A case set for trial next week is expected to test Minnesota’s “Buy the Farm” law, which is meant to require utilities building high-voltage power lines to buy out farms in the way if affected landowners demand it. The case pits the CapX2020 project against Cedar Summit Farm near New Prague, a dairy that fills glass bottles on site and feeds its cows a 100% grass diet. Dave and Florence Minar say they can’t properly operate an organic dairy farm under a 345,000-volt power line, so they want CapX2020 to buy their land and pay the costs of relocating their operation. CapX2020 is an initiative by 11 utilities to expand the region’s electrical grid. It is challenging the reasonableness of the demand.