Corvus Energy and BYD introduce Blue Whale marine LFP battery system

Corvus Energy AS presented the Blue Whale NxtGen Power marine battery system on September 2, 2026, marking the commercial debut of its lithium iron phosphate partnership with BYD Energy Storage.

The two manufacturers introduced the containerized system at the SMM maritime trade fair in Hamburg, Germany. The presentation followed an initial commercial product disclosure released from Bergen, Norway, on August 27, 2026.

Under the joint development agreement, BYD Energy Storage supplies the lithium iron phosphate cells and manufactures the core cell stacks, building the subassemblies at its specialized industrial facilities in Shenzhen. Corvus Energy oversees total system architecture, battery management hardware, cyber defense protocols and fire containment systems, conducting final assembly, factory acceptance tests and global field service from its European operations.

The new battery package relies on high discharge rates to supply sudden bursts of electrical current, a design that serves vessels where operational cycles depend on high power output rather than extended onboard energy storage between charging cycles, Corvus Energy said. Target applications include harbor tugs, commercial workboats, offshore support vessels and double-ended passenger ferries, which frequently encounter sharp power spikes while guiding container carriers or holding fixed coordinates in rough sea conditions.

The product launch marks the culmination of a joint engineering program initiated nine months earlier. Corvus Energy and BYD signed a preliminary memorandum of understanding on December 9, 2025, establishing an exploratory marine battery framework, before formalizing their commercial ties on May 13, 2026, with a binding strategic cooperation agreement signed during the China International Battery Fair in Shenzhen. The agreement created an industrial mechanism to integrate Chinese mass-market cell chemistry with European maritime type-approval standards, addressing regulatory and certification hurdles Chinese battery companies have faced when selling directly to Western shipbuilders.

Corvus Energy holds the largest operational footprint in the global maritime battery industry, having delivered energy storage packages to more than 1,400 marine projects since introducing its first commercial battery pack in 2010, with its equipment powering more than 50% of hybrid and battery-electric commercial vessels worldwide. The company previously relied on nickel manganese cobalt chemistries for most of its offshore and passenger vessel deliveries.

Lithium iron phosphate chemistries do not use nickel or cobalt in the positive electrode, reducing thermal runaway risks and lowering raw cathode material costs compared to traditional ternary lithium chemistries. Earlier naval installations avoided lithium iron phosphate because of lower volumetric energy density, but recent advances in cell design and structural packaging now allow shipyards to install larger iron-phosphate blocks without compromising ship stability or cargo displacement.

The Blue Whale NxtGen Power integrates Corvus Energy’s proprietary battery management system and digital telemetry, monitoring cell voltages, operating temperatures and internal resistance in real time to prevent thermal propagation across modules. Each battery pack includes an automated digital battery passport compliant with European Union supply chain tracing regulations, documenting raw material sourcing, factory carbon footprints and cumulative degradation cycles throughout the vessel’s operational life.

Stricter global emissions rules, including the IMO’s target of net-zero greenhouse gas emissions from international commercial fleets by or around 2050, are driving operators toward hybrid and all-electric propulsion. The EU emissions trading system’s carbon surcharges on large commercial vessels since 2024, along with zero-emission berthing mandates at major ports across northern Europe and North America, are further accelerating the transition.

Corvus Energy will conduct validation tests and type-approval procedures for the Blue Whale NxtGen Power system with maritime classification societies ahead of commercial deliveries planned for 2027.