Check out how power is managed on a big yacht: a bank of 8D-size or golf cart batteries powering 12V lighting, with a 120V inverter for running appliances, charged by solar panels, and/or a marine windmill, and a gas or propane diesel generator for backup during uncooperative weather. You don't have to spend a fortune on all this, as you can get bargains on golf cart batteries from Batteries Plus Inc, get the inverter etc on e-bay, and a good Chinese generator can be gotten amazingly economically. You have the advantage of not needing to be set up for marine conditions. Big advantage over the grid is no monthly bills. Heat using a wood stove with propane and/or diesel backup systems.
Tom- what you say about a boat is true but.. "bargain" batteries and inverters generally are crap for full time use.I have seen a lot of cheap stuff die out in less than a year.
12 volt systems are very limited, go with at least a 24V system. The savings in wire alone is worth it (you use thinner wire for higher voltages).
The prices on panels have never been lower than now. Do yourself a favor, buy trojan or surette batteries, flooded lead acid
a lot, maybe most of the folks around here are off the grid. not that the grid goes down a bunch, but it's an amusing twist when it does: the off grid folks with that "clueless, never realized" look on their face when confronted with "put out" utility customers after an outage.
funny you should phrase the question: "how much to have power run out to a home" because i've been toying with the concept of dedicating a vehicle to the containment of a (battery bank, charger, controller, inverter) which would suck off the grid when parked in front of the (electrified) airplane hanger, and then drive out to my digs where power would come in handy from time to time at various disperse locations.
call it a solution to a "distribution" problem rather than an availability issue
i like it when my rv juice
runs low i always plug
in a jimi tape right when,
then the guitar in charge
slow enough to stay ahead
of my heart beat,
then we, together,
dead jimi, low wattage frequency,
and my depressed circulatory
system make trans-universal harmony.
no matter my self-actuated
keep gettin beautifuller.