N.H. Rev. Stat. Ann. § 38:33

In matters over which the Federal Energy Regulatory Commission does not have jurisdiction, or has jurisdiction but chooses to grant jurisdiction to the state, the commission shall determine, to a just and reasonable extent, the consequential damages such as stranded investment in generation, storage, or supply arrangements resulting from the purchase of plant and property from a utility and shall establish an appropriate recovery mechanism for such damages. The commission need not make such a determination when the municipality and utility agree upon the sale of utility plant and property.