Adding electricity from renewable sources would impose new demands on a transmission system that was never designed for large power transfers over extremely long distances, an industry report says.

Adding electricity from these sources would impose new demands on a transmission system that was never designed for large power transfers over extremely long distances, an industry report says.

In the face of rising unemployment, renewable energy has become a crucial source of good jobs for laid-off Rust Belt workers.

For years, wind-farm projects had stalled in the face of local political opposition. Then an entrepreneur named Peter Mandelstam came up with a new and energizing approach.

Siemens, the German conglomerate, said it had struck a deal with the German utility E.On to build 500 wind turbines for planned projects in Europe and the United States.

Interest for wind turbines small enough to mount on a roof is spreading from coast to coast, even though their installation is hardly ever recouped in electricity savings.

The dirty secret of clean energy is that while generating it is getting easier, moving it to market is not.

Mayor Michael R. Bloomberg is seeking to put wind turbines on New York City’s bridges and skyscrapers and in its waters as part of a push to develop renewable energy.

The wind industry has arrived in force in upstate New York, but some residents say the companies have brought with them an epidemic of corruption and intimidation.

The oil tycoon talks about his plan to solve America’s energy crisis, why he’s not running for the presidency (this time) and why he’ll never vote for a Democrat.