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Vard Electro scores Energy Storage System contract with Siem Offshore

By: Tom Russell 26/10/2021 Vard Electro

General Vessels

Siem Offshore has ordered a SeaQ Energy Storage System (ESS) from Vard Electro. Vard Electro’s ESS includes two battery packs and a DC link which will be installed in the first quarter of 2022 on one of Siem Offshore’s subsea construction vessels lined up for work in the wind sector.

Vard Electro will act as system integrator for the turnkey project that will entail engineering, installation, integration, testing, and commissioning of the system comprising batteries, DC grid, EMS, energy storage inverter, filter and/or transformer, fire detection, and a cooling & ventilation system.

"The system will enable the vessel to operate in fully electric mode with zero emissions while manoeuvring in harbour or other restricted areas and will deliver estimated fuel savings of up to 20%," according to Vard Electro Head of Commercial Sales, Gisle Anderssen.

The SeaQ ESS stores excess energy, either generated by the vessel or derived from shore connections with renewable power sources, to replace engines running on fossil-based fuels that drive propulsion and thruster systems.

"We are pleased to have won this contract with Siem Offshore and look forward to collaborating with them on this project as well as possible future deliveries," said Gisle Anderssen, Head of Commercial Sales at Vard Electro

The batteries for Siem Offshore will be supplied together with a DC grid for power distribution to consumers, with control and monitoring of the battery storage solution handled by the SeaQ Energy Management System (EMS) that interacts with existing control systems onboard.

"The flexibility of the SeaQ ESS system, as well as its advanced functionality were key factors in our selection of Vard Electro for this retrofit," said Jon A. Houge, Operations Manager of Siem Offshore.

Battery storage will be used as a spinning reserve in place of generator sets. This is expected to enable the vessel to run on fewer engines with more optimal load while still maintaining the requirement for redundancy.

Vard Electro stated that an added benefit with batteries is peak shaving that takes the strain off the engines during big load variations by levelling the power and delaying the need for engines to restart. It claims this results in lower fuel consumption and reduced maintenance costs due to less wear-and-tear on engines.

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Vard Electro scores Energy Storage System contract with Siem Offshore

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