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502–1,218 kWh

Commercial energy storage systemSYL (NINGBO) Battery

SYL (NINGBO) Battery SUxxxU250HV

502–1,218 kWh · 250 kW · Lithium Iron Phosphate · 12 configurations

UL 9540UL 1741 SBCEC listed · Aug 11, 2023

Nameplate energy502–1,218 kWh
Continuous power250 kW
ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

SUxxxU250HV: 502–1,218 kWh nameplate energy; 250 kW continuous; lithium iron phosphate.

Models & configurations

CEC Energy Storage System List · 12 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
SU502U250HV	502 kWh	250 kW	480 V	—	Aug 11, 2023
SU538U250HV	538 kWh	250 kW	480 V	—	Aug 11, 2023
SU573U250HV	573 kWh	250 kW	480 V	—	Aug 11, 2023
SU609U250HV	609 kWh	250 kW	480 V	—	Aug 11, 2023
SU753U250HV	753 kWh	250 kW	480 V	—	Aug 11, 2023
SU806U250HV	806 kWh	250 kW	480 V	—	Aug 11, 2023
SU860U250HV	860 kWh	250 kW	480 V	—	Aug 11, 2023
SU914U250HV	914 kWh	250 kW	480 V	—	Aug 11, 2023
SU1004U250HV	1,004 kWh	250 kW	480 V	—	Aug 11, 2023
SU1075U250HV	1,075 kWh	250 kW	480 V	—	Aug 11, 2023
SU1147U250HV	1,147 kWh	250 kW	480 V	—	Aug 11, 2023
SU1218U250HV	1,218 kWh	250 kW	480 V	—	Aug 11, 2023

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)502–1,218 kWh
Rated power (CEC)250 kW
Max continuous discharge (CEC)250 kW
Full-power discharge timeabout 4.8 h at full power
ChemistryLithium Iron Phosphate
Grid connection480 V

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by SGS
Certificate date & editionMay 26, 2023 · Ed. 2 : 2020

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)No
CSIP (IEEE 2030.5)Yes (with conditions)
JA12 declaration (Title 24)No
Monitor Key Data schedulingYes

Questions & answers

How much energy does the SYL (NINGBO) Battery SUxxxU250HV store?

502–1,218 kWh nameplate, per the California Energy Commission list.

Is the SUxxxU250HV UL 9540 certified?

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

Sources

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