Solar power?

I was just wondering how many people use solar power to run their grow room? How many atts is your grow room and how expensive it is to set up solar power?

I would say just using the sun itself would be 100% more efficient. I guess if you had to use it to save money on a conceal grow inside then that sounds awesome. Never tried it but hope it is worth the trouble with all that equipment. Even if it takes you a year to save money I say why not.