Amanda Mason:

If the sheep weren't here, the grass would be growing to about this height, which would create a problem for the solar panels, because the solar panels are moving in order to capture the sun.

And if the grass is too tall, then they only collect about half of the energy needed.

The solar field provides power to 211 homes per year. So, every solar panel matters. And that means every sheep needs to do its job, which isn't without its challenges, including protecting them from predators, such as eagles and coyotes.

Enter Luciano and his canine friends. At least three dogs are responsible for this herd of herbivores.