N.Y. Public Service Law § 88: Defense in case of excessive charges for steam heat

§ 88. Defense in case of excessive charges for steam heat. If it be

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

collection of any charge for steam for heat or power, 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.