Walgreens (NYSE: WAG) announced the opening of a store in suburban Chicago that uses geothermal heating and cooling. The drugstore chain said it is the first in the industry to use the technology in a retail store.

The location, in the Chicago suburb of Oak Park, Ill., is expected to reduce its energy usage by about 46 percent as a result of the geothermal system.

Last year, The Village of Oak Park passed an ordinance requiring any retailer that wants to build a commercial property within its village limits to investigate geothermal energy.