Gridwiz Gridwiz-PCS 300

Battery inverter, ac-coupled battery inverter. 1 model, 300.4 kW AC at 380 V.

UL 1741 SBCEC listed · Dec 1, 2025

Rated AC power300.4 kW
CEC weighted efficiency97.5%

AC output (grid side)

CEC Grid Support Inverter List (Oct 7, 2026)

Rated AC power300.4 kW
CEC-measured continuous output300.4 kW
Grid voltage380 V
Phase3-phase 380 V

Efficiency

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library

CEC weighted efficiency97.5%
Night-time standby (tare)16.7 W
Power to start converting2,410.3 W

CEC weighted efficiency is measured by an accredited lab at six power levels and three DC voltages — the number to compare between inverters.

Grid & smart-inverter certification

CEC Grid Support Inverter List (Oct 7, 2026)

UL 1741 SB (3rd ed.)Yes — TUV SUD, certificate Sep 20, 2024
UL 1741 SA (SA8–SA13)No
Volt-VAr with reactive power priority (SA13)No
Freq-Watt / Volt-Watt (SA14–15)No
Disable permit service / limit active power (SA17–18)No
CSIP (IEEE 2030.5) conformanceNo
CEC listedDec 1, 2025

UL 1741 SB is required for new interconnections in California (Rule 21) since 2026.

Questions & answers

How efficient is the Gridwiz Gridwiz-PCS?

The California Energy Commission lists a weighted efficiency of 97.5% for Gridwiz Gridwiz-PCS models, measured at six power levels and three DC voltages.

Is the Gridwiz Gridwiz-PCS certified to UL 1741 SB?

Yes — the CEC Grid Support Inverter List shows UL 1741 SB for all models.

Can the Gridwiz Gridwiz-PCS be used with a battery?

The CEC lists it as a ac-coupled battery inverter.

What is the Gridwiz-PCS 300’s DC input voltage range?

CEC tested it at 640–1,100 V DC.

Sources

California Energy Commission — Grid Support Inverter List (solar and battery inverters), data as of Oct 7, 2026. Manufacturer-reported, confirmed by CEC against certificates and test reports.
NLR (formerly NREL) — System Advisor Model CEC inverter library (version 2026.7.3).