UL, based in Illinois, did not release terms of the transaction, which closed on Monday.

The deal expands UL’s global renewable energy portfolio by strengthening full lifecycle solutions for the wind and solar energy sectors.

AWS Truepower, with headquarters in Albany, New York, provides renewable energy services through five business units covering project advisory, performance engineering, due diligence, information services and grid solutions.

Its service portfolio complements UL's current renewable energy offering focused on testing, inspection and certification as well as performance verification of solar, wind, batteries and energy storage systems.

The acquisition supports UL's global expansion strategy as many countries are moving to achieve energy independence and security, and environmental sustainability. AWS Truepower’s services are “crucial” in supporting growing demand worldwide for energy assessments of new generation coming online and ongoing support, according to UL.

"There is strong alignment between the two brands," said Jeffrey Smidt, vice president and general manager for UL Energy & Power Technologies. "UL and AWS Truepower have a shared mission and complementary businesses.”

“As the market for renewable energy increases and demands a full life cycle service offering for renewable energy projects, the combined portfolios enable us to capture additional business globally," he added.

AWS Truepower's employees will join UL and remain with the company. For the time being, AWS Truepower will continue operating under its current brand name.