Variance considerations related to submerged closed loop heat exchanger systems added.

HF 3716 adds a new provision (Minnesota Statutes § 103I.2091) allowing variances from standard water well isolation distance rules for submerged closed loop heat exchanger systems used in heating/cooling. It directly affects applicants seeking to install these geothermal systems near water supply wells, by requiring the commissioner to consider variance requests if strict compliance would create an undue burden. The bill specifies that variances must be evaluated based on factors critical to system efficiency, such as optimal well spacing for thermal performance and minimizing piping lengths to reduce energy loss. This change streamlines the approval process for these energy-efficient systems while maintaining water supply well protection standards.