I just moved into a house and contracted with a Solar Company in CA just before the Net Energy Metering deadline passed. The house is a large one and I am contracted to receive 30 400-watt panels (Panasonic) with Enphase IQ8 inverters. I am also adding a Powerwall 2. My solar installer and my electrician required me to upgrade my load center panel and the electrician recommended a Siemens MC2442S1200SC panel, which has a 100 amp breaker for solar backfeed and ample space for the breakers I need. I had the electrician install a NEMA 6-50 40-amp outlet for my wife's Volvo hybrid and he installed a hardwired Tesla wall charger (50 amp) for my 2017 MS 75D. I also have a inlet for a portable gas/propane 13 kWh generator because I live in a fire zone in CA with lots of brown outs.
Unfortunately the solar company said the install would work, then backtracked a month later (after the install) and said I can't install a powerwall on my solar ready load center because the load center will not allow the battery to be charged by the solar panels. The electricians first refuted this, but we called Siemens and they confirmed it. The electricians never did their homework on how my proposed system would work together. Now I am stuck with a solar ready panel I can't use, a 200 amp busbar that now must be de-rated to 150 amps and a completely stalled solar install project until this all gets figured out.
My options at this point (as explained to me are)
1. Derate the panel to 150 amps and move forward (have 2 EV chargers and 2 AC units, pool pump, and a 4600 sq ft house to power).
2. Force the electricians to swap out the panel for a panel with 225 amps on the busbar (they are refusing to just do this without a fight)
3. Go without the powerwall 2 which I absolutely don't want to do.
Any suggestions from any of you with more experience than me? Will a Powerwall Plus change or remedy this situation? I am desperate to resolve this and move forward.
Thanks in advance for any advice!
Unfortunately the solar company said the install would work, then backtracked a month later (after the install) and said I can't install a powerwall on my solar ready load center because the load center will not allow the battery to be charged by the solar panels. The electricians first refuted this, but we called Siemens and they confirmed it. The electricians never did their homework on how my proposed system would work together. Now I am stuck with a solar ready panel I can't use, a 200 amp busbar that now must be de-rated to 150 amps and a completely stalled solar install project until this all gets figured out.
My options at this point (as explained to me are)
1. Derate the panel to 150 amps and move forward (have 2 EV chargers and 2 AC units, pool pump, and a 4600 sq ft house to power).
2. Force the electricians to swap out the panel for a panel with 225 amps on the busbar (they are refusing to just do this without a fight)
3. Go without the powerwall 2 which I absolutely don't want to do.
Any suggestions from any of you with more experience than me? Will a Powerwall Plus change or remedy this situation? I am desperate to resolve this and move forward.
Thanks in advance for any advice!