I'm an apprentice electrician who actually just finished installing a 1.8 megawatt solar field a few weeks ago. I can tell you that I know people that produce more than they use w panels on their roof. A cape about 1,400 sqft home uses about 15-20 5x3' panels. They're producing more. That's just for a reference. I mean, your home has to be facing solar south, depends on if your roof is flat all the way across, or you may have land to build it. But also keep in mind like others said, my example is just a house without a grow, so you could at least cover your normal used electricity and take a chunk outta your grow bill. Plus it's free and clean energy. Best part of all, government rebates up the ass. And with a battery bank, you could lose power and maintain normal elec usage in your home for 2-3 days before they needed to be recharged (but they always are charging sun or clouds, some even at night)