N.Y. Public Service Law § 75: Defense in case of excessive charges for gas or electricity

§ 75. Defense in case of excessive charges for gas or electricity. If

it be alleged and established in an action brought in any court for the

collection of any charge for gas or electricity, that a price has been

demanded in excess of that fixed by the commission or by statute in the

municipality wherein the action arose, no recovery shall be had therein,

but the fact that such excessive charges have been made shall be a

complete defense to such action.