Some schools and ski lifts in the Colorado mountains have closed because of rolling electrical blackouts linked to problems in the area's natural gas system.
The Summit Daily reports Xcel Energy was cutting electrical power Friday to different parts of Summit County for 30 minutes at a time to keep furnaces from operating and conserve natural gas.
Xcel said it needed to reduce gas consumption while it tries to determine the cause of low pressure in the supply system.
The Summit School District closed elementary schools because of the blackouts. Arapahoe Basin, Breckenridge, Copper Mountain and Keystone ski resorts said some of their lifts were affected.
Xcel says about 17,600 customers are affected by the blackouts. The company says it does know how long the blackouts will continue.
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