The Kapolei Sustainable Energy Park (KSEP) project is at the former Hawaii Western Steel Waste Pile Facility, which until 1986 was used as an industrial disposal site. Interactive Resources was retained by Perpetual Power to provide structural engineering services for the 1.19 megawatt ground-mounted solar array atop the existing capped landfill located in Kapolei on the Island of Oahu in Hawaii.

Structural calculations were prepared to determine the ballast block requirements for the ground-mounted array. An investigation was performed to determine an alternate means of anchoring the array, which included adhesive anchorage of a smaller ballast block and review of the ballast layout and ballast details as prepared by Perpetual Power.

“This environmental success story is a model for effective land use, and an innovative solution that aids both Hawaii’s economy and ecology,” said Jon Wallenstrom, president of Forest City Hawaii, the project developer.

Photos courtesy of Perpetual Power.