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Minneapolis development to use groundwater to heat and cool buildings



Gas A. Minneapolis Development Project will use groundwater for heating and cooling. The technology is called. Aquifer Thermal Energy and the city of Minneapolis seems to be embracing it as an alternative. To greenhouse gas emitting natural gas but how can aquifer work as an energy source in? Minnesota's frigid climate. Nina Axelson is the vice president for sustainability and outreach at Evergreen energy they are partners in the upcoming tower side innovation district. Hi Nina Hi Paul Geothermal energy one. Oh one I. How does it work? So a lot of folks are familiar with using the energy stored underground whether in our soil or in our water to heat or cool and Minnesota are aquifer systems in our hydro. Geology are really special and lend themselves well to this. Type of geothermal is counting on the energy stored in the water in the Aquifer to help heat and cooler buildings. What's the water temperature in the aquifer that this project will be tapping for the city of Minneapolis? I think we'd be looking at about a forty to fifty degree temperature as a starting place and then as the technology goes into US. You're actually removing heat from buildings. Between let's say May and October and storing it into a part of the Aquifer that allows for a reserve of heat in that Aquifer so that in the winter that part of the Aquifer that you're extracting from the heat is going to have higher temperatures more capacity and is that able then to generate enough heat or cooling for the buildings. It wouldn't be able to do it alone so this is under the trend that folks here about of beneficial electrification. Which means you're GONNA pair electricity in this case heat pumps with that geothermal capacity in the aquifer to either extract heat from the building during cooling season or to increase the heat enough to be used for heating the spaces in the building or for a hot water uses so this project in Minneapolis. How many buildings are planned to be heated and cooled with this project in the tower side innovation district which is part of the Prospect Park neighborhood of Minneapolis and also the saint. Anthony Park neighborhood of Saint. Paul there is been a lot of development The Green Line surly and the University of Minnesota and the public private investment into that area. So right now out of the gate for this coming year. There are four buildings that are interested in connecting to the first phase of the system but the capacity of the system is fairly limitless so once it's infrastructure is in place all new development in that area would have the potential to connect how new Issaquah for thermal energy and as Minnesota and early adopter in the US. So it's actually been around for at least over twenty years. Most of the applications are in northern Europe Netherlands Scandinavia where? There's over a thousand sites there are not A lot of these in the US so this is absolutely a place for Minnesota to lead that combination of are forward thinking policy on clean energy. The city of Minneapolis has made huge commitments to decarbonised the city and are looking at ways to get away from natural gas as their biggest carbon contributor so this technology is going to be A little bit newer for the country and a little bit newer for Minnesota. But the replica. Ability is really high so once we get the tower side project up and running there are actually three other projects being studied in the state of Minnesota because that Geo

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