Should be easy to do, in this fashion:
1.) start with propane fuel system and powerful genny; with auto-start and capacity, power for any load is always available, at the cost of genny running all the time.
a.) have propane service install 500gal (or larger) propane tank ... this is your fuel system.
b.) connect propane to large (minimum 12kw) propane generator.
- if needing auto-start, use a generac 22kw guardian standby genny or equivalent
- if not needing auto-start, use something like a duromax df12000eh or equivalent.
- both of these generate 120v/240v power; if you run the genny whenever you need power, you're done.
2.) add inverter/charger and battery bank, if you don't want to run the genny all the time; genny will now only run about 4hrs/day
a..) feed all the power into a magnum ms-4024-pae inverter (pre-wired with mmp and midnite classic 150 mppt); this inverter/charger will feed the power into a lifepo4 battery bank, and excess power will go to house/shop stuff while in charging mode. a pre-wired unit saves lots of wiring grief, and preps you for solar.
b.) 24v lifepo4 battery bank (two 12vx300ah amperetime batteries); this stores power from the genny, and feeds the inverter/charger for about 20 hours of the day. gets charged from genny about 4hrs per day.
3.) add solar panels to reduce genny runtime. feed into midnite classic portion of pre-wired unit. done. now genny runs only when solar isn't keeping up with load.
This is all in "off-grid" fashion, and you can just stay off-grid and be done. If, later, you want to go back on-grid, this will become a parallel system of power to the grid (not grid-tied). sort out transfer swiches and such so that only one system or the other is in control and feeding house/shop.
Such a system is powering just about anything, at 24v, for us. Parallel more inverters for larger loads, or increase system to 48v, and so on, if your loads are even larger, after ensuring everything is propane-based before being electric-based (propane hvac, on-demand water heaters, etc). Increase any piece of this to match your loads/capacity requirements (larger battery bank, etc)
Even if you do go back on-grid, all of this is there for backup if and when grid goes down ...
Scale all the pieces to fit your budget ...
Hope this helps ...