Audi is rolling out a new solar program for its fledgling fleet of eTron electric vehicles. The German manufacturer is planning to expand the solar panel system at its facility in Ingolstadt so that the electric vehicle's batteries may be charged using clean, renewable energy from the sun. Audi says that by the end of the year, it hopes to cover some 80,730 square feet of the plant's roof with new photovoltaic panels. By the end of the project, Audi says it will have nearly 205,000 square feet of its German manufacturing facility's roof covered with the solar cells. The company says that the new installation alone should produce enough electricity to power 180 homes.

Audi plans to only use about one third of the electricity produced by its solar system directly at the plant, with the juice going to both charge the company's eTron vehicles and assist in the manufacture of other products. The rest of the energy will likely be fed back into the surrounding power grid.

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