3i Infrastructure-backed Joulz Diensten, a provider of essential energy infrastructure equipment and services, completed the acquisition of Zonel Energy, a provider of solar rooftop solutions. Financial terms were not disclosed. “The acquisition of Zonel fits with our mission of helping customers to achieve their energy transition ambitions. Following 3i Infrastructure’s investment, we have access to the capital required to accelerate our growth and are becoming the leading provider of integrated energy transition solutions in the Netherlands. Joulz is ambitious and the acquisition of Zonel will certainly not be our last," Jan Verheij, Joulz CEO.