Concerns about global warming and dwindling supplies of fossil fuels has rekindled interest in building nuclear power reactors.

After three decades without starting a single new plant, the American nuclear power industry is getting ready to build again.

Renewable energy technologies are facing big challenges because of the credit freeze and plunge in oil and natural gas prices.

The Exelon Corporation says its unsolicited bid to buy NRG Energy would create the largest power company in the country, in terms of assets, market capitalization and generation capacity.

Renewable energy technologies are facing big challenges because of the credit freeze and plunge in oil and natural gas prices.

The Exelon Corporation said late Sunday that it had offered to buy NRG Energy for $6.2 billion.

Exchange traded funds that focus on alternative energy have proliferated and many of them have been mirroring the sharp swings in the oil markets.

Both John McCain and Barack Obama endorse nuclear energy, although to differing degrees, as part of their strategy to wean the United States from its dependence on foreign oil.

Spurred by rising costs for electricity, energy visionaries are making a new push to overcome the barriers blocking ocean-power technology.

Consumer prices posted the first decline in nearly two years in August as Americans got some relief from surging energy prices.