Well good DanNH that you have brought this topic back to today, practical applications.
Going off grid in your $'s case and those property obtaining with no grid connect without a $$,$$$ buy-in does have an appeal.
In mine with only a $12.00 a month per meter head (3 meters), plus a 6% local use tax surcharge on the actual consumption. Our big-hydro (still two nuke plants , now some wind farms, and NG peaker plants supplemented) is still just still $.0875 k/Wh USD. Most distribution here is done by local, very closely watched Public Until Districts. Their commissioners subject to local vote in/out. It really make no economical scene to do other than just mail them off monthly checks.
Problem. I have lost grid power six times since the third week of November. 20 minutes to 24 hours. Not a problem set that they can ever solve past the year around continuous road side trees trimming contracts.
We used to have fewer, but longer, annual outages when our corner of the service district area was served with one feed-in line set.
In the late 1980/s early 1990's this improved with a second feed-in line, then looped, redundant. We got actually spoiled with only one event created power outage a year.
It degraded to the current 6-9 time a year ~5 years ago with the system wide change over to remote, radio "cell" isolation interrupters installed. Very frustrating to be powered out unexpectedly and car hop just five mile in most directions and see lights and power. Prevue of the total loss of personal control have to given up to a true Smart-Grid.
So currently . . . nothing really a small personal gasoline/propane inveter generator cannot see us through.
Still. Wood for heat, for decades. More limbs, trees wind/ice/age coming down then we use. Just rotting.
So it is the power FREEDOM aspect that I pursue.
Not cost savings. Their "addictions" offered up will always be easier, cheaper. Egges always will be cheaper from a Big-Ag investment 100,000-1,000,000 "hen" egg-factory supported store.
Since FREEDOM is my goal why would I ever want to put myself under their thumb selling my made power back to then at ANY price? See the suck-you-back-in trap of that?
Adjacent neighbor just south gets 3-4X of my retail paid for his FED 15 year loan subsidized roof-top PV array for his measly 100-150 days a year of net excess. Mandatory: he must be grid connected WITHOUT any onsite storage for his highly subsidized PV array. Grid power goes down, and he has no power. They do not woodheat. Propane fireplace.
Out local PUD sell his PV and others and any wind farm Kw's as "green power" to subcribers for 2X of the regualr big-hydro/nuke rate.
Yes still a net loss out/versus in.
They make out by FED in-system generated Green-Power credits allowing then the lowest big-hydro wholesale rates.
Games, within games, within games.
Opt-out. Means in my case I will buy their normal Grid. Make my own when they fail me. Ha! Hope for the day they would fail completely. (only way my wife would not divorce me)
The real easy way to understand the true impact of each and every 15,000 mile a year driving plug-in EV vehicle is to know that is ONE whole four person, all electric household's annual use's worth of electrical energy.
You just used up one lower/middle class families whole energy budget in your green-spinning around.
NO solution to this but to dramatically decrease current grid electrically useages over and above the past three decades of per household reductions to be able to divert into increasing transportation usage then.
Or . . . Increase overall grid capacity proportionally to the increase in transportation diversion usage.
Why many of us 1970's/80's lead-acid battery electric vehicle enthusiast call electric cars as NUKE-cars, COAL-cars. Threaten to start sticky bumper-sticker slapping these new-shallow-thinking plug-in folk's vehicles with "NUKE-Powered", COAL-Powered", "ELITE Power Robber"
Batteries, indeed have gotten better. Motors, and controls gotten very Much better and energy use efficient..
STILL takes the same k/WHer's to replace the same gallon of gasoline, propane, diesel fuel. And these fuel power tech's and vehicles using these tech's have been continuously evolving better and better. A stretching out, moving target.
Light and medium hybrids NOT PLUGGED-IN have been the best advancement boon in the last 17 years.
No longer bleed off the slowing down and stopping energies as just waste brake heat. But recover, store, reuse.
Hydrogen talk just the RightElist's spin distraction until all the possible fossil fuel profits can be made.
J-I-C Steve Unruh