It took two years for Camp Denali to install its new 90-kilowatt array at the end of the Park Road, near Wonder Lake.
The plan also includes ski trail grooming near the park entrance and snowshoe and mushing access upgrades at Mountain Vista.
The extent of next summer’s road closures will be unclear until crews begin work at Pretty Rocks.
Officials are studying whether the existing path of the park’s 92-mile road can be spared from a creeping landslide. Scientists say it could be a preview of Denali’s future as permafrost thaws.