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The EPA, determined to regulate U.S. carbon dioxide emissions under the Clean Air Act, found that the low limits set by the Act for any “regulated pollutant” led to, in the EPA’s words, “absurd” results. Undeterred, the EPA developed the “Tailoring Rule,” which reinterprets the Act to apply to only larger emissions sources. Texas eloquently rejected the EPA’s legal gymnastics.

California, New Mexico, and three Canadian provinces—partners of the Western Climate Initiative (WCI)—last week released a detailed plan for a regional cap-and-trade program to curb greenhouse gases (GHG) starting in January 2012. If the plan reaches fruition, it would be three times larger than a program under way in 10 eastern states.

Hawaii’s Public Utilities Commission (PUC) last week denied a request by Hawaiian Electric Co. (HECO) to extend pilot testing for its advanced metering infrastructure (AMI) project to 5,000 more smart meter because of cost concerns. The move poses a major hurdle for the utility’s overall smart grid initiative.

Only 700 MW of wind power were added in the U.S. during the second quarter of 2010—a drop of 57% and 71% when compared to second quarter numbers from 2008 and 2009, respectively, the American Wind Energy Association (AWEA) reported last week.

New York state and Pennsylvania’s Department of Environmental Protection (PADEP) plan to sue Homer City Station, a 1,884-MW coal-fired power plant in Pennsylvania, for its alleged contributions of the region’s sulfur dioxide emissions.

The Department of Energy last week finalized a $117 million loan guarantee for a 30-MW Hawaiian wind power plant, and this week it said it would offer a $17.1 million loan guarantee to support construction of a 20-MW energy storage system using lithium-ion batteries.

The cover of the July 5 special History Issue of TIME magazine features Thomas Edison holding a glowing bulb. A series of articles celebrate Edison’s many inventions and closes with this: “Edison’s laboratories were the forerunners of the interactive technological think tanks of Apple, Google, and Microsoft.” Though the sentiment lauds Edison, I think it’s an overstatement.

This May, following two years of construction, Siemens Energy put into operation Irsching 5, an 847-MW advanced combined-cycle power plant near Ingolstadt, Germany. The plant’s owner, Gemeinschaftskraftwerke Irsching GmbH—a joint venture of E.ON, Mainova, and HEAG Südhessische Energie—features two SGT5-4000F gas turbines, one SST5-5000 steam turbine, three hydrogen-cooled generators, electrical systems, and Siemens’ SPPA-T3000 instrumentation and control system.

Nearly a quarter-century after the Chernobyl nuclear power station disaster in Soviet Ukraine, Russia has been making deals with energy-starved nations all over the globe to help them build new nuclear power plants using Russian second-generation reactor technology.

While the U.S. awaits congressional action on a cap-and-trade program that could possibly be limited to just the utility sector, Canada is moving, starting in 2011, to phase out older coal power plants and replace them with natural gas–fired plants. The announcement, made this June by Environment Minister Jim Prentice prior to the G8 and G20 summits, could have serious implications for coal-fired generators in the country.