Geothermal energy

GE has reached its target to build a $6 billion portfolio of renewable energy investments. Green companies now comprise almost 30 percent of the overall portfolio.

3 | December 9, 2010 7:41am | By Andrew Nusca

General Motors is another step closer to making hydrogen vehicles in Hawaii a reality.

9 | December 8, 2010 8:07am | By Andrew Nusca

The company's focus on internal and external efforts to reduce its environmental impact bears repeating across the retail sector.

4 | November 25, 2010 4:44am | By Heather Clancy

At a mobile health technology summit in Washington, the CNN founder and philanthropist talked about innovation, tackling disease, eliminating nuclear weapons and how he keeps up with a quickly...

5 | November 10, 2010 1:45am | By Melanie D.G. Kaplan

Executives in the renewable energy industry are pondering what a change in government means to their businesses.

38 | November 5, 2010 4:45pm | By David Worthington

Municipal and state governments also demonstrate strong leadership, according to latest EPA Green Power Top 50 ranking.

November 2, 2010 4:14am | By Heather Clancy

Transportation topped smart grid and biofuels in cleantech investment in the third quarter of 2010, according to a new report. Here's a breakdown of the numbers.

October 4, 2010 6:51am | By Andrew Nusca

An offshore drilling industry is emerging in Cuba. American companies want in, even if it's just to clean up a potential mess.

3 | October 1, 2010 4:00am | By Melissa Mahony

In a quest for energy independence, the Saint Lucian government signs an agreement with Qualibou Energy Inc. to develop and export geothermal power.

2 | August 19, 2010 4:00am | By Melissa Mahony

Johnson & Johnson has been articulating some form of corporate sustainability since 1943. Here's a look at the returns associated with modern-day projects.

1 | August 16, 2010 3:30am | By Larry Dignan

The Environmental Protection Agency names the top purchasers of U.S.-generated renewable energy within their Green Power program. Did your company, school, city, state make the list?

August 4, 2010 4:00am | By Melissa Mahony

Want to make money in the cleantech business? One expert says to look past North America, Europe and Asia to emerging markets in India, the Middle East and Africa.

1 | July 7, 2010 6:50am | By Andrew Nusca

Tata Power Company seeks to go off the grid by bringing wind turbines to the rooftops of rural India. Will the small packages of clean kilowatts add up to big energy?

17 | July 7, 2010 4:00am | By Melissa Mahony

The future of renewable energy is in the microprocessor, and natural gas will help smooth the transition from fossil fuels to renewables, a top cleantech exec says.

1 | June 29, 2010 12:26pm | By Andrew Nusca

Honeywell Building Solutions is orchestrating more than $100 million worth of similar projects funded with ARRA money.

June 29, 2010 5:45am | By Heather Clancy

Researchers break more ground for geothermal in England. Will this be the country's next leading renewable energy source?

3 | June 28, 2010 4:00am | By Melissa Mahony

Osmotic power is years from commercial scale, but a new report indicates that cleantech vendors believe it can provide thousands of terawatts per year of baseload electricity.

16 | June 9, 2010 7:41am | By Andrew Nusca

Acciona's Eric Schneider says the U.S. has wind power potential that's the envy of the world -- and the Midwest holds the key. But a major federal push is required to build out the necessary...

8 | May 27, 2010 8:36am | By Andrew Nusca

A new drill that uses super-hot water to cut through rock could help make geothermal energy a viable alternative to fossil fuels.

18 | May 23, 2010 8:30pm | By Andrew Nusca

In its eighth corporate responsibility report, the energy company outlines emerging technology investments, including huge carbon dioxide reuse project off Australia.

May 5, 2010 10:56am | By Heather Clancy