H2 quality requirements

This LAP is concerned with the gas quality issues for hydrogen injection and transport in the low pressure DSO local gas grid, including gas quality monitoring and metering in relation to payment terms and responsibilities for monitoring and metering


Requirements related to the quality of hydrogen (in relation to the composition of the gas(blend) as well as its physical property
Hydrogen quality is a term to describe the gas quality for use in the natural gas grid.
Is it a barrier?
Type of Barrier
Operational barriers
Assessment Severity
The DK system is based on a clear set of charges and arrangements between injection / off–take of gas and local transport and transmission – but it is the undefined max concentration of H2 that limits H2 input to the gas grid


Question 1 What is the basis for the billing of Hydrogen and Hydrogen Natural Gas Mixtures? Only the energy flow (kWh) or are other properties involved?
kWh is the basis for billing. Further detail are not yet settled.
Question 2 What are the legal and administrative requirements and responsibilities with regard to real-time Measurement Technologies for the monitoring and billing of Hydrogen Natural-Gas Mixtures? Do they differ from the requirements for natural gas?
Not yet determined
Question 3 Are there other hydrogen quality related legal and administrative requirements to allow the injection of hydrogen in the grid?
The H2 quality must comply with Gas regulations chapter C12
Question 4 How is the responsibility in your country organized with regard to the measurement and other injection related quality requirements? Is this the responsibility of the producer, the DSO or a third party?
Describe the comparable technology and its relevance with regard to hydrogen

National legislation:

EU Legislation:

  • Directive 2009/73/EC concerning common rules for the internal market in natural gas
    Directive 2009/73/EC establishes common rules for the transmission, distribution, supply and storage of natural gas.

    Its provisions and obligations apply to Hydrogen Gas by virtue of Article 1 (2), which states that the rules established by this Directive for natural gas, including LNG, shall also apply in a non–discriminatory way to biogas and gas from biomass or other types of gas in so far as such gases can technically and safely be injected into, and transported through, the natural gas system.

    Article 25 establishes the “Tasks of the distribution system operator” which include: ensuring the long-term ability of the system to meet reasonable demands for the distribution of gas […];shall provide any other distribution, transmission, LNG, and/or storage system operator with sufficient information […] as well as to ensure that the system operator does not discriminate between system users or classes of system including, including e.g. when setting rules for the charging of system users, etc

    Article 32 sets the rules on “Third party access”: access to the transmission and distribution system, and LNG facilities shall be based on published tariffs, applicable to all eligible customers, including supply undertakings, and applied objectively and without discrimination between system users.