Table 1.
List of hydrogen limits allowed in the natural gas grid per country.
| Maximum H2 content in high pressure gas pipeline |
||
|---|---|---|
| Country | volume/molar % | % Mass |
| Czech Republica | 0 | 0 |
| Irelanda | 0.1 | 0.013 |
| UKa | 0.1 | 0.013 |
| Belgiuma | 0.1 | 0.013 |
| Swedena | 0.5 | 0.063 |
| Hollanda | 0.5 | 0.063 |
| Austriaa | 4 | 0.524 |
| Switzerlanda | 4 | 0.524 |
| Francea | 6 | 0.802 |
| Germanya | 10 | 1.396 |
| Case1b | 2 | 0.256 |
| Case 2b | 5 | 0.661 |
| Case 3b | 10 | 1.396 |
aAdapted from M. Svensson[21]
bCases were proposed by Altfeld and Pinchbeck [22].
Case 1 – If a CNG filling station is connected.
Case 2 – If no filling station, gas turbine or gas engines with H2 specification <5% connected.
Case 3 – If no filling station, gas turbine or gas engines with H2 specification <10% connected.