A conventional steam methanol reformer stands roughly six stories tall and stretches 30 meters end to end. Topsoe thinks it can shrink that down to a few cubic meters.
At a research facility in Foulum, Denmark, the Danish catalyst company is assembling a compact, electrically heated reactor designed to produce methanol from biogas — including the CO2-rich fraction that most producers currently separate and vent as waste. The machine runs on renewable electricity rather than natural gas, and it’s small enough to fit where traditional industrial plants never could.
A reactor the size of a desk, not a building
Traditional steam methane reformers are industrial behemoths. Standing up to six stories tall and stretching 30 meters in length, they require substantial infrastructure and dedicated industrial sites. That scale has historically made decentralized or small-footprint methanol production economically impractical.
Topsoe’s eSMR™ technology, published in Science, takes a fundamentally different approach. Instead of burning natural gas to heat the reforming process, it applies direct electric heating to the catalytic reaction. The result is a unit that could be roughly 100 times smaller than a conventional reformer — compressing what once occupied a building into just a few cubic meters.
The eSMR Methanol™ variant adapts this platform specifically for methanol production using biogas as the feedstock. According to Peter Mølgaard Mortensen, Principal Scientist at Topsoe, that compact footprint makes it “a very attractive solution for decentral biogas sites and world scale producers alike.”
Turning biogas ‘waste’ into a valuable fuel
Biogas isn’t pure methane. Roughly 40% of it is CO2 — a fraction that must be separated before the remaining gas can enter a natural gas grid. That separation process costs money, and the CO2 is typically vented into the atmosphere rather than put to use.
The eSMR Methanol™ process treats that CO2 fraction as a resource rather than a liability. By incorporating it directly into the methanol synthesis pathway, the technology extracts more value from the same volume of biogas. No carbon is discarded.
When the electricity powering the reactor comes from wind turbines or solar panels, the full production chain becomes CO2-neutral. That combination — biogas feedstock plus green electricity — is what Topsoe says enables the process to meet the environmental bar for sustainable methanol. The economics matter too. Grid-quality biogas currently costs significantly more to produce than the fossil natural gas it competes with, so shifting toward methanol production, which commands a higher market value, could meaningfully improve the financial position of biogas producers who today struggle to compete on price.
The demonstration plant taking shape in Denmark
The Foulum facility is where laboratory results face their first real-world test. Topsoe is building a 10 kg/hour methanol demonstration plant at Aarhus University’s research campus, with the goal of proving the technology works at near-industrial scale.
Funding comes from EUDP — Denmark’s Energy Technology Development and Demonstration Program — and the project brings together eight partner organizations: Aarhus University, the Technical University of Denmark (DTU), Aalborg University, Energinet, Sintex, Blue World Technology, and PlanEnergi.
The plant was scheduled to be fully operational by early 2022. Topsoe describes the project as an opportunity to “repeat the very promising results we have achieved in the laboratory at an industrial scale” — language that signals confidence in the underlying science while acknowledging that demonstration-scale validation remains a necessary step.
Why methanol — and why now
Methanol occupies a useful position in the energy and chemicals landscape. It functions as a clean-burning fuel in its own right and serves as a chemical intermediate in the production of plastics and polymers. That versatility opens multiple potential markets, which matters when evaluating whether a new production pathway can be commercially sustainable.
For biogas producers, the calculus is fairly direct. Sustainable methanol could command a significant price premium over grid-quality biogas, improving revenues without requiring a complete overhaul of the underlying feedstock supply chain. The biogas infrastructure already exists; the eSMR Methanol™ technology would simply redirect what comes out of it.
The broader chemical industry is also under growing pressure to cut its carbon footprint. Electrified reactors represent one credible pathway — but only if they don’t force producers to absorb higher costs. Mortensen frames the technology as precisely that kind of solution: “a viable way to transform the industry going towards greener processes without increasing production cost.”
What to watch next
The Foulum demonstration plant is the critical next milestone. If the 10 kg/hour unit confirms that sustainable methanol can be produced at costs competitive with fossil-fuel-based production, it would validate both the technical and economic case for scaling the technology further.
Broader deployment will depend on whether that cost parity holds as plant sizes increase — and whether the supply of green electricity stays affordable enough to underpin the economics. The coming operational results from Foulum will offer the first real data point on both questions.
