Ambrose Vurnis, NBCWashington.com
Residents went to great lengths to get Pepco's attention to power outages in late August.
The Maryland Public Service Commission fined Pepco $1 million for failing to maintain its system properly over a period of years and subjecting customers to long outages too often.
The commission said the case was initiated after it received an unusually high number of complaints from customers and elected officials regarding Pepco's reliability. Formal proceedings began in August 2010.
In addition to the fine, the PSC's order requires Pepco to file a detailed and updated work plan for the next five years that includes measures to improve communications and service restoration by Feb. 21.
Wednesday evening Pepco said it had just received the 94-page order and will comment after reviewing it.