MN Power customers can get a substantial rebate with a solar installation in 2021
https://www.mnpower.com/Environment/SolarSense/
Find out the solar potential of your home with this interactive map of Duluth
https://maps.umn.edu/DuluthShines/
Information regarding the Federal Tax Credit
https://www.energy.gov/sites/prod/files/2020/01/f70/Guide%20to%20Federal%20Tax%20Credit%20for%20Residential%20Solar%20PV.pdf