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502–1,004 kWh

Commercial energy storage systemSYL (NINGBO) Battery

SYL (NINGBO) Battery SUxxxU250LM

502–1,004 kWh · 250 kW · Lithium Iron Phosphate · 3 configurations

UL 9540CEC listed · Dec 12, 2022

Nameplate energy502–1,004 kWh
Continuous power250 kW
ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

SUxxxU250LM: 502–1,004 kWh nameplate energy; 250 kW continuous; lithium iron phosphate.

Models & configurations

CEC Energy Storage System List · 3 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
SU502U250LM	502 kWh	250 kW	480 V	—	Dec 12, 2022
SU753U250LM	753 kWh	250 kW	480 V	—	Dec 12, 2022
SU1004U250LM	1,004 kWh	250 kW	480 V	—	Dec 12, 2022

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)502–1,004 kWh
Rated power (CEC)250 kW
Max continuous discharge (CEC)250 kW
Full-power discharge timeabout 4 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 & editionSep 21, 2022 · 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)No
UL 1741 SA (Rule 21)Yes
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 SUxxxU250LM store?

502–1,004 kWh nameplate, per the California Energy Commission list.

Is the SUxxxU250LM 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.