RobND
New Member
Hello all!
Been lurking quite a bit and wondering if I could get some thoughts.
We have a 26KW Roof-Mounted Solar installed (late 2023), 66 395w panels, 48 are DC (19KW) and 18 (7KW) have AC micro-inverters on them running into the Gen port on the Sol-Ark. We also have just one Sol-Ark 15K-LV inverter. Naively, I'm seeing the Sol-Ark is "grid sell" limited to 16KW and we keep getting clipped at 15.5KW nominal power selling back to the grid at peak times during the day.
Is this normal? Should we have had two Sol-Ark's installed for this size of system? Anyway to increase the grid sell over 16KW? Feels like the array was too large for the inverter.
And I'm not seeing us hit any more than 19KW nominal power on the peak of day, with full sun. Granted it is Jan-Feb, but is that to be expected this time of the year with 30 degree angled panels at 47 deg lat, no shading? PV Watts has it listed as being able to hit 23KW with my assumptions. I know getting 395w per panel is not realistic, and 295w is their real world optimal number (PMax?) and I think I'm getting topped at close to that (275w peak power output). Sound about right for panel output before we consider Sol-Ark limits?
Thanks! I could really use some advice!
Info:
Minnesota (47 deg lat)
Roof Mounted 30 deg angle
No trees or shading
Professionally installed
Heliscope calc was 35MWh/yr
PVWatts hourly can't hit that 35MWh number with grid-sell limitation clipping on every sunny day year-round
Specs:
26.1KW
48 395w (19KW) DC connected
18 395w (7KW) DC with micro-inverters AC Coupled to Gen port on Sol-Ark
Sol-Ark 15-LV
Edit: 10KWh Battery (5KWh x2)
Been lurking quite a bit and wondering if I could get some thoughts.
We have a 26KW Roof-Mounted Solar installed (late 2023), 66 395w panels, 48 are DC (19KW) and 18 (7KW) have AC micro-inverters on them running into the Gen port on the Sol-Ark. We also have just one Sol-Ark 15K-LV inverter. Naively, I'm seeing the Sol-Ark is "grid sell" limited to 16KW and we keep getting clipped at 15.5KW nominal power selling back to the grid at peak times during the day.
Is this normal? Should we have had two Sol-Ark's installed for this size of system? Anyway to increase the grid sell over 16KW? Feels like the array was too large for the inverter.
And I'm not seeing us hit any more than 19KW nominal power on the peak of day, with full sun. Granted it is Jan-Feb, but is that to be expected this time of the year with 30 degree angled panels at 47 deg lat, no shading? PV Watts has it listed as being able to hit 23KW with my assumptions. I know getting 395w per panel is not realistic, and 295w is their real world optimal number (PMax?) and I think I'm getting topped at close to that (275w peak power output). Sound about right for panel output before we consider Sol-Ark limits?
Thanks! I could really use some advice!
Info:
Minnesota (47 deg lat)
Roof Mounted 30 deg angle
No trees or shading
Professionally installed
Heliscope calc was 35MWh/yr
PVWatts hourly can't hit that 35MWh number with grid-sell limitation clipping on every sunny day year-round
Specs:
26.1KW
48 395w (19KW) DC connected
18 395w (7KW) DC with micro-inverters AC Coupled to Gen port on Sol-Ark
Sol-Ark 15-LV
Edit: 10KWh Battery (5KWh x2)
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