I have 62 330w panels & 10 kW & 7.6 SE inverters that give me max 17.6 kWac production. I have full electric 4 BR home in hot climate with AC, two 80 gal HPHW tanks, pool pump & HPHW pool heater. I have 2 EVs with 40 amp/ 9.6 kW & 32 amp/ 7.6 kW on board chargers, respectively. Depending on how much AC I use & miles I drive, my production could almost approximate my consumption. I want to maximize self consumption & minimize grid export $0.10/kWh & import $0.30/kWh. With multiple big loads it is difficult to coordinate.
The Zappi is a supersmart evse marketed in UK that can limit ev charging to surplus solar energy. Theoretically, I would need 2 Zappis. Is there any supersmart evse in US that can limit ev charging to surplus solar?
If not, I could install a zwave 40 amp switch on each of the evse that could be programmed to query my inverter thru its API and only turn on an evse if my surplus solar exceeded a certain threshold such as 5 kW for small evse & 7 kW for larger evse. (Yes, I have an electric meter installed with my inverter.) Has anyone tried that?
(I know that I may also need more solar.)
The Zappi is a supersmart evse marketed in UK that can limit ev charging to surplus solar energy. Theoretically, I would need 2 Zappis. Is there any supersmart evse in US that can limit ev charging to surplus solar?
If not, I could install a zwave 40 amp switch on each of the evse that could be programmed to query my inverter thru its API and only turn on an evse if my surplus solar exceeded a certain threshold such as 5 kW for small evse & 7 kW for larger evse. (Yes, I have an electric meter installed with my inverter.) Has anyone tried that?
(I know that I may also need more solar.)
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