Submerged closed loop heat exchanger systems variance considerations addition

This bill (SF 2638) modifies Minnesota's water well regulations to create a new process for granting variances related to geothermal systems. It directly affects applicants installing submerged closed loop heat exchangers (used for heating/cooling buildings) who face challenges meeting standard well-spacing requirements. The bill requires the commissioner to consider variance requests if strict compliance would create an undue burden, specifically evaluating factors like optimal well spacing for thermal performance and minimizing piping to reduce energy loss. It does not change existing rules but adds this specific variance pathway for geothermal systems.