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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.

New federal regulations promise to change the fracking landscape in the coming years, perhaps substantially. But technology may be running ahead of the law, as improvements in the fracking process threaten to make some of the new rules unnecessary.

All but unthinkable a decade ago, the U.S. gas industry is gearing up for a major shift toward export of liquefied natural gas. Across the country, projects are afoot that could make the U.S. a serious LNG exporter within the next decade. GAS POWER reviews some of the major players and issues.

A lot goes into the decision to upgrade a simple-cycle plant to combined cycle. Careful planning and analysis can make the difference between a profitable, successful switch and an expensive hassle.

A review of the global gas power industry shows solid growth in gas-fired generation. Here’s a snapshot of who’s doing what, and where.

Not all is well in the realm of PJM, as several states in its jurisdiction have chafed under perceived roadblocks for expanding generation capacity. In April, Maryland fired a shot across the ISO’s bow, as its Public Service Commission ordered the construction of a new gas-fired plant.