It would help the city reach a carbon neutrality goal.
By Emma Nelson Star Tribune |. November 23, 2020

St. Paul is preparing to replace a decades-old steam boiler system at Como Zoo and Conservatory with geothermal energy, as the capital city moves toward a goal of carbon neutrality in municipal buildings within the next decade.

The geothermal system, which will use groundwater to heat and cool buildings, is expected to reduce the zoo’s carbon emissions by at least half. The city is partnering with Xcel Energy and a local geothermal energy company to study which aquifers to use, where to begin retrofitting and how much it will all cost.