Shoe Show, the footwear discount chain, is planning to build a giant solar farm at its Concord headquarters that would be the state's second-biggest solar energy array.

The company notified state regulators it wants to build a 4.975 megawatt system at its corporate complex in Cabarrus County. The N.C. Utilities Commission posted the filing on its web site this afternoon.

The solar farm would be built in three phases, with the first to begin generating electricity within two weeks, the company's filing states.

Solar energy has been the most widely adopted renewable resource in the state since a 2007 state law required power companies to increase their reliance on green energy.

The state's biggest solar farm, in Davidson County, is 15.5 megawatts. A Florida company is considering North Carolina as a possible site for a 400 megawatt array, which would be the world's biggest.

State and federal tax credits cover more than half the cost of solar energy.

john.murawski@newsobserver.com or 919-829-8932