Wärtsilä Signs MoU with TGES for Japan Data Centre Power
Wärtsilä and Tokyo Gas Engineering Solutions agreed to evaluate gas-engine power solutions for Japanese data centres facing grid delays.
Key points
- Wärtsilä and TGES signed an MoU in August 2026 to evaluate gas-engine power for Japanese data centres.
- The collaboration addresses grid connection delays by offering scalable, on-site power solutions for AI infrastructure.
- Wärtsilä’s engines offer lower water and fuel usage than gas turbines, with 81 GW of global capacity installed.
Wärtsilä and Tokyo Gas Engineering Solutions Co., Ltd. (TGES) have signed a Memorandum of Understanding in Helsinki to jointly evaluate power supply solutions for data centres in Japan. The agreement, finalized in August 2026, targets the specific challenge of grid connection constraints and lengthy power procurement timelines that are currently delaying the development of new AI-driven facilities.
The MoU establishes a framework for assessing gas- or dual-fuel engine-based generation for projects currently under development by TGES. By combining TGES’s local project expertise with Wärtsilä’s technical concepts, the partners aim to provide on-site power capabilities that offer the speed and scalability required by modern cloud and AI operators, bypassing traditional infrastructure bottlenecks.
Joint Evaluation Framework
Under the agreement, the two companies will cooperate to develop initial technical concepts and define performance parameters for selected opportunities. This phase focuses on assessing the feasibility of using Wärtsilä’s engine-based power plants as a primary or backup source. The collaboration leverages Wärtsilä’s experience in data centre power plant design and TGES’s established presence in the Japanese energy market to address specific site requirements.
Engine Technology Advantages
Wärtsilä cites specific operational benefits of its engine solutions compared to traditional gas turbines, noting significantly lower water and fuel consumption. The rapid ramp-up capability of these engines provides dependable power availability, a critical factor for AI workloads that require immediate and consistent energy. Additionally, the modular design of the engines allows for easy scalability, enabling operators to expand capacity as demand grows without major infrastructure overhauls.
Corporate Scale And Scope
Wärtsilä reports a global track record comprising 81 GW of power plant capacity and over 130 energy storage installations across 180 countries. In 2025, the company generated net sales of EUR 6.2 billion, supported by a workforce of 17,900 professionals operating in 78 countries. Approximately 35% of its operating installed base is covered by service agreements, indicating a significant recurring revenue stream from lifecycle support and optimization services.
