4wD alternator/12v/self sufficient larder - possible?

[TomGoingWild]

I have moved back from Oz to start a mobile wild food festival business.

Plan is to go bush, come out with meat, meat inspected, chef-bizo partner comes up with top notch recipes - go to festivals across NZ sell it - be happy.

I have every sussed but....

The biggest headache is refrigeration.

Looking at chiller trailers, shrinking down cooled area.

Now can I get a 12V cooler (custom of course), then have it hooked up to landcruiser(12V) alternator, then have solar to top it up? (Am asking some solar guys about whether its possible, at a not crazy price)

I know engels and waecos, but need like 200-300L+ of fridge/larder.

Want to avoid Gennies, mains as much as poss.

Farking hairbrained I know, but this is the last hurdle -

[pruggerdore]

Have family on solar alternative power in northland. refrigeration consumes a lot of energy/power.
the only thing I see fitting the bill for you is gas fridge freezer's. gas technology is pretty efficent now days.
do you see enough meat being radially available long term. personaly think the different recipes will be enough for you to stand apart from mainstream vendors without the meat being wild