The state's utility regulators are asking Marylanders to conserve energy as demand caused by the cold snap puts extra pressure on the region's power grid.
Higher electricity use means the regional grid operator "is managing a very tight power supply, especially in the BGE and Pepco regions," the Maryland Public Service Commission said in a statement Thursday. Officials also urged customers to conserve power during the earlier run of freezing temperatures this month.
Conservation is most needed weekdays from 6 a.m. to 9 a.m. and again from 3 p.m. to 7 p.m., the Public Service Commission said. Customers can take steps such as setting their thermostats lower, turning off lights and putting off the use of washing machines and other major appliances.
The agency also warned customers not to warm their homes in a way that will produce carbon monoxide gas, such as using heaters with open flames.
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