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Beki_EONNext
I ran a CAT5 cable down from the farmhouse for phone and broadband, so that wasn't exactly completely off grid!
Hardest part was getting back from a 60 mile round trip from the nearest B&Q to find I'd forgotten something vital, like door hinges or screws.
Writing my own software and building the electronics to control and monitor the PV and solar thermal was particularly satisfying.
Coming in one day in torrential rain to find there was a leak in the roof...not so satisfying.
The original plan was to bolt a second body onto the first to build a bedroom and a living room, but 'her indoors wanted a more 'conventional' house.
The truck bodies are 'leftover' from a local horsebox company. They take an old 20ft lorry, remove the cargo box and then coachbuild custom horse transporters. They sell the surplus bodies for £ 400. We had four, so two for my farmer mate for feed stores and two for me for this project. As we had four, they delivered them for free!