Elcogen has launched its next-generation solid oxide fuel cell and electrolyser stack platform, the elcoStack E3000 G2. The company says the platform delivers stronger performance and better economics for sustainable energy systems, while also being designed from the ground up for scalable mass manufacturing.
That manufacturing-first approach is intended to support faster industrial deployment at higher volumes and lower unit cost than the previous generation.
The launch of solid oxide fuel cell and electrolyser stack platform comes at a time when electrification is accelerating, grid capacity is under pressure, and renewable energy remains intermittent.
At the same time, geopolitical concerns are increasing demand for secure local energy production and more efficient use of resources where every unit of fuel and electricity matters. Against that backdrop, Elcogen is positioning the new solid oxide fuel cell stack as a practical platform for the next phase of distributed energy.
Built for scale and flexibility
Key improvements in the E3000 G2 platform include longer lifetime, slower degradation, and better resistance to wear, all of which support stronger long-term reliability.
The stack also operates across a wider load range, with solid partial-load stability and dependable performance under thermal cycling, helping it maintain consistency in dynamic operating conditions.
Cost is another major focus. Elcogen says the simplified, manufacturing-ready design lowers cost per kW and creates a clear path to further reductions through mass production.
The E3000 G2 is based on the company’s earlier E3000 platform, but has been fully redesigned with large-scale manufacturing in mind, moving it from bespoke project deployments toward repeatable industrial rollout.
In fuel cell, or SOFC, mode, the platform is fuel-flexible and can use locally available fuels such as hydrogen, biofuels, and natural gas. That makes it suitable for on-site power generation tailored to regional energy availability, with up to 75% electrical efficiency and up to 90% efficiency when waste heat is recovered.
The system also works in electrolysis, or SOEC, mode for green hydrogen production using renewable energy, with efficiency of 33 kWh/kg.
The new solid oxide fuel cell and electrolyser stack platform runs at lower temperatures than most conventional solid oxide technologies around 650–750°C compared with 700-850°C which allows the use of more cost-effective materials.
That operating range also supports both hydrocarbon fuel use and electrolyser performance, helping reduce system-level costs.
Broader energy applications
Elcogen describes the E3000 G2 as an application-agnostic platform that can serve a wide range of system developers and integrators. Data centres, one of the fastest-growing and most power-constrained sectors, are a major target use case.
On-site SOFC-based power can help operators avoid long grid connection delays, speed up commissioning, improve resilience, and support lower-emissions operations.
Beyond digital infrastructure, the platform is also aimed at industrial decarbonisation. It can support green steel production, ammonia synthesis, and other hydrogen-intensive chemical refining processes, where green hydrogen serves as both a feedstock and an energy source. That makes it relevant for sectors where electrification alone is not enough and low-carbon molecules are essential to reaching net-zero goals.
Other potential applications include off-grid EV charging and residential heat and power, giving the platform a broad set of use cases without requiring major redesign.
Expanding manufacturing capacity
To support future demand, Elcogen has also expanded its manufacturing footprint. Its new 14,000 m² ELCO I facility in Tallinn, Estonia, increases production capacity from 10 MW to 360 MW, with a path toward multi-gigawatt scale.
The facility is built around high-throughput, standardised production processes that are designed to deliver consistent quality at volume.
Elcogen says this manufacturing base will shorten lead times, improve cost structures for customers, and help the company move from pilot projects to large-scale industrial deployment more quickly.
Leadership Comments
“The time is right for this technology,” says Enn Õunpuu, CEO & Founder of Elcogen. “Fuel combustion is inefficient and creates harmful pollutants. It’s time to consign the internal combustion engine to the history books. Electrochemical conversion technology can support industries that need to decarbonise, including the fast-growing data centre sector, which demands reliable, on-site, low- to no-carbon power. As energy systems become increasingly decentralised and diverse, solutions must be scalable, flexible, and able to utilise locally available energy sources.”
“This openness is critical to scaling the energy transition. At Elcogen, we deliberately focus on supplying core components that integrate into third-party systems, rather than pursuing vertical integration or developing complete systems ourselves. This allows a much broader ecosystem of designers and integrators to innovate on top of our technology, lowering barriers and accelerating adoption across multiple sectors 
simultaneously,” shares Õunpuu, adding, “With the E3000 G2, we have combined performance, durability, flexibility and manufacturability into a single platform designed for industrial deployment, giving partners the tools to adapt to their specific energy environments while scaling rapidly.”
“As the name implies, ELCO I serves as a flagship model designed to guide future development initiatives globally. We plan to license our technology and manufacturing blueprint to trusted partners, supporting domestic production and more resilient supply chains while maintaining consistent IP control,” shares Õunpuu, adding “Drawing on our end-to-end factory development experience, we can help partners move from licensing to production readiness in as few as 14 months, a capability that significantly accelerates industrial scale-up while ensuring consistent quality and performance standards.”
