Archive for November, 2009

Copenhagen’s bike-powered Christmas LEDs

Monday, November 30th, 2009

By now, you’ve probably heard the buzz about LED Christmas lights. For a few dollars more than incandescent string lights, they greatly reduce the risk of fire, increase twofold (or more) the longevity of your holiday lighting, and cut the energy use of your seasonal decorations by as much as 90%. Given all of their [...]

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EU sets zero as target for buildings’ net energy use

Tuesday, November 24th, 2009

Last week, the European Union negotiated a new set of guidelines that will dramatically improve the energy efficiency and carbon footprint of new buildings. According to the new regulations, all buildings constructed after 2020 will need to operate at very high efficiencies and draw most of the power they consume from on-site or proximate renewable [...]

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LEDs hit the Biggest Little City

Friday, November 20th, 2009

The iconic Reno Arch spanning Virginia Street in Reno, Nevada, is now illuminated by LEDs. On Tuesday of this week, Reno’s city officials celebrated the exchange of 2,076 11W incandescent lights for 2.5W LEDs. This will reduce the sign’s electricity usage by 9,2011 kW a year. The City of Reno has adopted an Energy Efficiency [...]

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