Blackstone-Backed Solar Firm Agrees to Buy Spain’s STI Norland

U.S. solar equipment manufacturer Array Technologies Inc. agreed to buy Spanish firm Soluciones Tecnicas Integrales Norland S.L. for about 570 million euros ($652 million) in cash and stock to accelerate an international expansion.

The deal will make Array the world’s largest producer of solar trackers, devices that maximize electricity output by adjusting solar panels to follow the sun’s path, the Albuquerque, New Mexico-based company said Thursday in a statement. STI Norland describes itself as a leading supplier of solar trackers in Brazil and Latin America, and the company generates about 95% of its revenue outside the U.S.

The acquisition comes ...