Europe is turning to iron powder as a heating fuel — and a Dutch startup just raised €114 million to scale it

What Rift is doing

It has been reported that Dutch startup Rift has raised nearly €114 million in private financing and public grants to develop commercial iron‑fuel heating projects. Rift’s pitch is simple and striking: use powdered iron as a storable, transportable fuel for industrial and district heating instead of natural gas. Industrial heat is one of the hardest sectors to decarbonize, accounting for more than a third of global energy‑related carbon emissions. Can a pile of rust be the answer?

How the technology works

In Rift’s system iron is milled to a sand‑like powder, injected into a bespoke boiler and ignited with air; the iron oxidizes, releasing heat while transforming into iron oxide (rust) rather than being “consumed” irretrievably. The spent oxide is then collected and — in the company’s closed loop — reduced back to metallic iron using low‑carbon hydrogen or renewable electricity, creating a reusable fuel cycle. The basic idea mirrors long‑studied “metal fuel” and energy‑storage concepts: store renewable energy by making metal, then release it later by re‑oxidizing that metal. Rift targets mid‑temperature industrial heat (~250°C) and says the boilers can also feed district heating or supplement electrified systems when electricity is expensive or constrained.

Commercial rollout and provenance

Rift’s technology traces to research from Eindhoven University of Technology and collaborators in Canada; small demonstrations have already run in Dutch breweries and in a 1 MW pilot that reportedly heated hundreds of homes. The company has pilots operating in the Netherlands and signed a 2025 contract with Kingspan Unidek to install an iron‑fuel boiler in a factory. Rift plans a first commercial fuel plant and aims to deploy systems across about 10 European industrial sites, with the earliest commercial project slated for 2029. Other players — including Iron+ (Netherlands), Altiro Energy (Canada), FeX Energy, GH Power, Ferron Energy (Australia) and Fenix Energy (France) — are pushing similar metal‑fuel approaches.

Hurdles and geopolitical context

Promising? Yes. Plug‑and‑play? Not yet. Challenges remain: improving conversion and oxide‑collection efficiency, building a circular supply chain for iron powder, and scaling green hydrogen or electrolytic capacity to make the reduction step low‑carbon. Economics matter too — current feedstock and reduction costs mean iron fuel must compete with cheap pipeline gas, grid electricity and nascent hydrogen markets. Geopolitically, Europe’s search for alternatives to imported fossil gas after recent disruptions has accelerated interest in fuel carriers that can be shipped and stored easily. Metal fuels sidestep some hydrogen‑transport headaches, but widespread adoption will depend on policy signals (carbon pricing, industrial heating incentives) and who bears the cost of building a new circular industry.