IKEA plans to increase the solar array atop its Detroit-area store that opened eight years ago in Canton, MI. In September, IKEA began work on a 44,000-square-foot expansion to the store, atop which new panels will be installed beginning spring 2015, with a completion by summer. The 40,000-square-foot solar addition will consist of a 240.9-kW system built with 765 panels, and will produce 287,490 kWh more of electricity annually for the store.