The RES program offers qualified Washington Gas customers a discounted rate in those months when the need is higher. Thus, the amount of assistance is higher during the coldest winter months and lowers from spring to fall. The customer will be charged the regular rate for the other months. Customers who qualify for service will be classified according to annual household income by the District Department of the Environment. Once certified, a client is eligible to participate in the RES program for one year and must re-apply each year for certification to participate in the program.

The maximum RES credit (after adding the discounts for all six months between November and April) applicable to each of the three classifications is as follows: in classification C, a RES customer could receive a total discount up to $142.02; in classification B, a RES customer could receive a total discount up to $151.03; in classification A, a RES customer could receive a total discount up to $189.08.