EST-Floattech Will Supply Battery for Offshore Vessel
The energy system will power a new offshore support vessel scheduled for delivery in the second quarter of 2028.
Updated on Oct. 1, 2026 in Energy
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EST-Floattech will provide an Octopus High Energy battery system with over 1 MWh of capacity for a new construction service operation vessel (CSOV). The vessel is currently under construction in Batam, Indonesia, and is scheduled for delivery in the second quarter of 2028.
Why it matters
The battery system supports a hybrid power plant by providing a spinning reserve and managing electrical load variations. This setup reduces the number of required generators during dynamic positioning operations, enhancing efficiency for offshore energy tasks.
The Octopus High Energy battery system exceeds 1 MWh of capacity, with the design allowing for future upgrades up to 20 MWh. The vessel will also feature a 100-tonne active heave-compensated crane for offshore operations.
The players
EST-Floattech
This company specializes in the development and supply of high-capacity battery systems for maritime applications.
Marco Polo Marine
This marine logistics group manages shipping operations and is currently overseeing the construction of the new CSOV.
Siemens Energy
This international energy technology firm acts as the system integrator for the hybrid power plant on the vessel.
PKR Offshore
This offshore services company is set to operate the vessel once it completes its construction phase.
Siemens Gamesa
This major renewable energy company plans to deploy the vessel to support offshore wind operations in Taiwan.
The details
The CSOV Plus will utilize a motion-compensated gangway to facilitate walk-to-work transfers, allowing operations in challenging offshore environments. Siemens Energy is serving as the system integrator for the vessel's hybrid power setup, which PKR Offshore will operate for Siemens Gamesa upon deployment in Taiwanese waters.
Timeline
Vessel construction began in Batam in the second quarter of 2026.
The vessel is scheduled for delivery in the second quarter of 2028.
The Big Picture
The adoption of hybrid battery-generator systems reflects the maritime industry's alignment with the International Maritime Organization's 2050 decarbonization strategy. This transition toward electrified marine power units marks a significant move away from traditional reliance on pure diesel-powered generation.
The use of hybrid systems in offshore vessels enables more efficient operation of heavy-duty equipment like cranes and gangways. This technology could lead to reduced fuel consumption and lower operational costs for offshore wind energy projects globally.
The takeaway
Hybrid power systems in the maritime sector offer a viable path to reducing generator load and improving overall vessel efficiency. Operators looking to future-proof their fleets are increasingly prioritizing scalable battery capacity to handle shifting operational demands.
Further reading
For more on the shift toward sustainable maritime power, visit our Energy section.
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Will battery-integrated service vessels successfully support large-scale offshore wind operations by 2028?
