renewable energy

Drivers who buy an electric car that plugs into the power grid to recharge the battery often start to consider the source of their energy. A 2012 analysis from California, in the earliest days of modern electric cars, indicated as many as four in 10 electric-car drivers were already using or...

Today, there are roughly 750,000 plug-in electric vehicles on U.S. roads and about 3,800 powered by hydrogen fuel cells. Proponents of each type of vehicle argue strenuously that their powertrain is a better way to produce vehicles with zero emissions from the tailpipe. Electric cars can be charged...

A majority of the photovoltaic solar panels used in the U.S. are imported from such countries as China, Malaysia, South Korea, Thailand, and Vietnam. Now, environmentalists and energy analysts worry that the new 30-percent tariff on solar-panel imports announced last Monday by President Donald...

Renewable-energy generation costs are falling like photons onto a solar panel. By 2020, it's expected all types of renewable-energy generation will be able to compete with fossil fuels on cost. That's right: saving our environment will actually save electric utilities some money, too. DON'T MISS...

For much of last year, U.S. Energy Secretary Rick Perry pursued a plan that, in essence, would prop up the financially challenged U.S. coal and nuclear industries. His proposal, submitted to the Federal Energy Regulatory Commission last fall, provided financial subsidies to electric-generation...

Five years ago, an electric-utility think tank issued a dire warning to its members: Your century-old business model is ending. The continually falling costs of renewable energy generation, especially solar panels, would begin to erode utilities' business from its most profitable customers, the...

Tesla CEO Elon Musk made a bet that he'd build the world's largest lithium-ion battery in Australia in 100 days. If his company failed, Musk would personally pay for the project, but the battery is now ready for its first test ahead of full operation—and on schedule. The massive...

Sometimes a picture is truly worth a thousand words. In the case of the rapidly rising rate of solar installations for electricity generation, numerous forecasts by internationally respected bodies have proven woefully conservative. The chart in the tweet below, created by Auke Hoekstra at the...

Earlier this month, the 30th World Solar Challenge kicked off in Darwin, Australia, with 42 competitors vying for victory. At the end of the 3,022-kilometer (1,880-mile) race from Darwin to Adelaide, one team emerged victorious in the highly contested Cruiser class. Solar Team Eindhoven, from the...

Although a car powered solely by solar power is far from reality, the 30th anniversary of the World Solar Challenge showcased just how far the technology has come. World Solar Challenge kicked off its celebrations with this year's iteration of the solar-powered car race in Darwin, Australia, on...

Pity Energy Secretary Rick Perry, the man now running the cabinet department he couldn't remember that he wanted to eliminate altogether during a notorious 2011 presidential debate. He has pulled off an unusual feat, by uniting lobbyists for fossil-fuel interests with their counterparts advocating...

Tesla’s summer announcement of the world’s biggest battery-storage system in South Australia characteristically kept key details confidential. Fortunately, while mystery and mystique still shroud that project, more can be unearthed or inferred for Tesla's solar panel and battery...

The Trump administration hasn't been coy about trying to champion traditional fossil fuels while downplaying the importance and falling costs of renewable energy. Earlier this year, Department of Energy secretary Rick Perry, previously governor of fossil-fuel producer Texas, called for a 60-day...

For 50 years, the state of California has led the United States when it comes to renewable energy and electric cars. The state features many programs to incentivize electric-car ownership, and 29 percent of the state's 2016 energy production came from solar, wind, and other renewable power sources...

The Trump administration has reneged on one aspect of a promise widely discussed throughout the 2016 presidential campaign: reviving the coal industry. President Donald Trump declared the United States coal industry would thrive under his watch, but the Trump administration and the Energy...

The Senate Committee on Appropriations recently exhibited a quality somewhat rare in U.S. politics these days: bipartisanship. The committee released a lengthy report on the 2018 fiscal year budget for the Department of Energy that walks away from the Trump Administration's efforts to defund clean...

The purchase of an electric car that plugs into the power grid to recharge its battery often gets drivers thinking about the source of their energy. We haven't seen data from recent years looking at the overlap between electric-car drivers and home solar panels. But early analyses in California...

The future of energy production remains in considerable debate, but some new research provides a more optimistic view for a lower-carbon future. Sources for new and replacement energy production remain uncertain, especially the degree to which renewable sources can replace those based on fossil...

The U.S. is coming up to its Independence Day holiday, in which we celebrate the Declaration of Independence from England and reflect on our history and traditions as a nation. This is an interesting time to do that, and there's a cynical argument to be made that backroom politics is as American as...

Scientists generally debate their studies and projections in relatively civil language, but perhaps the currently adversarial tenor of U.S. politics has spilled over into science. A 2015 study on the potential for renewable energy use in the U.S. has now produced not only a stringent attack, but a...