The state of California is on its way to requiring utilities to store a portion of the renewable energy they generate for off-peak usage. California...

For decades, designers of solar power systems have faced a knotty set of interlocking challenges. Solar panels produce DC at relatively low voltages, but inverters...

People in the United States consumed more renewable energy last year than 2008, despite cutting overall energy use, according to new research. Analysis  published by...

The energy developer and project owner NextEra Energy Resources got the green light from the California Energy Commission (CEC) this week to build a $1...

In the wake of  out-of-state oil companies spending millions of dollars to oppose California’s AB32 climate law , an alliance of California businesses as well...

California state regulators have spent the last few years trying to revise a program that was meant to boost small-scale renewable energy generation but wasn’t...

A new government study shows that Americans are using less energy overall and making more use of renewable energy resources. The United States used significantly...

Since 2007, more money has been spent each year on renewable energy electricity capacity than on conventional power. Twenty-nine states and the District of Columbia...

Americans are using less energy overall and making more use of renewable energy resources , according to a report released by the Lawrence Livermore NationalLaboratory...

According to a study unveiled today by Energy Secretary Chu and VP Joe Biden, the US is on-track to achieve the three major renewable energy...

Bill Gates has done some big thinking on energy and wants you to know: this is not an easy problem to solve. Technology Review on...

Researchers from the Germany Center for Solar Energy and Hydrogen Research (ZSW) have broken a new efficiency record for thin-film copper indium gallium diselenide solar...

Wondering how much good those tens of billions of dollars in stimulus package funding have done for clean power innovation, the smart grid, advanced green...

Now that the earnings season is almost over, I think a review of surprises in the storage sector seems appropriate. As some readers may know,...

Europe’s evolution toward a heavier reliance on renewable energy is nicely documented in a  report  released this week by Eurostat, the European Union’s statistics agency....

In general terms, we’ve known for a while that the current condition of the grid would be a limiting factor in the growth of renewable...

New investment in clean energy technologies, companies, and projects was steady in the second quarter (Q2) of 2010, according to a Bloomberg New Energy Finance...

Chinese solar equipment maker  Suntech Power Holdings today reported a loss of $174.9 million despite a 95 percent increase in revenue to $625.1 million in...

Similar to the way that the smart grid reflects the combination of energy management and information technology, building integrated photovoltaics (BIPV) is the marriage of...

Sen. John Kerry, D-Mass., has introduced the Clean Energy Technology Leadership Act of 2010 . The legislation will provide tax incentives for clean energy manufacturing,...

There’s been a couple articles in the past few weeks pointing to President Obama as the " clean tech investor in chief ” and the ...

Electric vehicle startup Tesla Motors’  $226 million IPO in June  marked the first debut by a car maker on Wall Street since Ford Motor began...

Greentech has become a big subject in corporate conference rooms over the past year. Large companies have been among the top investors so far this...

Happy greentech earnings day! Some major bellweathers of emerging green industries — including solar maker SunPower, LED chip company Cree, lithium ion battery producer A123...

The Gulf oil spill catastrophe is an ongoing tragedy. And while the well seems to be capped now, we will surely see the harm from...

If you care about  fostering prosperity in poor places   while limiting  the buildup of greenhouse gases   in the globe’s shared atmosphere, it’s time...

Half of the energy used by software giant SAP now comes from renewable sources, moving the company closer to its goal of shrinking its carbon...

With over 75 countries, states and provinces around the world with some kind of feed-in tariff, policymakers and researchers in the U.S. are considering the...

Of the 16 Gigawatts of renewable energy that  the US will have installed once the Recovery Act (ARRA) stimulus funds are all spent , 11...

Moore’s Law and the fast pace of innovation in computing and the Internet have deeply spoiled and confused us in terms of how fast the...

Beacon Power on Monday said it has closed a $43 million loan guarantee with the Department of Energy for a project to use flywheels to...

DOE announced on August 2 that it will award $188 million—including $73 million in American Recovery and Reinvestment Act funding—to small businesses in 34 states...

A new report out by the Department of Energy (DOE) and Lawrence Berkeley National Laboratory, the  2009 Wind Technologies Market Report  [PDF] , provides us...

An Oakland company's plans to build the world's largest solar thermal power plant in California's portion of the Mojave Desert cleared a major hurdle by...

While fossil fuel companies in the U.S. are busily wrecking vast sections of the country’s natural heritage, a new energy resource has been quietly emerging...