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EVSE Solar Control
Calculate the EVSE current limit (in amps) based on available excess solar power.
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Result
Charging
Set Current
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Min Current (A)
Minimum charge current in amps. Default: 6. Values below 6 will be clamped to 6.
Max Current (A)
Maximum charge current in amps. Default: 48. Values above 48 will be clamped to 48.
Min Current Change (A)
Current must change by at least this amount, or not at all. Valid: 1–48. Default: 1.
Max Current Change (A)
Current must not change by more than this amount in one step. Valid: 1–48. Default: 48.
Powerwall Full Threshold
Fraction of 1.0. Powerwalls are considered full if SoC ≥ this value. Default: 0.95.
Powerwall Max Charge Power (kW)
Powerwalls are considered charging at full speed if charging ≥ this rate. Valid: 1.0–9.9. Default: 9.5.
Powerwall Steady Threshold (kW)
If Powerwall power is within ±this value of 0 kW, it is treated as steady (neither charging nor discharging). Default: 1.0.
PW Priority Cutoff SoC
When PW SoC is above this value and PW is moderately charging, EVSE takes priority (PW charges from leftover solar). Lower = EVSE priority sooner (clear days). Higher = PW priority longer (cloudy days). Valid: 0.0–1.0. Default: 0.5.
Trickle Charge Current (A)
If 0, no trickle charging before powerwalls are full. Otherwise, may return this current for trickle charging. Valid: 0 or 6–48. Default: 0.
Max Extra Charge Budget (A)
If the EVSE is pulling less than its allowed current, the new limit will not exceed (actual draw + this budget). Valid: 1–48. Default: 4.
Sensor Averaging Window (minutes)
Minutes of history to time-weight-average each sensor reading over. Default: 1.0.
Reserve for Large Loads
When enabled, back off EVSE current to leave headroom for large appliance loads (oven, dryer). Default: enabled.
Home Power Budget (kW)
EVSE is capped to leave room for active large loads (oven/dryer peak > 600 W → that peak reserved). Default: 18.0.
Interpolate Priority SoC Through Day
When enabled, the PW priority SoC cutoff is linearly interpolated across the day: sunrise uses the empty threshold, solar noon uses the configured cutoff exactly, and sunset uses the full threshold. Default: disabled.
Powerwall Empty Threshold
Fraction of 1.0. Used as the priority SoC cutoff at sunrise when interpolation is enabled. Default: 0.10.
