Apax Partners, an independent global partnership focused solely on long-term investment in growth companies, agreed to invest in Integrated Environmental Solutions, a software and consultancy company that specializes in building performance analysis. Financial terms were not disclosed. "I’m incredibly proud of the IES team for the success we have achieved over the last thirty years, and in Apax we have found a likeminded partner who is ideally placed to help us in the next stage of our growth journey. Buildings and cities have the potential to make the biggest impact in reducing carbon emissions globally. This investment, and the support of the Apax Impact team, will empower us to support ever more clients around the world in creating a built environment that is resource and energy-efficient," Don McLean, Integrated Environmental Solutions Founder and CEO.