Wärtsilä and RCT Solutions GmbH have launched Valo, a new global battery energy storage system (BESS) integrator with 7.5 GWh of projects in Australia. The joint venture will provide end-to-end solutions for utility-scale battery energy storage projects. Wärtsilä’s Energy Storage business will contribute utility-scale storage technology, controls and optimisation software, system integration expertise and lifecycle services.
Furthermore, RCT Solutions will bring engineering expertise, global supply chain capabilities and experience in designing and establishing large-scale battery and solar manufacturing operations. The two companies will combine these capabilities through Valo to support the delivery of flexible and resilient energy storage systems and respond to changing grid and market requirements in Australia.
Earlier, in January 2026, RCT GH GmbH received approval to begin manufacturing electrolyser stacks in Thuringia, Germany. The production will initially support MW-scale hydrogen projects for German industrial customers under a hydrogen-as-a-service model. Additionally, systems with individual electrolyser capacities exceeding 30 MW are currently under planning.