How Much Can You Save With Solar Panels? Just Ask Google

How much dough can you save if you install solar panels on your roof? The brains at Google—both human and artificial—can tell you.

Sourced through Scoop.it from: www.wired.com

IF YOU’RE CONSIDERING solar power but aren’t quite sure it’s worth the expense, Google wants to point you in the right direction. Tapping its trove of satellite imagery and the latest in artificial intelligence, the company is offering a new online service that will instantly estimate how much you’ll save with a roof full of solar panels.  On Monday, the company unveiled Project Sunroof, a tool that calculates your home’s solar power potential using the same high-resolution aerial photos Google Earth uses to map the planet. After creating a 3-D model of your roof, the service estimates how much sun will hit those solar panels during the year and how much money the panels could save you over the next two decades. “People search Google all the time to learn about solar,” says Google’s Joel Conkling. “But it would be much more helpful if they could learn whether their particular roof is a good fit.”   –  As Google notes in a blog post announcing Project Sunroof, the time is ripe for such a tool. “This is an extremely useful thing,” says Roland Winston, a professor at the University of California, Merced, who specializes in solar energy. “Solar technology is cheaper than ever.” Indeed, others have developed services along these lines, including academicsand companies like Geostellar and Mapdwell.

But Google’s service is a bit different. It has Google behind it—and the company is taking a particularly comprehensive approach. In analyzing satellite images of your home, Google uses “deep learning” neural networks to separate your roof from the surrounding trees and shadows. “Even a strong solar advocate like me wouldn’t recommend putting solar panels on your trees,” Elkin says. Mimicking the web of neurons in the human brain, this sort of neural network is the same technology used to recognize faces on Facebook or instantly translate from one language to another on Skype.   Project Sunroof also simulates the shadows that typically cover your home on any given day (see animation above), and it tracks local weather patterns. “We’re able show how much energy is hitting each part of your roof,” Conkling says. And if you like, you can further hone that company’s calculations by providing how much you typically spend on electricity (otherwise, the service relies on public utility rates in your area).

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