2010年4月15日 · To encourage more customers to use solar, Xcel launched a program two years ago that offered customers a $2.50-per-watt renewable energy credit and a $2-per-watt rebate …

The Utility Solar Assessment (USA) Study, produced by clean-tech research and publishing firm Clean Edge and green-economy nonprofit Co-op America, provides a comprehensive …

The problem: Walker Industries and the Region have tried - so far unsuccessfully - to turn that landfill's gas into cash ever since it closed eight years ago. "I've got to admit, the project …

The SRP EarthWise Solar Energy program is designed to help reduce the cost of installing a new solar electric or solar water heating system for residential and business customers who invest …

Much of the industryÂ’s effort is aimed at making LED lamps that emit as much light as a 60- or 75-watt incandescent bulb. Cree, a leading maker of LEDs, showed a new version of its LED …

The researchers claim that nanotechnology, in combination with sunlight concentrated through mirror systems, can bring about the creation of the world's most energy-efficient solar cell, with …

That, along with potential demand gains from a new solar subsidy in China, would further lower costs for Chinese manufacturers, who already boast processing costs of 90 cents to $1 per …

The school broke ground on its new 1,800-watt, 50-foot-high wind turbine project on May 20 and celebrated itÂ’s completion with a ribbon-cutting ceremony on June 15.

Currently, he uses a 500-watt generator and a 200-watt generator, along with four solar panels, a 170-watt panel and three 20-watt panels. He built all of them himself with parts salvaged from …

And with cost leader First Solar bringing panel manufacturing costs down to 76 cents per watt and reporting conversion efficiency — the proportion of sunlight received that is converted to …