Volkswagen's pilot project in Poland demonstrates hydrogen blending as a practical route to decarbonise industrial heat

At its Poznań vehicle factory in Poland, Volkswagen has begun a pilot to blend electrolytic hydrogen and oxygen into an existing 1.5 MW natural‑gas burner, a pragmatic retrofit aimed at cutting on‑site fossil fuel use for high‑temperature industrial heat. According to the original report, the installation centres on a 90 kW alkaline electrolyser supplied by Bulgarian firm Hydrogenera, which splits water into separate streams of high‑purity hydrogen and oxygen for direct injection into the burner system.

The technical approach is straightforward: hydrogen is metered into the natural‑gas feed while oxygen is introduced alongside the combustion air. That dual‑gas injection raises flame temperature and completeness of combustion, which modelling and initial runs indicate can reduce gas consumption , and therefore direct CO2 emissions , by up to about 30% without altering the plant’s automation, safety systems or production lines. Industry reporting adds that the electrolyser was chosen for continuous duty and delivers uninterrupted H2 and O2 streams suitable for industrial firing applications.

For manufacturers wrestling with decarbonisation of process heat, the appeal is clear. Kilns, dryers and furnaces are among the hardest assets to electrify at scale; blending renewable hydrogen into existing burners can shrink Scope 1 emissions while avoiding costly redesign of thermal equipment. The Poznań pilot is emblematic of a broader strategy at Volkswagen to diversify decarbonisation levers across its operations: alongside battery production, closed‑loop recycling and renewables procurement, the company is testing hydrogen‑enhanced combustion as a near‑term route to lower emissions in legacy thermal processes.

The choice of a regional supplier also carries strategic significance. Hydrogenera , operating under the Green Innovation umbrella and, according to market notices, listed on the Bulgarian stock exchange in July 2025 , has until now focused on small‑scale pilots. Securing Volkswagen’s supplier approval for this 90 kW unit represents a step up into heavy‑duty industrial heat applications, and a potential beachhead for similar projects in sectors with large thermal loads, such as ceramics, steel or chemicals.

Poland’s wider hydrogen ecosystem provides a supportive policy and market backdrop. The national hydrogen strategy, rolled out from around 2020, has already steered pilots in mobility and refuelling infrastructure , from hydrogen buses deployed in Poznań to refuelling projects led by major oil and gas companies , and industry observers say an industrial combustion retrofit aligns with that national push to localise low‑carbon feedstocks.

That said, several caveats remain for scaling. Converting a successful 90 kW demonstration into multi‑megawatt electrolyser farms requires cost‑competitive renewable electricity, streamlined permitting for on‑site electrolysis and harmonised rules for burner blending that vary by jurisdiction. Capital costs for large electrolysers, integration complexity, and safety and emissions permitting are non‑trivial hurdles. Project proponents note these frictions can be reduced over time as pilots mature and regulatory frameworks evolve, but they are material near‑term constraints.

Volkswagen plans to complete the Poznań retrofit by mid‑2026 and has a second installation queued for its Września site, signalling the company intends to validate real‑world performance at scale. If operational data confirm the projected ~30% gas savings and equivalent CO2 reductions with reliable uptime and manageable maintenance, hydrogen‑enhanced combustion could become a widely adopted decarbonisation lever for factories across Europe , particularly where direct electrification is impractical.

For industrial energy managers and decarbonisation professionals, the pilot offers an instructive case: a modest‑scale electrolyser, tightly integrated to existing burners, can deliver measurable fuel and emissions reductions while preserving plant operations. The broader applicability will hinge on hydrogen availability from renewable power, capex trajectories for larger electrolysers, and the resolution of cross‑sector permitting and safety standards. As regulatory pressure and carbon pricing tighten, such retrofits may move from pilot to mainstream as part of a diversified pathway to net zero heat.