Minn. Stat. § 216I.10: EXEMPT PROJECTS.

Subdivision 1. Permit not required.

A permit issued by the commission is not required to construct:

(1) a small wind energy conversion system;

(2) a power plant or solar energy generating system with a capacity of less than 50 megawatts;

(3) an energy storage system with a capacity of less than ten megawatts;

(4) a transmission line that (i) has a capacity of 100 kilovolts or more, and (ii) is less than 1,500 feet in length; and

(5) a transmission line that has a capacity of less than 100 kilovolts.

Subd. 2. Other approval.

A person that proposes a facility listed in subdivision 1 must (1) obtain any approval required by local, state, or federal units of government with jurisdiction over the project, and (2) comply with the environmental review requirements under chapter 116D and Minnesota Rules, chapter 4410.