Grainger (NYSE: GWW), Chicago, IL, a broad line distributor of facilities maintenance products, has acquired Alliance Energy Solutions, Oxford, CT. Alliance Energy provides turn-key energy-efficient lighting retrofits. The transaction is expected to be accretive to earnings in 2010 by approximately $0.01 to $0.02 per share. Other terms of the deal were not disclosed.

“This transaction is the first service-based acquisition we’re adding to our U.S. customer offering and we anticipate it will help us accelerate our strategy to become our customers’ indispensable partner in helping them keep their facilities safe, efficient and functional,” said James T. Ryan, Grainger president and CEO.

Alliance Energy President Kevin Siebrecht, and COO Matt James will continue to lead the operations under the Alliance brand name. In 2008, Alliance had sales of $20 million.