N.Y. Public Service Law § 135-m

§ 135-m. Applicability to prior installations. In the event any\neligible customer installs energy conservation measures subsequent to\nthe effective date of this act, but prior to the adoption of a home\nconservation plan by his gas or electric utility, and the work performed\nor obtained by such eligible customer would qualify for financing under\na subsequently adopted plan, such eligible customer shall be eligible\nfor retroactive financing and participation in the plan adopted by his\nutility in accordance with the provisions of this article.\n