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576–1,728 kWh

Commercial energy storage systemGenerac

Generac SBE-xxx-250

576–1,728 kWh · 250 kW · Lithium Iron Phosphate · 7 configurations

UL 9540UL 1741 SBCEC listed · Aug 1, 2025

Nameplate energy576–1,728 kWh
Continuous power250 kW
Round trip (AC)87%
ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

SBE-xxx-250: 576–1,728 kWh nameplate energy; 250 kW continuous; lithium iron phosphate.

Models & configurations

CEC Energy Storage System List · 7 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
SBE-576-250	576 kWh	250 kW	480 V	87%	Aug 1, 2025
SBE-599-250	599 kWh	250 kW	480 V	87%	Aug 1, 2025
SBE-864-250	864 kWh	250 kW	480 V	87%	Aug 1, 2025
SBE-1152-250	1,152 kWh	250 kW	480 V	87%	Aug 1, 2025
SBE-1198-250	1,198 kWh	250 kW	480 V	87%	Aug 1, 2025
SBE-1440-250	1,440 kWh	250 kW	480 V	87%	Aug 1, 2025
SBE-1728-250	1,728 kWh	250 kW	480 V	87%	Aug 1, 2025

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)576–1,728 kWh
Rated power (CEC)250 kW
Max continuous discharge (CEC)250 kW
Full-power discharge timeabout 7.1 h at full power
Round-trip efficiency (AC-AC)87%
ChemistryLithium Iron Phosphate
Grid connection480 V

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by CSA Group
Certificate date & editionJun 20, 2025 · Ed. 3 : 2025

UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

California grid & code compliance

CEC Energy Storage System List

UL 1741 SB (IEEE 1547-2018)Yes
UL 1741 SA (Rule 21)Yes
CSIP (IEEE 2030.5)Yes (with conditions)
JA12 declaration (Title 24)Yes
JA12 control strategiesBasic, TOU
Last CEC updateAug 11, 2025
Monitor Key Data schedulingNo

Questions & answers

How much energy does the Generac SBE-xxx-250 store?

576–1,728 kWh nameplate, per the California Energy Commission list.

Is the SBE-xxx-250 UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by csa group).

Sources

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.