Energidea
Hoymiles Hoymiles HoyUltra 2 HESS-261-2h

Hoymiles

Hoymiles HoyUltra 2 HESS-261-2h

C&I AIO

Commercial and industrial all-in-one storage cabinet/system.

AC Rated Power

125 kW

Energy (Nominal)

261 kWh

Thermal Management

Liquid

IP Rating

IP55

EMS Included

true

Warranty Years

-

  • Next-generation liquid cooling allows full power operation up to 50°C and 3000m altitude.
  • Ultra-quiet operation at ≤60 dB(A) for noise-sensitive urban environments.
  • Modular maintenance and quick-disconnect terminals cut O&M time by up to 60%.
C&IInstaller comparisonEU market

Applicable Countries

DE - GermanyPL - PolandES - SpainFR - FranceBE - BelgiumNL - NetherlandsIT - Italy

Country notes: Next-gen system targeting European C&I standards.

Installer AI Prompt

Generate installer-ready prompt templates for ChatGPT or Gemini.

Core Electrical

Data source

AC Rated Power

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

AC Voltage

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Energy (Nominal)

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Energy (Usable)

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Peak Power

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Battery Chemistry

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

DC Voltage Range

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

System Round-trip Efficiency

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Noise

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

AC Rated Power125 kW
AC Voltage400
Energy (Nominal)261 kWh
Energy (Usable)261 kWh
C-rate (continuous)-
Peak Power137.5 kW
Battery ChemistryLFP
DC Voltage Range728 - 936 V
System Round-trip Efficiency90.3 %
Noise70 dB(A)

EMS & Communication

Data source

EMS Included

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Protocols

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

EMS Functions

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Remote Maintenance

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Fault Diagnosis

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Grid Support Functions Detail

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Response Time

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

EMS Includedtrue
ProtocolsModbus RTU, Modbus TCP, DL/T645
EMS FunctionsRefined cloud-to-edge operation, Tariff management, Automated dispatch
Remote Maintenancetrue
Fault Diagnosistrue
Grid Support Functions DetailPQ, VF, Black Start support
Data Logging Interval-
Response Time100 ms

Environment & Mechanical

Data source

Thermal Management

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Fire Suppression

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Detectors

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Maintenance Access

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Thermal Runaway Mitigation

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Lifting Points

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

IP Rating

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Corrosion Rating

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Operating Temp Range

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Dimensions (W x H x D)

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Weight

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Thermal ManagementLiquid
Fire SuppressionNOVEC1230 + PACK-level + Water
DetectorsEarly warning cloud alerts, Smoke/Gas detection
Maintenance AccessModular O&M (<2h module swap)
Pressure Relief-
Thermal Runaway MitigationAdvanced liquid cooling (PCS + Battery), no derating at 50C
Lifting PointsIntegrated
Service Interval-
IP RatingIP55
Corrosion RatingC5
Operating Temp Range-30 to 55
Dimensions (W x H x D)1030 x 1400 x 2450 mm
Weight2700 kg

Compliance & Warranty

Data source

Certifications

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

Battery Certifications

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

System Certifications

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

LVRT/HVRT

Source URL: https://shop.solar-kit.eu/storage/products_files/ESS-HOY-ULTRA2-125KW-261KWH.pdf

Source Version: Global EN V202504

Source Page: 1

CertificationsIP55, C5, ISO 3744 Noise Certification
Battery CertificationsLFP 314Ah Cells
System CertificationsCE
LVRT/HVRTtrue
Warranty Throughput / Cycles-

Typical System Setup

Grid-Tied Parallel Scaling

Large industrial parks requiring megawatt-scale storage.

Grid Type: 3-Phase On-Grid

Suitable For: Large scale industrial projects up to 2 MW / 4.1 MWh.

Main Components

Up to 16x HoyUltra 2 units in parallel.

Notes

Zero-oscillation parallel operation.

Disclaimer: For reference only. Final system configuration should be confirmed based on local regulations, grid requirements, and project conditions.

Off-Grid Microgrid

Remote sites or critical facilities requiring VF and Black Start.

Grid Type: 3-Phase Off-Grid

Suitable For: Data centers, remote hospitals, island grids.

Main Components

Up to 8x HoyUltra 2 units in parallel.

Notes

Seamless transfer feature ensures uninterrupted power.

Disclaimer: For reference only. Final system configuration should be confirmed based on local regulations, grid requirements, and project conditions.

VPP / Energy Trading

Aggregated storage participating in frequency response or arbitrage.

Grid Type: 3-Phase Hybrid

Suitable For: Aggregators and utility-scale service providers.

Main Components

HoyUltra 2, Third-party Cloud/VPP interface.

Notes

EMS supports seamless third-party cloud integration.

Disclaimer: For reference only. Final system configuration should be confirmed based on local regulations, grid requirements, and project conditions.

Files

Type: DATASHEET_PDF

Hoymiles HoyUltra 2 HESS-261-2h Datasheet

Open file

Type: PROMOTION_IMAGE

Hoymiles HoyUltra 2 HESS-261-2h Promotion Image

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