Solar power is contagious. These maps show how it spreads.

Brad Plumer for VOX:  Rooftop solar is expanding rapidly in the United States — by some estimates, a new system goes up every four minutes. There are plenty of reasons for that, from falling prices to generous federal subsidies to innovative leasing schemes.

But there's another, little-discussed factor here: Residential solar power is contagious. Yep, contagious. Studies have found that if you install solar photovoltaic panels on your roof, that increases the odds that your neighbors will install their own panels.

SolarCity, the largest solar installer in the United States, just published some fascinating data on this "contagion" effect. The company has installed 230,000 rooftop systems nationwide (often by allowing customers to lease panels rather than buy them upfront). It says fully one-third of customers were referred by a friend or neighbor.

SolarCity has also made some neat animations showing the "contagion" effect in action.  View here:

Comments (0)

This post does not have any comments. Be the first to leave a comment below.


Post A Comment

You must be logged in before you can post a comment. Login now.

Featured Product

RBI Solar Ground Mount Solar Racking

RBI Solar Ground Mount Solar Racking

RBI ground mount solar systems are designed and engineered for each customer's site specific conditions to minimize the field installation labor and require no field welding, drilling, or other on-site fabrication. Our meticulous project planning and precise execution combine to provide you with solar racking solutions that are tailored to the unique conditions of your location. RBI provides a wide range of PV mounting systems in various sizes to offer freedom and flexibility to support every type of PV module. RBI Solar ground mount system is a perfect utility scale solar racking solution with two models classified by Intertek to UL subject 2703. ETL Classified systems include proven models GM-I and GM-T which have been used on many large commercial and utility scale solar racking projects across the country.