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How Home Solar Warranties Work

Going solar is a long-term investment. You trust it will be on your roof for many years, quietly generating the clean energy you need and lowering – or in some cases...

The Solar Company Making a Profit on Poor Africans

M-Kopa plans to be a $1 billion company by selling solar panels to rural residents—and providing them with credit. Tom Opiyo is the best-performing salesperson at...