C&I BESS · CHISAGE ESS
OBE522-Y — 522 kWh BESS with 125 / 250 kW power options
Higher-capacity C&I storage with liquid cooling, integrated STS and flexible power options.
The OBE522-Y is for sites needing more stored energy in one system. KES reviews load profile, power, autonomy, critical loads, space and connection conditions before selecting a variant.
More stored energy for sites with demanding consumption profiles
We compare power, usable energy, expected cycling, autonomy and site constraints before recommending 522 kWh.
CHISAGE ESS OBE522-Y
Typical OBE522-Y applications
What the OBE522-Y brings
522 kWh in a C&I format
Provides a larger energy reserve without immediately moving to a containerized MWh architecture.
Flexible power
CHISAGE ESS publishes PCS options for 2 h / 4 h configurations and 125 / 250 kW variants.
Integrated STS
The official page describes internal STS for grid/island transfer.
PV integration
The manufacturer provides for an optional MPPT cabinet and existing PV inverter integration.
CHISAGE ESS OBE522-Y
Multi-level protection and liquid cooling
CHISAGE ESS describes PACK-level and cabinet-level protection plus fire protection. The exact configuration is validated for each supplied unit.
Communications and operating strategy
The supplied technical information lists 4G, Ethernet and RS485. KES defines metering, control and EMS integration per project.
Transfer and critical loads
The manufacturer states integrated STS, grid/island transition ≤20 ms and three-phase unbalanced load support. Final backup design depends on critical loads, autonomy and site architecture.
CHISAGE ESS OBE522-Y
Key technical data
Battery and storage
Power and architecture
Format and environment
Control and communications
Technical sources: information supplied to KES and the current official CHISAGE ESS product page, reviewed 07 Sep 2026. The manufacturer's page currently shows an inconsistently labelled data-sheet link, so this page links to the official product page instead.
Manufacturer documentation and project validation
Information published by CHISAGE ESS is combined with technical documentation supplied to KES. The final configuration must be verified for each delivery.
- Official CHISAGE ESS product page
- Applicable model data sheet or technical documentation
- Conformity and connection documentation for the supplied unit
Before quotation or installation in Spain, KES confirms the exact equipment version, applicable certificates, connection requirements, protections and project safety configuration.
How KES Energy integrates it
Before selecting 522 kWh, we verify that capacity and power address a real client requirement.
Do you need 522 kWh or a different modular configuration?
We can compare the OBE522-Y with lower-capacity cabinets or MWh-scale solutions based on consumption, space and operating objective.
Start with a technical review
Request your personalised energy study
Tell us about your site, current solar installation or backup needs. We will review your case and contact you with the next steps.
CHISAGE ESS OBE522-Y · 522 kWh / 125–250 kW