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Nissan Expands Arizona EV Plans: Nissan has promised to supply more than “a couple hundred” highway-legal electric vehicles to the Phoenix area, as well as the previously announced Tucson area, for public and private fleets by the end of 2010. Ecotality now also plans to expand its chain of charging stations there. — CNET’s Planetary Gear

Green vs. Green: Policymakers have underestimated the environmental impact of projects that are otherwise green. Do we have to sacrifice wildlife for clean energy? — Washington Post

Obama’s Rail Pitch: A fact sheet from the White House on high-speed rail today stresses that high-speed rail travel is “green,” because it uses less energy per passenger-mile. But developing all of the ten potential corridors would cut emissions by only about 3 million tons per year — around half of what a typical coal plant belches every year. — WSJ’s Environmental Capital

Cadillac Volt Coming in 2011?: An unnamed “well-placed source” has said GM aims to roll out the extended-range electric Cadillac Converj by the end of 2011. There are at least three good reasons to go ahead with it, but GM denies the plan. — Wired’s Autopia

Solar Earnings Preview: Solar companies have been cutting production and lowering outlooks to reflect slumping demand. But the sector hopes to see a boost as governments increase spending or offer subsidies for solar energy. What’s ahead for First Solar, LDK, Yingli and Suntech? — Wall Street Journal