The TYNDPs are infrastructure development plans to ensure a coordinated pan-European approach to electricity and gas grid development, drawn up by ENTSO-E and ENTSOG respectively.

The 5th PCI list will be adopted by the European Commission by the end of 2021 under the existing regulation on Trans-European Energy Networks (TEN-E).

Regulation (EU) No 347/2013 on guidelines for trans-European energy infrastructure. On 15 December 2020, the European Commission adopted a proposal to revise the 2013 regulation