‘Big data’ can predict weather up to 40 days into the future

EarthRisk Technologies has developed a new model for predicting extreme weather events based on 60 years of data and 82 billion calculations.

Cool down this summer with new Nest thermostat features: Sunblocking, new cooling options, and more

The Nest smart thermostat continues to get smarter with every software update.

Everybody Solar helping nonprofits go green … for free

Everybody Solar is helping charities like the Bay Area low-income home rehab volunteer organization Rebuilding Together Peninsula go green by accessing the free energy of the sun -- with free solar panels, to boot.

Greentech state of the union boost: Obama proposes using oil and gas money to fund green energy

President Barack Obama's state of the union address focused on innovation, jobs, education, health-care ... and green technology.

Paul Allen’s firm bets on cleantech startup that turns natural gas into chemicals

Siluria Technologies, the San Francisco-based cleantech company that is developing a technology to turn natural gas into transportation fuels and industrial chemicals, announced it has raised $30 million in investment for its third founding round.

With over $63 million in …

Nest goes big in Texas with utility distribution deal

Thermostat maker Nest is joining forces with its first utility company, Reliant of Texas. The energy provider plans to distribute the smart thermostat to customers who sign up for the Reliant Learn & Conserve two-year plan.

The Nest thermostat attracts …

Dept. of Energy throws millions at a startup trying to make solar energy mainstream

The U.S. Department of Energy wants normal Americans to start using solar energy in their everyday lives. To that end, it’s just granted $2 million to Solar Mosaic, a sort of Kickstarter for solar projects.

Solar Mosaic is still in …

Nest fights back: taps former Apple patent chief to take on Honeywell

It’s become a tired pattern these days: create an innovative product, then sit back and watch the patent lawsuits pile up. That’s what happened to the smart thermostat maker Nest, which wowed the world with its gorgeous web-connected device in …

Facebook app promotes energy conservation with peer pressure

If simple common sense can’t curb energy usage, perhaps a little peer pressure from Facebook friends will do the trick.

Facebook has joined forces with energy efficiency startup Opower and the National Resources Defense Council to release a social energy …

Siemens amps up its smart grid bid with eMeter startup acquisition

German electronics giant Siemens has just bought eMeter, a San Mateo-based startup focusing on smart grid technologies for utilities such as power and water.

eMeter, which is led by Veritas CEO and former Oracle executive Gary Bloom, gathers information from …

Demo: A revolution in home utilities, NeighborOil promises lower prices through group buying power

Oil means more than just gasoline. For many folks, it's also how they heat their homes.

NeighborOil is a startup that's reexamining how communities buy oil for heating and helping consumers negotiate for better prices and better service. And starting today, it's bringing its revolutionary model to a wide range of residential utilities, including electricity and natural gas.

Fuel cell manufacturer ClearEdge raises $73.5M

ClearEdge Power, a manufacturer of fuel cells that run on natural gas, announced today that it has raised $73.5 million in its fifth round of funding.

The company manufactures fuel cells that run on natural gas, which is broken down …

Consumer electronics battery maker Leyden Energy raises $20M

Leyden Energy, a developer of consumer electronics batteries that operate at temperatures as high as 60°C, announced today that it has raised $20 million in its second round of funding led by New Enterprise Associates.

The company makes lithium-ion batteries …

Trash-to-fuel company Enerkem raises another $30M

Enerkem, a company that specializes in converting unusable waste into ethanol and other chemicals, announced today that it has raised $30 million in an extension of its most recent funding round.

Enerkem converts household garbage and leftover debris from demolition …

Fuel cell manufacturer ClearEdge snags $2.8M DOE grant

ClearEdge, a manufacturer of fuel cells that run on natural gas, announced today that it has secured a $2.8 million grant from the U.S. Department of Energy.

The grant will give ClearEdge working capital to produce and install fuel cells …

Enerkem's trash-to-fuel talents bring in $60M

Oil and petrochemical giant Valero and existing investors have just dropped $60 million on Enerkem, a company that specializes in converting unusable waste into ethanol and other chemicals.

The company says it can convert household garbage, leftover debris from demolition …