Commercial structures a good place to put solar panels

In a piece titled Retailers Opt To Roll Their Own Power, Informationweek tells us that

"Cutting back on electricity use can trim a company's power bills only to a point. To really make a dent, businesses are beginning to generate their own juice to supplement what they buy off the grid. Some big-box retailers are doing it by erecting solar panels on their rooftops. Wal-Mart, Kohl's, Macy's, and WholeFoods are hurrying to make a Dec. 31 deadline to qualify for tax incentives"

Rooftops of big stores and warehouses are a very logical place to put solar panels; this is good news.