Before 1991, the program gave rebates only to homeowners, who each received $180.
Several million class members were given rebates of about $50 each, while other class members received more.
This stated that railroads were not allowed to give rebates to favored companies any longer.
Among other things, they fear that such programs could encourage doctors to practice risky medicine to increase success rates and avoid having to give rebates.
City officials said that appeared less constitutionally risky than giving rebates to individuals.
The company gives rebates and lower rates to customers who use less power during times of peak energy demand.
To mollify stores, major record distributors are giving rebates to help in the transition.
Manufacturers frequently give retailers rebates at the end of the fiscal year if sales reach certain predetermined levels.
The drug companies already give substantial rebates to the states on virtually all drugs purchased through their Medicaid programs for the poor.
Earlier this week, the company said that it would give customers rebates for lost Yankees games but offered no specifics.