Napa vineyard powered by floating solar cells

For the Far Niente Winery located in California's Napa Valley, an acre of land is more valuable than gold, so finding space for solar panels is tough -- and costly. The solution? To float the panels on their irrigation pond, using new photovoltaic technology. "Floating solar", backers say, could be a boon for farming and a range of other industries. Duration: 02:24