The Guidance on the Applicability of the Convention to the Lifetime Extension of Nuclear Power Plants was prepared by an ad hoc working group co-chaired by Germany and the United Kingdom of Great Britain and Northern Ireland, as mandated by the Meeting of the Parties to the Convention on Environmental Impact Assessment in a Transboundary Context (ECE/MP.EIA/27/Add.1–ECE/MP.EIA/SEA/11/Add.1, decision IS/2, para. 9), and reflecting the comments made by the Working Group on Environmental Impact Assessment and Strategic Environmental Assessment at its ninth meeting (Geneva, 24–26 August 2020) (ECE/MP.EIA/2020/9).

At its eighth session (Vilnius (online), 8–11 December 2020), the Meeting of the Parties to the Convention endorsed the Guidance, as amended, through its decision VIII/6. The publication contains decision VIII/6 and the Guidance, as endorsed and edited, in English, French and Russian.