N.H. Rev. Stat. § 21-I:19-f

There is hereby established a state energy investment fund into which shall be deposited moneys received by the state for participating in demand response, utility or public utility commission programs, energy cost savings distribution as defined in RSA 21-I:19-e, or the sale of renewable energy certificates, as defined by RSA 362-F:6, for state-owned renewable thermal and electricity projects. The state treasurer may invest moneys in the fund as provided by law, with interest received on such investment credited to the fund. Moneys in the fund shall be nonlapsing and continually appropriated to the division of plant and property to be used exclusively to fund energy efficiency or renewable energy projects and energy efficiency or renewable energy contracts; to reimburse the department of administrative services, division of public works design and construction, for costs of providing construction administration services including, but not limited to, design and oversight of design and construction of energy saving or renewable energy measures; and to reimburse state agencies for program expenses or completing energy saving or renewable energy measures.