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Utilizing engineering ingenuity and today’s developing computational fluid dynamics tools, a new classifier design is now available that significantly improves fineness from pulverizers without the heavy costs associated with dynamic classification or any downsides on pulverizer capacities, maintenance, and parasitic power.  Instead, operational flexibility and improved emission control options are enhanced.

Just days before the Energy Department’s advanced energy loan guarantee program funded under 2009 stimulus law is set to expire—and amid an investigation of Solyndra, the California-based solar manufacturer that received the Obama administration’s first loan guarantee—the DOE today finalized a $737 million loan guarantee for the development of a 110-MW concentrating solar power tower facility in Nevada.

The DOE on Friday finalized a partial guarantee for up to a $350 million loan guarantee to support a geothermal power project sponsored by Ormat Nevada. The 113-MW project comprises three geothermal power facilities and could increase Nevada’s geothermal power production by nearly 25% the DOE said.

The renewed flurry of loan guarantees from the DOE this past week included a finalized partial guarantee for a $168.9 million loan to Granite Reliable Power for a 99-MW wind generation project that is expected to become New Hampshire’s largest wind farm.

The Energy Department on Tuesday issued a Record of Decision (ROD) that could allow $450 million of federal funding to be used to help build Summit Texas Clean Eneryg’s 400-MW integrated gasification combined cycle (IGCC) plant planned for construction just west of Midland-Odessa,Texas.

Dominion, the National Renewable Energy Laboratory (NREL), Virginia Tech, Alstom Power, and maritime engineering firm Moffatt & Nichol last week received a two-year $500,000 grant from the DOE to seek out ways to reduce the cost of offshore wind generation by at least 25%.

Progress Energy Carolinas will officially shut down its 177-MW coal-fired W.H. Weatherspoon Power Plant near Lumberton, N.C., at the end of the month—the first such retirement under the utility’s fleet-modernization program that includes disassembly of nearly 30% of the firm’s coal generating fleet in North Carolina.

A new standard devised by the National Fire Protection Association (NFPA) in response to the February 2010 Kleen Energy Systems power plant explosion prohibits the use of flammable gas as a cleaning agent for cleaning the interior of pipes—the practice thought to have caused the blast that killed six workers in Middletown, Conn., and injured nearly 50 others.

In a major development, the U.S. Environmental Protection Agency’s (EPA’s) Office of the Inspector General (IG) today said a key document underpinning the agency’s so-called “endangerment finding”—the determination that greenhouse gases endanger public health and welfare and legally supports agency rules that regulate carbon dioxide emissions—required a “more rigorous peer review than occurred.”

In a Congressional hearing last week, commissioners from the Federal Energy Regulatory Commission (FERC) and Public Utility Commissions of several states differed in their views of just how many coal plants could be shut down and how this may affect grid reliability if the Environmental Protection Agency (EPA) implements several rules it has already finalized or proposed.