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1,518 kWh

Commercial energy storage systemCaterpillar

Caterpillar ETSxxxx

1,518 kWh · 570 kW · Lithium Ion

UL 9540UL 1741 SBCEC listed · Oct 11, 2023

Nameplate energy1,518 kWh
Continuous power570 kW
ChemistryLithium Ion

Overview

CEC Energy Storage System List

ETSxxxx: 1,518 kWh nameplate energy; 570 kW continuous; lithium ion.

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)1,518 kWh
Rated power (CEC)570 kW
Max continuous discharge (CEC)570 kW
Full-power discharge timeabout 2.6 h at full power
ChemistryLithium Ion
Grid connection480 V

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by UL
Certificate date & editionApr 19, 2022 · Ed. 1 : 2016

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)No
JA12 declaration (Title 24)No
Monitor Key Data schedulingNo

Questions & answers

How much energy does the Caterpillar ETSxxxx store?

1,518 kWh nameplate, per the California Energy Commission list.

Is the ETSxxxx UL 9540 certified?

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

Sources

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