Department of Energy (DOE) on Thursday finalized a $967 million loan guarantee for a solar photovoltaic facility in Arizona. On Tuesday, it also awarded $7 million for independent cost analyses supporting research and development for fuel cells and hydrogen storage systems.

Dynegy has restructured to create separate coal-fired and gas-fired power generation units.

On Friday, the Blue Ribbon Commission—Energy Secretary Steven Chu’s 15-member panel assigned to recommend a new plan for managing the back end of the nuclear fuel cycle—released a draft report for public comment. The public comment period is due to end Oct. 31, 2011, and a final report is due to Secretary Chu before Jan. 29, 2012.

The city of Chicago on Thursday reintroduced an ordinance that could shut down two coal-burning power plants in the city owned by Midwest Generation, an Edison International subsidiary.

The UK plans to shutter its Sellafield Mixed Oxide (MOX) plant (SMP) as soon as it is practically feasible because the March 2011 Japanese quake and subsequent nuclear crisis at Fukushima have changed the facility’s commercial risk profile, the Nuclear Decommissioning Authority (NDA) said today.

The Smart Grid Interoperability Panel (SGIP)—a consensus-based group of more than 675 public and private organizations created by the National Institute of Standards (NIST)—has made the first six entries into its new Catalog of Standards, a technical document that is expected to serve as a guide for smart grid–related technology.