Eos Energy Storage Z3C-C

Name: Eos Energy Storage Z3C-C
Brand: Eos Energy Storage

690–750 kWh · 125–150 kW · Zinc-Halide · 2 configurations

UL 9540CEC listed · Oct 1, 2026

Overview

CEC Energy Storage System List

Z3C-C: 690–750 kWh nameplate energy; 125–150 kW continuous; zinc-halide.

CEC Energy Storage System List · 2 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
Z3C-C	690 kWh	150 kW	—	—	Oct 1, 2026
Z3C-C [2]	750 kWh	125 kW	—	—	Oct 1, 2026

CEC Energy Storage System List

CEC Energy Storage System List

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

CEC Energy Storage System List

How much energy does the Eos Energy Storage Z3C-C store?

690–750 kWh nameplate, per the California Energy Commission list.

Is the Z3C-C UL 9540 certified?

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

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