Minnesota's The Heights Development Implements Aquifer Thermal Energy Storage System

The Heights, a 112-acre redevelopment project in Saint Paul, Minnesota, is implementing an aquifer thermal energy storage (ATES) system to provide sustainable heating and cooling for its buildings. This system utilizes underground aquifers to store and retrieve thermal energy, reducing reliance on fossil fuels and lowering greenhouse gas emissions.

The ATES system at The Heights is among the first of its kind in the United States, following initial Department of Energy field tests in the 1980s. The project has received a $4.7 million loan from the Minnesota Climate Innovation Finance Authority (MnCIFA), marking the authority's first investment.

The development will include 1,000 housing units and one million square feet of light industrial space, all connected to the geothermal system. The project aims to provide low-carbon energy and reduce energy costs for residents and businesses.

The Heights Community Energy will own and operate the geothermal system under the direction of District Energy St. Paul. The project has been recognized with the 2025 Innovation Award from the Economic Development Association of Minnesota for its creative approach to sustainable development.