How the stimulus package will affect the power sector

The package contains more than $42 billion in energy-related investments from tax credits to homeowners to loan guarantees for renewable energy projects and direct government grants for makers of wind turbines and next-generation batteries.

There's a 30 percent tax credit of up to $1,500 for the purchase of a highly efficient residential air conditioners, heat pumps or furnaces. The credit also can be used by homeowners to replace leaky windows or put more insulation into the attic. About $300 million would go for rebates to get people to buy efficient appliances.

The package includes $20 billion aimed at "green" jobs to make wind turbines, solar panels and improve energy efficiency in schools and federal buildings. It includes $6 billion in loan guarantees for renewable energy projects as well as tax breaks or direct grants covering 30 percent of wind and solar energy investments. Another $5 billion is marked to help low-income homeowners make energy improvements.

About $11 billion goes to modernize and expand the nation's electric power grid and $2 billion to spur research into batteries for future electric cars.