That’s what I’m afraid of but if natural shuts down where would diesel supply be
Well, at some point, all are vulnerable. But if you have solar with generator back up, depending on how often your generator runs to charge the bank, 100 gallons of diesel might last you a year or more (depending). Hypothetically, if you had a 7kw diesel gen-set drinking 1/3 gallon per hour and you ran it for 4 hours every 4 days to charge the battery bank (which you would probably only need to do from time to time in winter, depending on your solar array and power demands) you would consume 121 gallons of diesel annually. Not sure how secure the nat gas grid is. I know they have to pump and boost in the pipeline, but they have gas-powered pumping stations for that, but with diesel you are totally stand alone. Another option would be a propane tank to fuel the generator.
