Finland's Newest Power Plant Splits Natural Gas Instead of Burning It
Finland’s Newest Power Plant Splits Natural Gas Instead of Burning It
Meta Title: Finland’s New Power Plant Splits Natural Gas Into Hydrogen
Finland is exploring a new approach to gas-fired electricity generation that could fundamentally change how natural gas is used in power plants.
Instead of directly burning natural gas and releasing its carbon as carbon dioxide, GEN-H Energy and Finnish technology company Hycamite are planning a 200–300 MW balancing power facility in Kotka based on methane pyrolysis.
The concept is relatively simple: split methane into hydrogen and solid carbon, then use the hydrogen to generate electricity.
Natural Gas Without Conventional Combustion
Traditional gas-fired power plants burn methane. The carbon contained in the methane combines with oxygen and is released primarily as CO₂.
Methane pyrolysis takes a different route.
Instead of:
Methane → Combustion → CO₂ + Water + Energy
the process separates methane into:
Methane → Hydrogen + Solid Carbon
Hycamite says its technology uses heat and a catalyst to decompose methane while avoiding direct greenhouse-gas emissions during the splitting process. The resulting hydrogen can then be used for power generation, while the carbon is recovered as a solid material.
That distinction is at the heart of the Finnish project.
A 200–300 MW Flexible Power Plant
GEN-H Energy and Hycamite signed a memorandum of understanding for the proposed project in Kotka, Finland, with a planned capacity of 200–300 MW.
The facility would be designed as a balancing power plant, meaning it could provide electricity when renewable generation is insufficient.
Finland has been rapidly expanding renewable electricity, particularly wind power. However, wind generation varies with weather conditions. A flexible power source can therefore help maintain electricity supply during periods when wind output falls.
The proposed facility would integrate Hycamite's methane-pyrolysis technology with an electricity-generating gas power station.
What Happens Inside the Process?
The technology essentially changes the role of natural gas.
Step 1: Methane enters the system
Natural gas is primarily composed of methane. The gas is supplied to the methane-splitting equipment rather than being sent directly to a conventional burner.
Step 2: Methane is split
Hycamite's process uses heat and a catalyst to break methane molecules apart.
The result is:
Hydrogen (H₂)
Solid carbon (C)
Unlike conventional natural-gas combustion, the carbon does not immediately become CO₂ and enter the atmosphere.
Step 3: Hydrogen is used for power generation
The hydrogen can then be used in a gas turbine or other power-generation equipment.
According to Hycamite, hydrogen combustion produces water vapour as the combustion by-product, rather than CO₂ from the carbon contained in methane.
Step 4: Solid carbon becomes a product
The carbon produced by methane splitting is not necessarily treated as waste.
Hycamite is developing applications for solid carbon in industrial materials, including potential graphite applications for electric-vehicle batteries. (Hycamite)
This creates the possibility of turning part of the carbon contained in natural gas into a commercially useful material.
Why Not Simply Use Green Hydrogen?
Finland is also developing conventional renewable-hydrogen production.
For example, Fortum's Kalla hydrogen test centre in Loviisa is testing both alkaline and PEM electrolysers. The facility is designed to provide information for future Power-to-X projects.
Methane pyrolysis takes a different route.
Electrolysis uses electricity to split water:
Water + Electricity → Hydrogen + Oxygen
Methane pyrolysis instead uses methane as the feedstock:
Methane + Heat → Hydrogen + Solid Carbon
Hycamite says its methane-splitting process requires significantly less energy than electrolysis, potentially allowing hydrogen production without depending entirely on the availability of large amounts of renewable electricity.
However, the climate benefits depend heavily on the methane source, process energy, methane leakage and how the resulting hydrogen and carbon are ultimately used.
Why Kotka Is Important
The proposed facility would be located in the Sunila industrial district of Kotka, an area with existing industrial and energy infrastructure.
The site was historically associated with a large pulp mill and already has access to Finland's natural-gas network.
GEN-H says the existing gas connection has a capacity of approximately 145–270 MW, providing a potentially useful foundation for the proposed project. This existing infrastructure could reduce the amount of completely new energy infrastructure required for the development.
The wider Sunila site is also being developed as an industrial and clean-energy hub.
Finland’s Balancing Power Challenge
The project is particularly interesting because it is not being proposed simply as a conventional baseload power station.
Its primary purpose would be flexible electricity generation.
When renewable electricity production is high, the grid can rely heavily on wind and other low-carbon sources. When renewable output falls, flexible generation can help fill the gap.
GEN-H and Hycamite see hydrogen-based generation as a potential option for longer periods of low renewable output, including cold and low-wind conditions.
Finland's gas-network operator Gasgrid has also reported renewed interest in gas connections for electricity generation and backup power, while simultaneously noting growing interest in renewable biomethane and synthetic e-methane.
Europe’s Methane-Splitting Opportunity
The Kotka project builds on technology that is already being demonstrated in Finland.
In Kokkola, Hycamite opened what it described as Europe's largest methane-splitting plant in 2024. Its Customer Sample Facility was designed for nominal production of up to 2,000 tonnes of hydrogen and 6,000 tonnes of carbon per year when fully operational.
That facility provides an important stepping stone between laboratory development and larger industrial applications.
The proposed Kotka project would take the concept into a completely different scale by connecting methane splitting directly with electricity generation.
The Bigger Picture
The project represents an unusual intersection between three major energy trends:
Natural gas infrastructure + hydrogen + renewable power balancing.
Rather than abandoning existing gas infrastructure completely, the concept attempts to transform how that infrastructure is used.
Natural gas becomes a feedstock for producing hydrogen, while the carbon is separated before the hydrogen reaches the power-generation stage.
At the same time, the resulting hydrogen can potentially provide dispatchable electricity when variable renewable generation is unavailable.
Whether this model can become commercially competitive at 200–300 MW scale will depend on construction costs, methane prices, hydrogen production efficiency, carbon-product markets, infrastructure requirements and the project's overall emissions profile.
For now, the proposed Kotka facility offers a notable glimpse into a different approach to gas-based power generation: instead of burning methane and sending its carbon into the atmosphere, split it first and use the resulting hydrogen as the fuel.
Source
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