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An aerial view of the Bullitt Center, rooftop solar array under construction, September 20...

The world of architecture figuratively doffed its cap to Earth Day on Monday with the opening of the Bullitt Center in Seattle. The Bullitt Center aims to meet the rigorous Living Building Design Challenge, which looks beyond design criteria and scrutinizes a building's green credentials, including energy self-sufficiency, over the course of a year in use. But more significantly, its developers claim that the Bullitt Center is the greenest commercial building in the world.  Read More

Philip's Coen Liedenbaum shows off the 200-lm/W prototype LED tube

Back-to-back announcements from Green Ray LED and Philips show signs that there is now clear water between LED lights and fluorescent lights so far as energy efficiency is concerned. The proverbial glow of commercially available lights with 200 lumens per watt efficiency can now be clearly seen radiating over the horizon.  Read More

Amonix solar panels break through the 33-percent efficiency barrier

Embattled photovoltaic solar power manufacturer Amonix announced on Tuesday that it has broken the solar module efficiency record, becoming the first manufacturer to convert more than a third of incoming light energy into electricity – a goal once branded "one third of a sun" in a Department of Energy initiative. The Amonix module clocked an efficiency rating of 33.5 percent.  Read More

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