I'll use 12 volt LEDs for most of the lighting. I'll build a 400 gallon water tank in the basement which will fill by a windmill powered pump, with a boat-type 12 volt pump and pressure tank. Overflow from there will go to the barn, and overflow from that to the garden. Hot water will be solar augmented by the wood stove and then propane. Heat will be a wood stove with a propane furnace backup. I'll probably do a heat-energy-battery under the basement floor to even out the heat.

I'm not doing 12 volt marine refrigeration. I looked at those units at the Annapolis boat show. They're flimsy and overpriced and not frost free. I'll go for a standard apartment sized unit. It will be the one energy hog we'll have.

This is the solar array I'm considering- http://www.wholesalesolar.com/solarpowersystems/medium-ac-home-off-grid-solar-power-system.html. Nine 245 watt solar panels. The whole thing will run around $10k or so installed, not a bad deal when you consider the cost of running power lines a quarter of a mile into the land and then paying $2k to $3k a year for power.

I'm still researching solar to see how effective it will be at 74* 20" latitude. I may supplement solar with something like a D400 wind generator, or maybe even a water turbine since I have flowing water on the land.

Basically, I'll be combining research I did in college 30 years ago with what I've learned over the years about marine systems, using state of the art technology to achieve what really couldn't have been done at that latitude in the past.

Not going to do air conditioning. It's not needed up there.