A prepper will already be rotating out food and water anyway. Solar is still a good idea, but so is having fuel powered generators. Might not be too much sunshine in situations like a nuclear winter or geoengineering gone wrong.

>Diesel can't be stored forever. Maybe a few years with stabilizer. So you need to remember to rotate it out (and have some use for the fuel you're rotating out). Much

>Much easier to just buy some solar panels to recharge the electric truck.

Much easier to use it in your diesel-powered vehicle.

And then you have much, much energy in your stockpile.