*Estimated savings based on a projected annual utility rate increase of 3.16% over the life of the system. Actual savings will vary. Savings depends on several factors, including product type, system production, geography, weather, shade, electricity usage, full utilization of the 30% solar Investment Tax Credit by the system owner, and utility rate structures and rate increases. Analysis based on customers who enrolled with Sunrun between October 15, 2014 and October 15, 2015. See sunrun.com/save20 for details.