THOTH2: Novel methods of testing for measurement of natural gas and hydrogen mixtures

February 2023
– July 2025

An immediate shift in focus toward energy independence and a transition to green energy is required by the EU’s energy strategy. In order to decarbonize the EU and decouple intermittent renewable energy supply and demand while maintaining the stability of the electric grid, green hydrogen (H2) is an essential component of an alternative fuel. Since huge H2 volumes can be carried over long distances and gas cross-border transmission capacities are notably high, enhancing countries’ exports/imports of renewable energy, H2 blending in existing gas infrastructure can play a key role in enabling the green transition. This project aims to provide answers to how new mixtures may coexist with existing installed devices in the gas value chain, such as measurement ones, in order to promote H2 blending in the future.

When conveying pure H2 or H2NG mixtures, THOTH2 intends to fill the gaps in normative and standards related to procedures and protocols for assessing the performances and determining the limits and tolerances of State of the Art (SoA) measurement instruments in transmission and distribution systems. In order to test various measuring devices installed in the gas transmission and distribution grids, such as gas meters, gas volume conversion devices, pressure and temperature transducers, gas quality analysers, and gas leak detectors, at various operational conditions, THOTH2 will develop specialized methodologies. The findings of THOTH2 will be useful in forming suggestions for the Technical Committees (TC) of International Standard Bodies, Gas Transmission and Distribution Operators (TSOs, DSOs), Manufacturers of Measuring Devices, and Calibration Service Providers.

The THOTH2 project consists of 6 different work packages:

  • WP1: SOA, Barriers and Bias on Metering Devices for NG Blend – UNIBO
  • WP2: Methodology and Test Protocols – CESAME
  • WP3: Testing and Validation – INIG
  • WP4: Standardization and Market Implementation – GRTgaz
  • WP5: Dissemination, Communication and Exploitation – GERG
  • WP6: Coordination and Project Management – SNAM

THOTH2 counts thirteen partners from European countries that will work together on this project over 30 months.

To learn more about the project visit the THOTH2 website.

This project has received funding from the Clean Hydrogen Partnership under Grant Agreement No 101101540. This Partnership receives support from the European Union’s Horizon Europe Research and Innovation program, Hydrogen Europe and Hydrogen Europe Research