25 People Shaping the Future in Tech, Science, Medicine, Activism and More

The inventors, entrepreneurs and disrupters who are changing (and maybe saving) the world one brilliant idea at a time

Load Previous
Billy Parish: Bringing Solar Power to the Masses
David Paul Morris/Bloomberg/Getty5/25

Billy Parish: Bringing Solar Power to the Masses

The Green Revolution must be financed. And Billy Parish, 36, has built a billion-dollar business that has yoked the financial muscle of Wall Street to the challenge of powering the nation's homes with clean, efficient energy. Solar panels may be getting cheaper, but a single rooftop installation can still cost $30,000. In the past, homeowners buying panels had to either front the money or work out a loan from a bank. Parish's company, Mosaic, has simplified this market by offering a solar mortgage that customers pay down using the savings from their electricity bill. Even accounting for interest payments of five or six percent, typical homeowners will save tens of thousands of dollars in electricity costs over the life of the system – creating a windfall for reducing their carbon footprint. "He's trying to bring to scale the changes we most need," says Bill McKibben, founder of 350.org. "If he was the model for entrepreneurs on our planet, we'd be OK." To date, Mosaic has financed more than $1 billion in rooftop installations. Parish considers it benevolent capitalism – business that can make money and do good. "It's one of the biggest climate solutions," he says. "And one of the biggest business opportunities on the planet." TD

Back to Top