EPC Power 50-200100

Name: EPC Power 50-200100
Brand: EPC Power

Battery inverter, ac-coupled battery inverter. 8 models, 273 kW–663 kW AC at 350 V / 480 V / 600 V / 630 V / 660 V / 690 V / 720 V / 850 V.

UL 1741 SBCEC listed · Oct 1, 2025

Model

Rated AC power515 kW
CEC weighted efficiency98.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 8 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
50-200100	273 kW	350 V	273.2 kW	273.2 kW	98.0%	575–1,200 V	Oct 1, 2025	SB
50-200100	375 kW	480 V	375 kW	375 kW	98.5%	784–1,200 V	Oct 1, 2025	SB
50-200100	468 kW	600 V	468.3 kW	468.3 kW	98.5%	985–1,500 V	Oct 1, 2025	SB
50-200100	491 kW	630 V	491.3 kW	491.3 kW	98.5%	1,034–1,500 V	Oct 1, 2025	SB
50-200100	515 kW	660 V	515.1 kW	515.1 kW	98.5%	1,083–1,500 V	Oct 1, 2025	SB
50-200100	537 kW	690 V	537 kW	537 kW	98.5%	1,127–1,500 V	Oct 1, 2025	SB
50-200100	561 kW	720 V	561.8 kW	561.8 kW	98.5%	1,181–1,500 V	Oct 1, 2025	SB
50-200100	663 kW	850 V	663.6 kW	663.6 kW	99.0%	1,388–1,500 V	Oct 1, 2025	SB

Efficiency

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

CEC weighted efficiency98.5%
Night-time standby (tare)0 W
Power to start converting1,416.4 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 Rheinland of North America, certificate Apr 29, 2025
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 listedOct 1, 2025

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

About EPC Power

CEC Grid Support Inverter List (Oct 7, 2026)

ManufacturerEPC Power
Listed in CEC asEPC Power Corp.
Models on CEC lists23

Other series

50-100100

Questions & answers

How efficient is the EPC Power 50-200100?

The California Energy Commission lists a weighted efficiency of 98.0–99.0% for EPC Power 50-200100 models, measured at six power levels and three DC voltages.

What sizes does the EPC Power 50-200100 come in?

The CEC list includes 8 models from 273 kW to 663 kW AC: 50-200100, 50-200100, 50-200100, 50-200100, 50-200100, 50-200100, 50-200100, 50-200100.

Is the EPC Power 50-200100 certified to UL 1741 SB?

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

Can the EPC Power 50-200100 be used with a battery?

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

What is the 50-200100’s DC input voltage range?

CEC tested it at 1,083–1,500 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).