NEA Mandates and Structures

Ad Hoc Expert Group on Maintaining Low-Carbon Generation Capacity through LTO of Nuclear Power Plants: Economic, Technical and Policy Aspects (LTO)

Chair(s): Secretary:  Antonio VAYA SOLER
Member(s):All NEA member countries
Full participant(s): European Commission
Under the NEA Statute
Observer(s)(International Organisation): International Atomic Energy Agency (IAEA)
By agreement
Date of creation:01 April 2018
End of mandate:31 December 2021

Mandate (Document reference):

Mandate (Document extract):

Extract from document NEA/NDC(2020)5/FINAL


The study will review the technical and economic aspects of long-term operation (LTO) of existing nuclear power plants (NPPs) and their interaction, taking into account the following items:

In the coming years, a large number of owners of NPPs will have to make decisions on extending the lifetime of their plants and their continued operation taking these factors into consideration, as they impact the overall competitiveness of their nuclear plants within the overall generation mix. This will be happening while a number of governments are developing policies to decarbonise their energy systems, and in particular the electricity mix. Hence the question of LTO will also be analysed from a decarbonisation policy viewpoint.  

WORKING METHODS (organisational structure and mode of operation and co-operation)

Members of the expert group will be nominated by the members of the Committee for Technical and Economic Studies on Nuclear Energy Development and the Fuel Cycle (NDC). The Ad hoc Expert Group will collaborate with the International Energy Agency (IEA), notably with its Energy Technology Policy (ETP) Division, which makes assumptions on LTO in various countries as part of their 2°C Scenario (2DS) analysis, as well with as industry representatives as necessary and approved by the NDC.

Nominated experts will meet on a regular basis (approximately twice a year) to:


The Ad hoc Expert Group will produce a report with the support of the Secretariat.

The Ad Hoc Expert Group will be disbanded upon complettion and publication of the report.