We live close to where Obama is going to visit thursday, in the UP of Michigan.
It sounds like you already have wind, and storage batteries with a converter will handle your lighting. If you decide to generate your electricity with steam, you will need a small high pressure boiler system separate from the low temp radiant heat system. It requires high temperature steam with at least 80 psi of sustained steam output to run a turbine.
The biggest advantage they provide is, they are easy to work with, repair and maintain.