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2
Comparing question, I know cost per watt is maybe the best, but any opinions on brand or other factors to make a decision? I was leaning towards the Panasonic.
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| Option 1 | Option 2 | Option 3 | Option 4 | Option 5 | |
|---|---|---|---|---|---|
| Price per Watt | $2.75 / W | $3.20 / W | $2.95 / W | $3.09 / W | $3.26 / W |
| Net Investment | $19,943 | $22,075 | $23,624 | $23,360 | $23,638 |
| Installation Warranty | 25 years | 25 years | 25 years | 25 years | 10 years |
| Panel Manufacturer | Silfab Solar | Q Cells | CertainTeed | Panasonic | Silfab Solar |
| Panel Model | SIL-370 HC Silfab Prime | BLK-G10 365 Q.PEAK DUO | n/a | EVPV360K EverVolt BBS | SIL-370 HC Silfab Prime |
| Panel Output Warranty | 30 years | 25 years | 25 years | 25 years | 30 years |
| Year 25 Production Estimate | 10638 kWh | 11843 kWh | 11243 kWh | 11373 kWh | 10762 kWh |
| Inverter Manufacturer | Enphase Energy | Enphase Energy | SolarEdge Technologies | Enphase Energy | Enphase Energy |
| Inverter Model | IQ8PLUS-72-2-US | IQ8PLUS-72-2-US | SE10000H-US [240V] | IQ8H-240-72-2-US | IQ8M-72-2-US |
| Inverter Type | Microinverter | Microinverter | Inverter with power optimizer | Microinverter | Microinverter |
| Panel-level Optimization | Yes | Yes | Yes | Yes | Yes |
| Inverter Warranty | 25 years | 25 years | 25 years | 25 years | 25 years |
| Number of Panels | 28 | 27 | 26 | 30 | 28 |
| Watts per Panel | 370 W | 365 W | 440 W | 360 W | 370 W |
| Number of Inverters | 28 | 27 | 1 | 30 | 28 |
| System Size | 10.4 kW | 9.86 kW | 11.4 kW | 10.8 kW | 10.4 kW |
| Year 1 Production Estimate | 12,356 kWh | 13,630 kWh | 13,719 kWh | 12,324 kWh | 12,500 kWh |
| Guaranteed Production | 87% | 100% | 100% | 100% | 100% |
| * Utility Electricity Price | 19.1¢ / kWh | 19.1¢ / kWh | 19.1¢ / kWh | 19.1¢ / kWh | 19.1¢ / kWh |
| * Solar Electricity Price | 7.2¢ / kWh | 8.6¢ / kWh | 8.0¢ / kWh | 8.5¢ / kWh | 8.8¢ / kWh |
| * Payback Period | 8.1 years | 9.0 years | 8.7 years | 9.4 years | 9.5 years |
| * Price After Incentives | $16,668 | $22,075 | $20,031 | $20,020 | $20,554 |
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