Huron Capital Partners-backed Albireo Energy LLC has acquired Energy Options Inc. for an undisclosed amount.

Energy Options, headquartered in Edison, N.J., is a building automation and energy services provider. The company is Huron's first add-on acquisition to Albireo, which it bought in 2013.

Albireo plans to grow Energy Options through acquisitions and adding new services. The buyer was founded by Huron and industry executive Phil Bomrad to provide energy service and smart building services to commercial and institutional customers in the U.S. The company aims to try to help building owners reduce operational costs.

Huron, headquartered in Detroit, focuses on lower middle-market companies. The firm has raised more than $1.1 billion in capital since it was founded in 1999.   In May, the firm bought American Auto Auction Group, which provides dealer-to-dealer auction services. For more on Huron, see our video interview with Huron partner Gretchen Perkins.