A lot of wave and tidal power systems being proposed these days will be capable of generating megawatts of power. Puget Sound Tidal Power is aiming for 10 to 15 kilowatts with its turbine--barely enough for five homes--but the lower power output also means a lower price tag

Rentricity, a start-up in New York City, has come up with a hydroelectric generator that lets municipal water facilities generate power. Pressurized water from the facility passes through a turbine, and the turbine produces electricity. The water subsequently comes out of your faucet

You can make solar panels with impure silicon, claims Roy Johnson. You just have to know how to isolate the undesirables. CaliSolar has come up with a way to make solar cells out of upgraded metallurgical silicon, according to Johnson, the company's CEO. Electrical grade silicon is 99.99999 plus percent pure, but it costs $150 to $250 a kilogram. Only around 70,000 tons are manufactured worldwide. By contrast, upgraded metallurgical silicon is only 99 percent or so and goes for $20 to $50 a kilo. Approximately 1.2 million tons get made a year. re. If CaliSolar can mass manufacture solar cells with a 14 percent efficiency these solar cells will cost far less than the 16 percent efficiency cells that are common on the market today.

The viability of electric cars is set to take a giant leap forward after energy giant EDF announced it is to install 250 recharging stations across the UK by April 2008.

Large-scale power storage is crucial to our energy future: the Electric Power Research Institute, the U.S. utility industry's leading R&D consortium, says that storage would enable the widespread use of renewable power and make the grid more reliable and efficient.

As part of its effort to get its first cars out of the door, Tesla Motors is putting its battery business on ice for a bit.

Trials of a unique Irish ocean wave energy converter, the Wavebob, yielded exciting results this week with Wavebob Ltd's announcement that it's prototype device is now producing electricity.

Engineers last week unveiled the largest wind turbines ever connected to the UK national grid: two massive generators that tower 300ft over the North Sea 15 miles from the Scottish coast. Now the project's backers say they are preparing plans to construct 200 of these huge turbines, creating a gigantic wind farm with the capacity to provide power for an entire city.

Gordon Brown is being urged by a Cabinet colleague to reduce Britain's commitment to climate change goals on renewable energy, it has been reported.

The Scottish Government granted ScottishPower planning permission for what the company says would be the world's largest wave farm. The announcement is a milestone for the $20.4 million project which will see four floating generators, designed to convert wave movement into electricity, positioned off the coast of the new facility's sister site - the European Marine Test Centre also in Orkney. Expected to be operating by 2008, the 160-metre Pelamis Devices (Sea Snakes), are anticipated to provide around 3 megawatts (MW) of electricity.

U.S Deputy Secretary of Energy Clay Sell today announced that the Department of Energy (DOE) awarded the first three large-scale carbon sequestration projects in the United States and the largest single set in the world to date.

Clipper Windpower Plc (LON:CWP) announced today that it will develop the world's largest offshore wind turbine rated at 7.5 MW. It has established a Centre of Excellence for Offshore Wind in Blyth, United Kingdom

BASF, RWE Power and the Linde Group agreed recently to develop a new processes for CO2 capture from combustion gases in coal-fired power plants. The collaboration will comprises the construction and operation of a pilot facility at the lignite-fired power plant of RWE Power AG in Niederaussem/Germany

Presently the issue of wind power is affecting communities throughout New York state. The lines have been drawn between the wind companies and those who support industrial wind power against those who object to this enormous threat to their quality of life.

Householders have all but abandoned their efforts to go green by using renewable technologies such as solar power, because the government's tightening of the rules has made grants almost impossible to obtain. As a result, the government's much-criticised Low Carbon Buildings Programme (LCBP) will not run out of funding for 15 years, even though the money was supposed to be used up by mid-2008, according to a Labour MP.

That's why a small server-farm company called AISO.net (for "affordable Internet services online") has gone completely off the grid. Located 80 miles southeast of Los Angeles in the desert hamlet of Romoland, AISO.net has flanked its 2,000-square-foot building with two banks of ground-mounted solar panels, which generate 12 kilowatts of electricity. Batteries store the juice for nighttime operation.

NRG Energy, Inc. and South Texas Project Nuclear Operating Company filed the first application for a Combined Construction and Operating License with the NRC in nearly 30 years. NRG proposes to build and operate two new nuclear units at the South Texas Project nuclear power station site. The total rated capacity of the new units will exceed 2,700 MW.

When there is a blackout, your solar power system will probably go out too. That's because most systems are tied to the electrical grid.