Proposal for VoLL, CONE and Reliability Standard Methodology

Closed 30 Jan 2020

Opened 5 Dec 2019

Results updated 27 May 2020



The recent legislative package on Clean Energy for all Europeans, specifically Regulation 2019/943 of 5 June 2019 on the internal market for electricity, places resource adequacy in a central position in the European energy policy context. As per Article 23 of the Electricity Regulation, ENTSO-E is required to develop a methodology for a European resource adequacy assessment, which should consider scenarios without existing or planned capacity mechanisms and where applicable, with such mechanisms, increased temporal granularity and sensitivities, Flow-Based capacity calculations and sectoral integration, among others. In addition to the methodology for the European resource adequacy assessment, ENTSO-E is tasked by the Electricity Regulation to develop a methodology for calculating the value of lost load, the cost of a new entry in generation and/or demand response and for a reliability standard, based on objective and verifiable criteria.

This consultation concerns ENTSO-E's proposal for a Methodology for calculating the Value of Lost Load (VoLL), the Cost of New Entry (CONE) and the Reliability Standard in accordance with Article 23 of Regulation (EU) 2019/943.

The regulation requires that ENTSO-E develops the Methodology for calculating the VoLL, the CONE and the Reliability Standard, and consults stakeholders before submitting it to ACER.

A stakeholder workshop will take place on 16 December 2019. Registration links and further details about the workshop can be found at this link.

Why your views matter

ENTSO-E consults on the proposal for the Methodology for calculating the VoLL, the CONE and the Reliability Standard to get inputs from stakeholders on the proposal and to fulfil the requirements of Regulation 2019/943.


  • Stakeholder workshop on European resource adequacy assessment methodologies

    From 16 Dec 2019 at 09:00 to 16 Dec 2019 at 15:00

    At the stakeholder workshop, ENTSO-E will present the methodologies for the European resource adequacy assessment, the Value of Lost Load, the Cost of new entry, and the reliability standard, explain the assumptions and scenarios underpinning them, and outline the next steps. Stakeholders will have the opportunity to exchange views and discuss key questions with the drafting teams.


  • ENTSO-E stakeholders


  • System Operations Code
  • Adequacy reports