On a two-day trip to promote his energy policy, President Obama said the nation must invest in alternative energy or cede leadership to China. He called on Congress to help create jobs by providing more aid to struggling homeowners and investing more in infrastructure.

The U.S. will impose new tariffs on cheap Chinese solar panels. The new duties will be low. Analysts say it's not likely to spark a trade war.

The biggest solar storm in more than six years is blasting the earth with radiation today.

A Maryland solar company is creating small power plants throughout a neighborhood as a means to pool financial resources and valuable roof space.