N.Y. TAX Law § 1201-B

§ 1201-b. Additional credits against taxes administered by cities of\none million or more. Any person, corporation or other entity required or\npermitted to grant rebates or discounts on bills for electricity, gas or\nsteam in accordance with a local law adopted pursuant to article two-G\nof the general city law shall be entitled to a refundable credit for\nsuch rebates and discounts made, to the extent such credit is\nspecifically authorized by such article of the general city law, against\nthe amount of tax of be paid pursuant to any gross receipts tax imposed\nby a local law adopted pursuant to subdivision (a) of section twelve\nhundred one of this chapter. Notwithstanding any other provision of law\nto the contrary, no taxpayer taking a credit as authorized herein shall\nincur any increased liability for any taxes imposed pursuant to the\nauthorization contained in chapter seven hundred seventy-two of the laws\nof nineteen hundred sixty-six, as amended, by reason of such credit.\n