Wal-Mart Beating Ikea, Apple in U.S. Solar Panel Installations

Wal-Mart Beating Ikea, Apple in U.S. Solar Panel Installations

Reed Saxon/AP Photo

Solar panels are seen on the roof of a Wal-Mart Supercenter in Baldwin Park, Calif. Wal-Mart, with 4,522 stores in the U.S., expects to have 1,000 solar-powered locations by 2020.