Forget roaring lawnmowers and fuel-guzzling tractors. Today's solar companies are turning to flocks of sheep to trim grass and control weeds under solar panels. These eco-friendly grazers easily ...

Some of the thickest hay in the meadow at Jack’s Solar Garden, in Longmont, Colorado, is on the west side under an elm tree. The tree offers shade, absorbs the brunt of afternoon sun, and keeps more ...