Minnesota provides a sales tax exemption for utilities consumed for industrial and agricultural production.
Download the MN Department of Revenue Certificate of Exemption
Electricity used by industry to produce retail items are exempt from state sales tax if the power is used directly in the production process. The exemption does not include electricity used for space heating and lighting. However, electricity for operating air compressors, instrumentation and control systems, and production machinery is exempt.
Minnesota is allowed a heat exemption from November through April to members whose primary source of heating (source which heats the largest square footage of home) is electric. Minnesota members are required to fill out and sign an exemption form.