Edmond Solar Estates

Edmond, OK

Project Details

Retrofit
36 roof mount panels
Micro and string inverters
15,400 kWh annual production
4,900 ft2 Residence Roof Size, 2,300 ft2 Workshop Area

Project Description

To achieve the maximum benefit from the Time of Use (TOU) rate offered by their electric utility, the Ellis family installed a solar PV array sized to completely offset their electric consumption during high-cost, peak periods. In addition to monthly net metering of peak and off-peak periods, the TOU rate offers substantially lower electricity prices during off-peak hours. The solar and TOU combination complements their current all-electric geothermal heat pump system, which provides heating, cooling, and hot water for their home and workshop along with heating for their pool.

Installation Details

This project features a whole home, retrofitted solution toward achieving energy independence. Prior to solar, Comfortworks installed a high-efficiency geothermal heat pump in the home and workshop, with spray foam insulation in the workshop. A large pool with a waterfall was added, with geothermal heating the pool water. Geothermal helped lower the home’s energy consumption allowing the solar array to meet peak electricity demands. Microinverters help minimize occasional tree shading. For additional savings, a special heat exchanger provides free pool heating anytime the geothermal system is cooling the home.

Savings

Utility bill before solar: $3,600
Utility bill after solar: $2,400
Total savings: 33% savings

Estimated savings: $100 per month
Energy offset: 133% of peak kWh use and 25% of overall kWh use
Estimated production: 15,400 kWh/year

Contractor

Comfortworks

Electrician

Utility Company: OG&E
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