An act relating to thermal energy networks

H.609 establishes a regulatory framework for thermal energy networks - pipelines that transfer heat between buildings to reduce emissions from heating and cooling. It clarifies that the Public Utility Commission (PUC) will oversee non-municipal operators of these networks, while allowing municipalities or fire districts to directly build, operate, and set rates for such networks without needing a PUC "certificate of public good." The bill defines key terms like "thermal energy exchange" (noncombustible fluid systems for heat transfer) and excludes cooperatives, landlords, or self-served entities from PUC jurisdiction. Fire districts can now fund these networks through local taxes, similar to existing fire protection or water infrastructure funding. This bill directly affects communities, fire districts, and private operators seeking to deploy district heating systems for emissions reduction.