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Getting quotes from multiple Vendors on a 10kW install. This is for a residential install in South Florida. All things considered, most Vendors are recommending a grid-tie 10 kW system since we have net metering with FPL. Nothing fancy in terms of battery backup.
Here are some specifics:
1) Over the last 24 months we have averaged 2400 kWh of usage per month. Obviously higher in the summer and lower in the winter
2) Have already done energy saving measures in terms of conversion to LED lighting, dual speed pool pump, instant Hot Water heater, Ecobee thermostat etc.
3) Comfortable staying in FPL's Tier 1 designation. If we go with the max of 10 kW, we should be able to generate about 50% of annual energy needed for our home according to PVWatts. In my case, net metering should fit just fine since I dont expect to have any energy credits after 12 months.
4) Roof line - Here is where Im getting conflicting opinions. If you look at the pictures below the Vendors are taking different approaches to what roof lines to use. This directly is impacting the inverter choice. Im more comfortable going with the option that uses the rear roof areas which are east, south and west (going clockwise).
Question:
1) Im torn between a string inverter and the SolarEdge soltution that both propose. With the three separate roof faces I dont understand how a dual MPPT inverter will work. Would my efficiency be that much worse than a SolarEdge inverter?
2) I understand that some string inverters allow multiple inputs into a single MPPT. Would a combination of East/West on one MPPT and then the South facing panels be on the other MPPT work?
3) Any other comments on the approach?
Quotes: PV.PNG
Roof selection Vendor 1: PV1.PNG
Roof selection Vendor 2: image_9406.png
Here are some specifics:
1) Over the last 24 months we have averaged 2400 kWh of usage per month. Obviously higher in the summer and lower in the winter
2) Have already done energy saving measures in terms of conversion to LED lighting, dual speed pool pump, instant Hot Water heater, Ecobee thermostat etc.
3) Comfortable staying in FPL's Tier 1 designation. If we go with the max of 10 kW, we should be able to generate about 50% of annual energy needed for our home according to PVWatts. In my case, net metering should fit just fine since I dont expect to have any energy credits after 12 months.
4) Roof line - Here is where Im getting conflicting opinions. If you look at the pictures below the Vendors are taking different approaches to what roof lines to use. This directly is impacting the inverter choice. Im more comfortable going with the option that uses the rear roof areas which are east, south and west (going clockwise).
Question:
1) Im torn between a string inverter and the SolarEdge soltution that both propose. With the three separate roof faces I dont understand how a dual MPPT inverter will work. Would my efficiency be that much worse than a SolarEdge inverter?
2) I understand that some string inverters allow multiple inputs into a single MPPT. Would a combination of East/West on one MPPT and then the South facing panels be on the other MPPT work?
3) Any other comments on the approach?
Quotes: PV.PNG
Roof selection Vendor 1: PV1.PNG
Roof selection Vendor 2: image_9406.png