(2) Utility plans may provide for a credit against future curtailment for a customer who has already accomplished a reduction in demand for the utility’s service by installing an alternative energy device or by weatherization or other installed conservation measures equivalent to the proposed level of curtailment. Where the level of curtailment exceeds the demand reduction produced, by the conservation measures or installed alternative energy device of the customer, the utility plan may provide for credit against the level of curtailment ordered to the extent of the demand reduction produced by the conservation measure or alternate energy device.
(3) The commission shall approve the feature of any plan concerning such credit against curtailment to the extent of the demand reduction produced and shall not penalize either the utility or the customer, in the event of a curtailment order, under ORS 757.720 for the amount of reduced demand. [1973 c.309 §2; 1975 c.606 §10; 1979 c.355 §1]