If you're producing your power you'll do just fine.
You're going to have to live near a waterfall.
Aahahah that would be awesome! I have heard of solar panel mines though, which I thought was quite interesting. An electrical engineer did one on Youtube. I suppose the nearest country to me with a lot of sunshine is probably Spain. But I think big loses would be had during winter.
For solar panels to be profitable, and at current technology and price, it will take at least 5-8 years. This depends on which local electricity cost you are comparing to.