SOCOMEC SUNSYS-HES-L

186.3–1,117.8 kWh · 50–550 kW · Lithium Iron Phosphate · 32 configurations

UL 9540UL 1741 SBCEC listed · Mar 11, 2022

Nameplate energy186.3–1,117.8 kWh
Continuous power50–550 kW
Round trip (AC)88%
ChemistryLithium Iron Phosphate

Overview

CEC Energy Storage System List

SUNSYS-HES-L: 186.3–1,117.8 kWh nameplate energy; 50–550 kW continuous; lithium iron phosphate.

Models & configurations

CEC Energy Storage System List · 32 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
SUNSYS-HES-L {50kW, 186.3kWh}	186.3 kWh	50 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {100kW, 186.3kWh}	186.3 kWh	100 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {50kW, 372.6kWh}	372.6 kWh	50 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {100kW, 372.6kWh}	372.6 kWh	100 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {150kW, 372.6kWh}	372.6 kWh	150 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {200kW, 372.6kWh}	372.6 kWh	200 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {100kW, 558.9kWh}	558.9 kWh	100 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {150kW, 558.9kWh}	558.9 kWh	150 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {200kW, 558.9kWh}	558.9 kWh	200 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {250kW, 558.9kWh}	558.9 kWh	250 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {300kW, 558.9kWh}	558.9 kWh	300 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {150kW, 745.2kWh}	745.2 kWh	150 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {200kW, 745.2kWh}	745.2 kWh	200 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {250kW, 745.2kWh}	745.2 kWh	250 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {300kW, 745.2kWh}	745.2 kWh	300 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {350kW, 745.2kWh}	745.2 kWh	350 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {400kW, 745.2kWh}	745.2 kWh	400 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {150kW, 931.5kWh}	931.5 kWh	150 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {200kW, 931.5kWh}	931.5 kWh	200 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {250kW, 931.5kWh}	931.5 kWh	250 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {300kW, 931.5kWh}	931.5 kWh	300 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {350kW, 931.5kWh}	931.5 kWh	350 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {400kW, 931.5kWh}	931.5 kWh	400 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {450kW, 931.5kWh}	931.5 kWh	450 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {200kW, 1117.8kWh}	1,117.8 kWh	200 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {250kW, 1117.8kWh}	1,117.8 kWh	250 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {300kW, 1117.8kWh}	1,117.8 kWh	300 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {350kW, 1117.8kWh}	1,117.8 kWh	350 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {400kW, 1117.8kWh}	1,117.8 kWh	400 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {450kW, 1117.8kWh}	1,117.8 kWh	450 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {500kW, 1117.8kWh}	1,117.8 kWh	500 kW	480 V	88%	Mar 11, 2022
SUNSYS-HES-L {550kW, 1117.8kWh}	1,117.8 kWh	550 kW	480 V	88%	Mar 11, 2022

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)186.3–1,117.8 kWh
Rated power (CEC)50–550 kW
Max continuous discharge (CEC)50–550 kW
Full-power discharge timeabout 2 h at full power
Round-trip efficiency (AC-AC)88%
ChemistryLithium Iron Phosphate
Grid connection480 V

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by MET
Certificate date & editionJul 1, 2021 · 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)Yes
CSIP (IEEE 2030.5)Yes (with conditions)
JA12 declaration (Title 24)Yes
JA12 control strategiesBasic, TOU, Advance DR
CEC noteSUNSYS-HES-L is composed of one converter cabinet SUN-HES-L-480, equipped with eight 50kW power module SUN-HES-MOD50, and five 186kWh battery rack O452280-E
Last CEC updateSep 11, 2023
Monitor Key Data schedulingYes

Questions & answers

How much energy does the SOCOMEC SUNSYS-HES-L store?

186.3–1,117.8 kWh nameplate, per the California Energy Commission list.

Is the SUNSYS-HES-L UL 9540 certified?

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

Sources

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