§ 135-f. Energy audits. 1. Upon the request of either an eligible customer or a landlord, each utility shall conduct an energy audit of the customer's residential premises or the landlord's multiple dwelling and promptly provide the results of the audit to such customer or landlord in a manner prescribed by the chairman. No charge shall be made for such audits. In addition, on or before March first, nineteen hundred eighty-two, each utility shall, as part of the promotional program established by the chairman, (i) inform each of its eligible customers in writing that an energy audit of the customer's residential premises is available without charge, and (ii) inform each landlord in writing that an energy audit of his multifamily dwelling is available at a charge which shall be set by the chairman and not exceed five hundred dollars for each building; except in multiple building complexes, heated by a single, central boiler system. In such cases, the commission shall set fair and reasonable audit fees. A customer or landlord shall only be eligible for one audit under this section, provided however, that a customer who received an audit prior to the inclusion of solar or wind energy systems within the home conservation plans authorized by this article shall be entitled to a second limited audit to consider the energy savings and costs that would result from adding solar or wind energy systems to his premises. 2. Each audit shall include:

(a) estimates of the energy conservation measures, if any, needed to comply with applicable minimum criteria;

(b) estimates of available options for meeting such criteria, together with their relative costs and pay-back periods, and relative potential energy and cost savings on a monthly and yearly basis, a comparison of initial cost and pay-back periods for customer installation and for contractor installation and the price of fuel on which any comparison is based;

(c) for the purposes of this section, the term "energy conservation measures" shall mean, when used with respect to audits provided landlords, those measures set forth for multifamily dwellings in Title VII of the National Energy Conservation Policy Act together with such other measures consistent with the standards of this article as the chairman shall specify.