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Compare power, energy and supply phase.

These six product families cover different configurations. Start with the exact model and operating role, then use the catalogue below to compare the full specifications.

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Published manufacturer references · checked 13 October 2026
Model or familyPublished powerBattery energyAC phase / voltageReference
ESP-501010 kW AC output51.2 kWhSingle phaseSource ↗
ESP-402020 kW AC output40.8 kWhSingle phaseSource ↗
ESG · 61.44 kWh family30 / 40 / 50 kW on-grid61.44 kWhThree phase · 230/400 VSource ↗
ESG · 112.53 kWh family30 / 40 / 50 / 60 kW on-grid112.53 kWhThree phase · 230/400 VSource ↗
ESG · 115.2 kWh family36 / 40 / 50 / 60 kW AC rated115.2 kWhThree phase · 230/400 VSource ↗
ESG-E261125 kW AC rated261 kWhThree phase · 400 VSource ↗
ESG-M261125 kW AC rated261 kWhThree phase · 400 VSource ↗

A higher kW rating does not always mean more stored energy. The manufacturer lists ESP-5010 at 10 kW / 51.2 kWh and ESP-4020 at 20 kW / 40.8 kWh. Confirm the supplied configuration; nominal energy does not establish usable energy or runtime.

Matching headline ratings does not make two systems interchangeable. ESG-E261 and ESG-M261 both list 125 kW / 261 kWh. Review their documented components, options, environmental limits and site requirements separately.

6 product families to explore

Find your model, compare the published specifications, and discuss the right configuration for your project.

For ratings, 48 V and 48V mean the same search. Results do not confirm compatibility.

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Before you shortlist

Choosing commercial battery energy storage

Three checks to turn a product comparison into a useful project enquiry.

  1. Define the operating objective

    Describe the load profile and intended role of storage: backup, energy shifting or another project requirement. Check which functions the proposed system supports.

  2. Size power and energy separately

    Specify peak power in kW and required stored energy in kWh. Review usable capacity and operating limits against the actual load schedule.

  3. Review site integration

    Bring supply details, available space and control requirements. A qualified designer should verify the electrical connection, protection and installation requirements.