The Shakopee Mdewakanton Sioux Community is installing a 32,648-square-foot green roof atop its second sheet of ice at Dakotah Sport and Fitness. The new ice arena is scheduled to open in mid-October.

Instead of the gravel normally found on a flat commercial roof, the new green roof will have engineered soil and shallow rooted perennial plants. The soil and plants hold rain water and slowly release it over time, reducing the total storm water runoff from the building. It also reduces erosion and improves water quality. The technology will extend the life of the roof to 40 to 50 years by protecting it from ultraviolet radiation. It will also simplify temperature management inside the facility.

In a couple of years, the roof will be filled with a thick carpet of green plants and flowers, similar to the SMSC’s first green roof project, the 30,000-square-foot green roof on top of the SMSC water reclamation facility, built in 2006. The new green roof will be the largest in the upper Midwest.

The new ice arena contains several other features in addition to the green roof. A compressor system and heat exchanger will take the waste heat from the ice-making equipment and redirect it through the bleachers to heat the concrete to make the seating area more comfortable for fans.

In July, 16 solar panels were installed in two banks of eight each atop the new ice arena. Visible from nearby County Road 82, the solar panels will heat water for use in the ice resurfacing equipment.The ice arena is home ice for the Prior Lake High School girls and boys hockey teams as well as the Prior Lake Hockey Association.

The green roof was designed and constructed by HTG Architects of Eden Prairie and installed by Aloha Landscaping of Mendota Heights, with infrastructure by Rosenquist Construction of Minneapolis