EPC Power 50-100100

Name: EPC Power 50-100100
Brand: EPC Power

Battery inverter, ac-coupled battery inverter. 3 models, 450 kW–1,500 kW AC at 208 V / 480 V / 690 V.

UL 1741 SBCEC listed · Aug 2, 2021

Model

Rated AC power1,000 kW
CEC weighted efficiency97.5%

Models & power ratings

CEC Grid Support Inverter List (Oct 7, 2026) · NLR SAM inverter library · 3 models

Model	Nominal AC	Grid voltage	CEC continuous	Rated AC (SAM)	CEC weighted eff.	DC test window	CEC listed	UL 1741 SB
50-100100	450 kW	208 V	452.6 kW	452.6 kW	95.5%	400–1,000 V	Aug 2, 2021	SB
50-100100	1,000 kW	480 V	1,036.8 kW	1,036.8 kW	97.5%	750–1,250 V	Aug 2, 2021	SB
50-100100	1,500 kW	690 V	1,499.9 kW	1,499.9 kW	98.0%	1,050–1,250 V	Aug 2, 2021	SB

Efficiency

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

CEC weighted efficiency97.5%
Night-time standby (tare)0 W
Power to start converting9,774 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 Jun 27, 2024
UL 1741 SA (SA8–SA13)Yes — TUV Rheinland of North America
Firmware tested (SA)a501a47, fe924e5
Volt-VAr with reactive power priority (SA13)Yes
Freq-Watt / Volt-Watt (SA14–15)Yes
Disable permit service / limit active power (SA17–18)Yes
CSIP (IEEE 2030.5) conformanceVia gateway during testing (Y*)
Monitor key data & scheduling (Rule 21 Phase 3)No
CEC listedAug 2, 2021
Last CEC updateAug 1, 2024

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

50-200100

Questions & answers

How efficient is the EPC Power 50-100100?

The California Energy Commission lists a weighted efficiency of 95.5–98.0% for EPC Power 50-100100 models, measured at six power levels and three DC voltages.

What sizes does the EPC Power 50-100100 come in?

The CEC list includes 3 models from 450 kW to 1,500 kW AC: 50-100100, 50-100100, 50-100100.

Is the EPC Power 50-100100 certified to UL 1741 SB?

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

Can the EPC Power 50-100100 be used with a battery?

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

What is the 50-100100’s DC input voltage range?

CEC tested it at 750–1,250 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).