ESI is an industry leader in the integration and installation of Roof Mounted PV Solar to building facilities in both the private and public sectors. ESI has over 35 years of onsite Construction, Commercial Roofing and Project Management experience. ESI is an approved/certified installer of all Tier 1 Solar Racking and Roofing Manufacturers, with whom we maintain strong relationships in an effort to keep our team up to speed on all of the latest advancements in product/system design.