Like Clinton, Obama plans on investing $150 billion over the next 10 years to promote alternative energy and conservation. He would require the nation's utilities to get 25 percent of their electricity from renewable sources by 2025, a higher standard than the one recently proposed and rejected in Congress.
Unlike Clinton, Obama's Web site talks extensively of saving energy by reshaping the way the country builds its communities.
"We know that the amount of fuel we will use is directly related to our land-use decisions and development patterns, much of which have been organized around the principle of cheap gasoline," the candidate said on his Web site.
The Illinois senator, currently second among Democrats in national polls, proposes rewarding towns with federal transportation money for smart development decisions. He also would require states to plan with energy conservation in mind, a policy that is now only encouraged. Obama favors giving employers more tax breaks when they encourage employees to use mass transit, as opposed to current rules in which drivers get twice the benefit.