Cover photo: The Elk Hill solar farm near Mercersburg in Franklin County, PA, is a 48-megawatt facility that came online in 2021 and 2022. (Dave Harp) Solar may be the cheapest and easiest-to-install energy source driving the nation’s push for renewable power. But in rural hamlets across the Mid-Atlantic, efforts to unleash widespread sun-based power are encountering pushback from local officials and residents.