In the majority (more than 90%) of newly-installed wind turbines in the world, generation is from a doubly-fed slip-ring induction generator (DFIG). There are drawbacks to the use of slip-ring generators, particularly the additional cost and bulk of a machine which incorporates slip-rings and the need to maintain brush-gears including replacement of the brushes on a regular basis.

Thanks to the efforts of more than 35 manufacturers, a wide range of computer products now include internal power supplies that are at least 80% efficient, that is, less than 20% of the power fed into them is lost as heat

renewables generating 25% of electricity by 2030

A $50 billion Strategic Energy Fund, paid for in part by oil companies, to fund investments in alternative energy. The SEF will finance one-third of the $150 billon ten-year investment in a new energy future contained in this plan;

10 "Smart Grid City" partnerships to prove the advanced capabilities of smart grid and other advanced demand-reduction technologies, as well as new investment in plug-in hybrid vehicle technologies

Algae require only sunlight, water and carbon dioxide to grow. They can quadruple in biomass in just one day. And, what's more, they suck up harmful pollutants such as nitrogen from waste water and carbon dioxide from power plants as they grow.  Some strains of algae contain over 50% oil and an average acre of algae grown today for food and pharmaceutical industries can yield around 19,000 litres of biodiesel, compared to just 265 litres for one acre of soya beans or 1,600 litres of ethanol for an acre of corn.

What should China do to satisfy its insatiable thirst for energy? Go back to their amazing energy efficiency policies of the 1980s and early 1990s.

Also the solar units are so light weight that they can be suspended on steel cable lines rather than each having their own base connected to the ground. This rigging system allows for minimal land use disruption, 60 times less steel material and faster installation. The cables double as a control mechanism to align the units toward the sun.

SDG&E says that nearly 80,000 of its customers lost power, but by October 27th, power had been restored to all but 6,700 customers. Over the weekend, the utility expected to restore power to 97% of those affected, leaving only 2,400 without power

On Monday, October 22nd, the state's electrical grid operator—the California Independent Systems Operator (ISO)—declared an emergency when the Santiago Fire in Orange County caused two more high-voltage transmission lines to trip off-line. To avoid reduce stress on the power grid, the California ISO asked two utilities—Southern California Edison (SCE)and the San Diego Gas and Electric Company (SDG&E)—to reduce their electrical load by a total of 500 megawatts.

gives the utility more than 1 gigawatt of wind energy under contract

Anyone thinking that "going green" will be simple and quickly profitable, even after the low-hanging fruit of highly-attractive projects is exhausted, ought to read this article

the current price of a REC is too low to encourage the construction of more renewable power projects.

Project Better Place will focus in phase one on establishing a repeatable infrastructure to support electric vehicles, implementing electric recharge grids through local operating companies in multiple countries. They will establish a widespread grid of electric charging spots at current parking locations as well as battery exchange stations, analogous to gas stations, all of which are integrated with software systems.

the new international forum links up the EU Commission and seven member states (France, Germany, the UK, Italy, the Netherlands, Ireland and Portugal) with eleven US and Canadian regional states (the likes of New York, Maine, California and British Columbia) to exchange information and best practices about their efforts to create carbon markets through a cap-and-trade system. The bad news: where are the other 20 EU member states? And what about other federal governments such as the US, Russia, China or India?

The 2,000 residents of the Carteret Islands in Papua New Guinea are now some of the world's first climate change refuges, as rising sea levels driven by global warming have claimed their island homes. The residents of the low-lying South Pacific atolls have given up their 20-year losing fight against rising seas and will be resettled elsewhere in Papua New Guinea.

The company's Power-Pipe technology is basically copper tubing that wraps around a residential drain pipe.

The company claims the system will pay for itself in two to five years, it can be used in new and old homes, and it can reduce home energy consumption by 5 to 10 per cent. Not bad when you consider the hot water portion only accounts for 20 to 30 per cent of total home energy use.

Hochtief believes that in the future, geothermal energy will play a very important role in power generation. Theoretically, geothermal energy plants could cover Germany‘s annual electricity consumption 600 times over.

With a range of approximately 60 miles (100 kilometers) the all electric Micro-Vett Fiat Doblò 5 seat station wagon, powered by a 18 kWh Altairnano NanoSafe® battery pack is undergoing field trials in Oslo, Norway. The battery pack was  recharged three times, in less than ten minutes using a high voltage rapid charging system

23% of China’s CO2 emissions in 2004 were due to demand from the West for manufacturing products made in the new economic giant. This 23% is as much as the combined emissions from Germany and Australia and more than twice the national emissions of the UK.

EnerDel’s Li ion solution for the Electric Vehicle drive train is designed to have higher energy density than HEV cells and to enable vehicles to last up to a goal of 100 miles (160 kilometers) without recharging.

he European Commission today launched infringement procedures against Belgium, Estonia, France, Greece, Hungary, Latvia, Luxembourg, Malta, Portugal, Slovakia, Slovenia and Sweden for failure to notify their national Energy Efficiency Action Plan by 30 June 2007, as required by the 2006 Energy End-Use Efficiency and Energy Services Directive[1]. The Action Plans should present national strategies on how to achieve a 9% energy savings target by the end of 2016 as well as how Member States comply with a number of other provisions of the Directive.