Corvus Energy – first marine ESS Supplier to enable data-driven State of Health (SOH) test

Bergen, Norway March 6th, 2024 – Corvus Energy, the world’s leading provider of zero-emission solutions for the maritime industry is pleased to announce that the Company has developed a DNV-accepted method for data-driven SOH testing. Corvus Energy is the first marine ESS supplier to provide this to their customers.

State of Health (SOH) tests for marine battery systems are mandatory and give an overall assessment of the condition, performance, and safety of the batteries over time. These tests help determine the battery’s capacity, efficiency, and remaining life. Using data-driven approaches in these tests enhances accuracy and efficiency in monitoring and maintaining marine battery systems. In addition, the test can be done with close to no disruption to the normal operation which significantly reduces costs and off-hire time for the vessel.

Reduced cost, improved safety and more predictable operation

Lars Ole Valøen, EVP and CTO for Corvus explains: “We recognized very early that we could reduce cost and unwanted non-operation for ship owners significantly if we could do the annual SOH test without taking the vessel out of operation. However, due to the high complexity of battery degradation processes, it has taken almost 5 years to gather sufficient degradation data from the field and develop robust data-driven SOH algorithms. The work has been carried out by our experienced team of battery experts in collaboration with world-class research institutions and class society DNV. Large amounts of data from our installations, lab test data, and a powerful digital twin approach have been used to allow simplified test procedure requirements without compromising the accuracy of the test. This method will also make more frequent SOH testing a real choice going forward, enabling improved safety and more predictable operation, especially toward the end of the life of a battery installation”.

A more efficient solution to fulfill this class-required task

Fjord 1, the leading Norwegian ferry operator with 25 ferries sailing with Corvus battery systems, says: “Recognizing the costly and disruptive nature of traditional State of Health (SOH) testing, which meant taking the vessel out of operation for a full day, we sought a more efficient solution to fulfill this class-required task without compromising operational continuity. The process was akin to extracting an oil sample from a diesel engine, necessitating its shutdown until the analysis of the sample was completed and the report was received. Fjord 1 is pleased to recognize the introduction of a new, more efficient methodology for State of Health (SOH) testing by Corvus. This innovative approach, grounded in digital twin technology, represents a step forward for operational efficiency. We are grateful for the opportunity to give our input and are satisfied with the outcome. Fjord 1 looks forward to witnessing the positive impacts this new methodology will bring to our fleet” says Sondre Austreim, Discipline lead electro at Fjord 1

Going forward, Corvus aims to further develop its data-driven approach to provide its customers with updated SOH verifications at any time requested purely based on real data from their normal operation.

Photo caption: Corvus Energy is the first marine ESS supplier to provide data-driven State of Health (SOH) testing to their customers which will save time and costs for the shipowners.

About Corvus Energy

Corvus Energy is the leading supplier of energy storage systems (ESS) for maritime, offshore and port applications. Corvus Energy offers a full portfolio of energy storage and fuel cell systems, suitable for almost every vessel type, providing power systems in the form of modular lithium-ion battery systems and Hydrogen PEM fuel cell systems. Corvus Energy has unsurpassed experience from more than 1000 projects. More than 50% of the world`s vessels with zero-emission technology are equipped with Corvus Energy systems.

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