Overview

  • Author: Association for the Decarbonization of Industry (VZDI), Empa
  • Source: admin.ch
  • Date: November 30, 2025
  • Estimated Reading Time: 4 minutes

Summary

Switzerland's first methane pyrolysis plant was inaugurated in Zug, splitting methane into hydrogen and solid carbon without CO₂ emissions. The plant is the result of collaboration between 16 companies and Empa with investments exceeding CHF 8 million and aims to support Swiss industry on the path to net-zero targets by 2050.

  • The plant uses microwave-based plasma to split methane into hydrogen and solid carbon
  • Annually saves approximately 240 tons of CO₂ and produces 22 tons of hydrogen
  • The hydrogen replaces fossil natural gas in V-ZUG's enameling furnace
  • The solid carbon can be used as raw material for tires, batteries, or as a CO₂ sink in concrete
  • 16 partners from industry and research plus the Canton of Zug are involved
  • The technology uses existing gas infrastructure and can be rapidly deployed worldwide
  • Vision: Combination with solar methanation in desert regions for negative CO₂ emissions

Opportunities and Risks

Opportunities:

  • Decarbonization of industrial high-temperature processes without new infrastructure
  • Circular economy through utilization of solid carbon as raw material
  • Scalability: Technology can be deployed globally via existing gas networks
  • Potential for negative emissions through combination with renewable methanation

Risks:

  • Pilot plant with 22 tons of hydrogen per year is still very small-scale
  • Economic viability at industrial scale not yet proven [⚠️ To be verified]
  • Dependence on methane availability (natural gas/biogas) remains
  • Long-term sink effect of carbon in concrete/asphalt unclear [⚠️ To be verified]

Future Outlook

Short-term (1 year): The pilot plant collects operational data and optimizes the process. V-ZUG gradually reduces CO₂ emissions from its enameling facility.

Medium-term (5 years): Scaling of the technology to additional industrial sites in Switzerland. Establishment of cooperation for global ecosystems with solar methanation in sun-rich regions.

Long-term (10–20 years): Establishment of a circular system with renewable methane transported via existing infrastructure and pyrolyzed on-site. Potentially negative net emissions through carbon sinks.

Fact Check

Well documented:

  • Technical functionality of methane pyrolysis (plasma splitting)
  • Investment sum of CHF 8 million and number of partners
  • Annual CO₂ savings (240 tons) and hydrogen production (22 tons)
  • Existence of Empa pilot plant "move-MEGA" for methanation

Missing data/transparency:

  • Production costs per kilogram of hydrogen compared to alternatives
  • Energy efficiency of microwave-based pyrolysis
  • Concrete utilization pathways and quantities for solid carbon
  • Timeline and financing for global scaling projects

Brief Assessment

The methane pyrolysis plant in Zug demonstrates an innovative pathway for CO₂-free use of methane in industry. With 240 tons of annual CO₂ savings, the pilot plant is an important research project but still far from industrial relevance. The critical question will be whether the technology can be scaled economically and whether solid carbon can be established as a permanent sink.

Three Key Questions

  1. Freedom: Does the technology strengthen Swiss industry's independence from fossil imports, or does it create new dependencies on specific infrastructure and methane sources?

  2. Responsibility: Who bears responsibility for the long-term CO₂ sink effect of the carbon – and how is it ensured that it won't be released again as CO₂ later?

  3. Transparency: What are the actual production costs per kilogram of hydrogen, and how transparently do the partners communicate economic competitiveness compared to other decarbonization approaches?