Summary: Revises Tariff WN U-28, Schedule 75 - Decoupling Mechanism - Electric. The estimated annual revenue change associated with this filing is a decrease of approximately $20.5 million. Residential customers taking service on Schedule 1 and 2, using an average of 932 kilowatt hours per month would see their monthly bills decrease from $88.82 to $84.24, a decrease of $4.58 or 5.2 percent.