Drees & Sommer, a consultancy specialising in construction and real estate, completed the acquisition of cruh21, a consultancy for hydrogen and environmental projects. Financial terms were not disclosed. "We focus primarily on the early stages of project development. Our experts advise in the areas of regulation, approval capability, strategy, concepts, feasibility and communication. We work for a wide variety of customers. We develop sustainable solutions for the energy and hydrogen industry, industry, inland and seaports as well as for cities and municipalities," Jimmie Langham, cruh21 Managing Director.