Svitzer Balder completes sea trials of electric escort tug with 6 MWh LFP battery system

The Svitzer Balder, a harbour tug constructed by Türkiye’s Uzmar shipyard, has successfully completed sea trials equipped with AYK Energy’s 6 MWh lithium-iron-phosphate (LFP) battery system. This vessel is touted as the world’s most powerful electric escort tug and the first harbour tug to combine battery power with methanol fuel. Designed for both harbour duties and near-open ocean operations, the tug is set to operate primarily on electric power, with dual-fuel methanol engines providing backup and extending its operational range. AYK Energy’s AriesA battery system, certified by ABS, boasts a rated lifespan of approximately ten years and delivers substantial energy capacity while prioritising safety and cost-efficiency. The choice of LFP chemistry over the more common nickel-manganese-cobalt (NMC) batteries reflects AYK’s commitment to safer, more affordable solutions without compromising on energy density or performance. The company highlights that LFP batteries offer superior fire safety and lower production costs, making them well-suited to meet the demanding requirements of marine applications. Chris Kruger, founder of AYK Energy, emphasised the significance of this project in demonstrating the viability of LFP technology for high-power marine vessels. He pointed out that the battery system not only meets the horsepower demands of the industry but does so at a fraction of the cost and with enhanced safety compared to traditional chemistries. This milestone reinforces AYK’s position as a pioneer in marine battery technology, having previously supplied batteries to four other vessels operated by Svitzer. The battery packs were manufactured at AYK’s recently opened 5,000 square metre automated facility in Zhuhai, China, which currently has an annual production capacity of 300 MWh, with plans to expand to 1 GWh. The deployment of the Svitzer Balder in the Port of Gothenburg marks a significant step forward in the adoption of zero-emission technology in the maritime sector, with the tug expected to perform over 90% of its operations without producing emissions. This development signals a growing shift towards sustainable powertrains in harbour and escort tug operations worldwide.