That depends on how many sun hours or/and wind you’ve got at your place, how much panels you can install and of course how much light you’re using. I don’t have the knowledge to do the math on that.
Is there a free market to buy (sustainable) electricity from at your place? Or are you forced to buy from the local/regional provider?
Need to get off the grid fast. Is a gas or diesel generator my best option? (fedia.io)
The energy suppliers in my area all have contracts I do not agree with. My gas & electric service may be cut in a couple weeks....
The sun is blue-green (eclipse2017.nasa.gov)