Thanks for the advice so far, will be using polystyene boxes to bring back from butcher.
The reason I asked the question was that at present we do not have electric connected to the holding, we only grow veg, so dont really need it just use a geni for light and odd times we need power. Has anyone experience / comments with solar refridgeration, remember reading an article on a CSA that were looking into it to store fruit, cant remember the name or where I read it.