There is no doubt that being off-grid has its problems, and it is not always the cheapest way to get the energy you need. Even so, pioneers like Perez have proved that it can be done, and without giving up a 21st-century lifestyle: “I have got five personal computers, two laser scanners, two fridge-freezers, a microwave, a convection oven, vacuum cleaners - you name it,” says Perez.
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