POWERnews

Unexpected steam generator tube wear that prompted the indefinite shutdown of Southern California Edison’s (SCE’s) San Onofre Nuclear Generating Station (SONGS) in January was caused by excessive tube vibration, company executives confirmed at a community meeting on Monday. Officials from the Nuclear Regulatory Commission (NRC) meanwhile pinned the tube failures on a flawed computer model used to design the steam generator components.

Though many have touted the vast promise of ocean energy, it has been slow to reach commercial scale, especially in North America. Today, offshore generating technologies are less of an impediment to commercial project fruition than permitting, financing, and transmission challenges, but small changes are beginning to brighten the outlook for the newest power industry sector.

The U.S. Senate on Wednesday narrowly rejected a measure that would have overturned the Environmental Protection Agency’s (EPA’s) Mercury and Air Toxics Standards (MATS), voting 46 to 53 to defeat the resolution introduced by Sen. James Inhofe (R-Okla.).

In an effort to slash its greenhouse gas (GHG) emissions, the California Department of Water Resources (CDWR) last week said it would terminate a contract to buy power from a units of NV Energy’s Reid Gardner coal-fired power plant in Nevada and instead rely on power from Northern California Power Agency’s (NCPA) 255-MW Lodi combined cycle natural gas-fired plant, which is under construction.

San Diego Gas & Electric (SDG&E) on Monday completed and put into service its 500-kV Sunrise Powerlink, a $1.9 billion transmission line linking San Diego to the renewables-rich Imperial Valley.

A host of new technologies are ready to transform the energy system, offering the potential to drastically reduce carbon emissions, enhance energy security, and generate a huge investment return, the International Energy Agency (IEA) said in a new energy technology publication launched on Monday.

In a long-running labor dispute, Entergy Corp. on June 7 locked out union workers at its Pilgrim nuclear plant 38 miles southeast of Boston near Plymouth, Mass., bringing in workers from its other plants and contract workers to operate the 685-MW unit along with management officials.

Natural gas-fired generation enjoyed a competitive advantage through this past winter and spring as historically low prices for the commodity combined with mild weather and relatively light demand to turn the dispatch stack on its head and favor gas over coal. That advantage is narrowing as summer demand approaches. A senior market analyst with Bentek Energy expects coal-fired generation to be advantaged at least until the fall shoulder season.

A three-judge panel of the U.S. Court of Appeals for the District of Columbia, Circuit ruled unanimously on Friday that the Nuclear Regulatory Commission (NRC) erred in deciding that spent nuclear fuel (SNF) from the nation’s power plants could be stored as long as 60 years after a plant’s operating license expires.

Duke Energy and Progress Energy received conditional approval for their merger from the Federal Energy Regulatory Commission (FERC) on June 8. The companies plan to close their merger, which would create the nationís largest utility, by the targeted date of July 1.