Section 2(1)(t) in The Central Electricity Regulatory Commission (Indian Electricity Grid Code) Regulations, 2010
(t)"Demand response" means reduction in electricity usage by end customers from their normal consumption pattern, manually or automatically, in response to high UI charges being incurred by the State due to over drawal by the State at low frequency, or in response to congestion charges being incurred by the State for creating transmission congestion, or for alleviating a system contingency, for which such consumers could be given a financial incentive or lower tariff;