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New Study Finds Solar Panels Are "Contagious"

A new study finds that you're more likely to install solar panels if other people in your zip code have them.


Are you more likely to install solar panels if your neighbor has them? A new study (PDF) out of Stanford says that you are. More specifically, it finds that for every 1 percent increase in the number of installations in a particular zip code, the time until the next adoption of solar decreases by 1 percent. Or, as Vote Solar's Adam Browning put it: Solar is contagious!

So just how quickly can solar power spread as this snowball effect gets rolling? John Farrell of the Institute for Local Self-Reliance's New Rules Project projects the trends forward:

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