are required to buy electricity for customers who do not choose an
alternative electricity supplier. Customers are charged for electricity -
called Standard Offer Service (SOS) - under rates approved by the Maryland
Public Service Commission. Under a settlement with the Commission, Pepco
began offering SOS supply at market-based rates in Maryland on June 1,
Each year in June and
October, supply rates are adjusted to reflect the cost of power that we buy on
behalf of our customers who do not contract with an alternative supplier.