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This homeowner knows how much direct sunlight they get with this great pool! They wanted to have a solar electric system installed on their roof to produce energy for their Bethany, NY home.
This 7,200 W (7.2 kW) grid-connected solar electric (PV, photovoltaic) system was installed as a roof-mounted array of thirty-two (32) SunPower 225W solar modules oriented South on the house roof. The array is mounted flush to the roof surface using a UniRac Sunframe mounting system and low-profile Thompson Technologies Flat Jack standoffs with flashings to increase air circulation and ensure a water tight connection to the roof. The system is configured electrically as four (4) DC circuits (strings) of eight (8) series connected modules providing input to one (1) SMA 7000m, 7.0kW inverter. System power production (kW), daily and cumulative energy production (kWh), and house consumption is provided by a SunPower monitoring system, as well as by a digital display on the inverter and an electromechanical meter. As designed, this system should generate an average of 21.7 kWh/day = 661 kWh/month = 7,931 kWh/year, where daily energy production is both weather and seasonally dependent. This energy production is equivalent to 57% of the customer's present home electrical usage, and corresponds to a CO2 (greenhouse gas) emissions savings of 9.8 kg CO2 per day = 297 kg per month = 3,569 kg per year.
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