Off Grid makes me nervous. I know a few people that did it and they all ended up selling and moving to a house with power.
I would talk to the power company and see what the cost is to bring power there. In my case, I was asked how much power I will be using by filling out a form that they had that lists everything I plan on using the power for. I included barns, shops, two houses and all my power tools. They said that I met their requirement to run it to my place for free. If I remember correctly, it was close to 2,000 feet. They had to go across the highway, down the highway to my property line, then another 800 feet into my place. I think they installed ten poles just to get here.