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San Rafael Solar Energy Case Study, Dufficy Family

Dufficy Family says Goodbye to Their Electric Bill

residential solar case study

Project Overview
Location San Rafael, CA
System Size 11.7 kW
Surface Area 842 sq. ft.
Product SunTech 245 watt
Production 17,170 kWh/year
# of Solar Panels 48

This San Rafael family was motivated to reduce their electricity bill of over $4,000 per year and achieve energy independence. With a keen eye for positive returns on investments the Dufficy family immediately saw the financial benefits of solar, so it was an easy decision to “go green”.

This powerful system consists of 48 solar panels, each controlled by an Enphase microinverter to maximize energy production by 10–12% and reduce the impact from shading. Microinverters also allow the homeowner to closely monitor each panel’s performance.

The system was designed using an aesthetically pleasing all-black panel. The Dufficys now have more money in their pockets while reducing their carbon footprint.

solar savings chartBenefits

  • Saves Dufficy family over $4,000 in electric bills annually
  • Shields the Dufficys from electrical rate increases
  • Will realize ROI in 5-6 years
  • Will reduce CO2 emissions by 7 tons annually, equivalent to eliminating over 16,000 miles of driving each year

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