California has so much solar energy that some days, there's too much. One solution is to join forces across state borders. But in the West, that's sparking some not-so-neighborly opposition.
The two nations topping the world in greenhouse gas emissions agreed at the Paris talks to cut way back. But critics have stalled a key part of the U.S. plan, and China's good start may be fragile.
At the Heartland Biogas Project, spoiled milk, old pet food and vats of grease combine with helpful bacteria in massive tanks to generate gas. It's all thanks to anaerobic digestion.
LAS VEGAS (AP) — The Public Utilities Commission has approved a deal for the city of Las Vegas that seeks to increase the city's use of renewable energy.
The Noor I solar thermal power plant is the first phase of a project that's projected to provide more than a million Moroccans with electricity — even once the sun has gone down.
It's the largest city in the U.S. to commit to using only renewable energy. And even though stakeholders are on board, trouble could be brewing over how to implement the plan.
Europe has extracted natural gas from organic waste for about a decade, and now it's spreading to the U.S. In Colorado, efforts are under way to produce natural gas from human waste and food scraps.
Is renewable energy expensive or cheap? This is a question being debated in Paris this week. Though there's no simple answer, in South Africa the verdict is in — and it's a surprising one.
Montana has one of the heaviest lifts of any state to comply with the EPA's plan to reduce carbon emissions. But the state is also rich in renewable energy, and the regulations may be a boon to some.
Biofuel producers are teaming up with farms, meatpackers and waste management companies to tap the gassy waste on farms to make renewable jet fuel and diesel for vehicles.
Citing a boom in natural gas and shifts in demand, the Energy Information Administration says the U.S. could stop being a net energy importer "sometime between 2020 and 2030."
A few years ago, Nicaragua was almost totally dependent on imported fuel. Now the country's fierce winds, sun and volcanoes generate half the country's electricity, and perhaps 80 percent soon.
For the second time in two months, the Public Utilities Commission has rejected NV Energy’s proposal to build the Moapa Solar Energy Center on land it...
A year ago, billionaire Warren Buffett bought NV Energy, the power company that serves 2.4 million customers in Nevada. A week ago, the New York Times...
Two top officials in President Barack Obama's administration say the potential for renewable energy development in the Southwest is tremendous but much...
When NV Energy released a plan to move away from coal, and use more natural gas and renewable energy, they said they were bowing to the economic and regulatory pressure. But at least one envrionmental group, the Sierra Club, has put pressure on NV Energy to close its coal plants.
