Cali-Graf in Southern California

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247–277 kWh

Commercial energy storage systemCanadian Solar

Canadian Solar CSI-KuBank-S-xxx-2h-NA

247–277 kWh · 125 kW · Lithium Ion · 2 configurations

UL 9540UL 1741 SBCEC listed · May 12, 2025

Nameplate energy247–277 kWh
Continuous power125 kW
ChemistryLithium Ion

Overview

CEC Energy Storage System List

CSI-KuBank-S-xxx-2h-NA: 247–277 kWh nameplate energy; 125 kW continuous; lithium ion.

Models & configurations

CEC Energy Storage System List · 2 listings

Model	Energy	Power	Grid voltage	Round trip	CEC listed
CSI-KuBank-S-247-2h-NA	247 kWh	125 kW	480 V	—	May 12, 2025
CSI-KuBank-S-277-2h-NA	277 kWh	125 kW	480 V	—	Jan 2, 2026

Capacity & power

CEC Energy Storage System List

Nameplate energy (CEC)247–277 kWh
Rated power (CEC)125 kW
Max continuous discharge (CEC)125 kW
Full-power discharge timeabout 2.2 h at full power
ChemistryLithium Ion
Grid connection480 V

Safety listings

CEC Energy Storage System List

UL 9540 (energy storage system)Certified by TUV Rheinland
Certificate date & editionAug 12, 2024 · Ed. 3 : 2023

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 Canadian Solar CSI-KuBank-S-xxx-2h-NA store?

247–277 kWh nameplate, per the California Energy Commission list.

Is the CSI-KuBank-S-xxx-2h-NA UL 9540 certified?

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

Sources

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