The Ten-Year Network Development Plan

​Do you know how to reduce the bulk price of electricity by 5 €/MWh and integrate up to 60% of electricity produces from renewable energy source into the EU grid? Answers to these questions and many more can be found in the only existing pan-European network development plan, the TYNDP.

Long-term network development plan is one of the core missions of any transmission system operator (TSO). It allows them to tailor grids to the evolution of demand and generation, securing an affordable supply of energy for customers in the next decades.

Since 2009 the European legislator has tasked ENTSO-E with the delivery of a European network development plan which builds on national plans and includes specific regional investment plans. Having a European approach to grid planning ensures consistency and cost-efficiency.

Without a well-functioning market, adapted legislation and the proper infrastructure in place, Europe cannot guarantee the decarbonisation of its economy, the development of its internal energy market and its security of supply. The TYNDP is thus key to many of Europe’s economic, climate and energy objectives.

Each TYNDP takes two years to complete. The previous edition, the TYNDP 2016, was published in December 2016. The current edition TYNDP 2018 is already under preparation, follow for updates.


For more information on the TYNDP and the corresponding drafting process please contact

Previous Editions

TYNDP Project Monitoring

In an effort to further increase transparency and usability of the TYNDP, and responding to the recommendations of ACER, ENTSO-E publishes a monitoring in the year between TYNDP reports.

The content of the monitoring reports have been extended overtime. The report publishes quantitative data (e.g. percentage of project commissioned / delayed) ​alongwith the reasoning for ​changes in the status of projects.

ENTSO-E notices that in each monitoring ​exercise around 30% of the projects encounter delays in implementation. The main identified cause for these delays is the difficulty in gaining permits and public support.

Cost Benefit Analysis Methodology CBA 2.0 for TYNDP Project Assessment

​As requested by the Regulation (EU) ​​No 347/2013​, ENTSO-E elaborated a cost and benefit analysis methodology (CBA) to assess the transmission and storage infrastructure projects included in the Ten-Year Network Development Plan (TYNDP).

The CBA was drafted by ENTSO-E after consultation with stakeholders. It was then sent to ACER and the European Commission for opinion and to member states for information. Following the opinions received, the CBA methodology was revised and finally adopted by the Commission early 2015.

Each project included in the TYNDP is assessed using the pan-European CBA methodology. As such the benefit of each TYNDP project is assessed against nine indicators ranging from socio-economic welfare to environmental impact.


Important information relating to the CBA can be found in:

For further information. Your contact person for the CBA in ENTSO-E is

CBA Stakeholder Interaction

25 Apr 2016 - 31 May 2016 Consultation on Cost Benefit Analysis Methodology (CBA 2.0)

7/13 - 15/09/13 Consultation: Cost Benefit Analysis (CBA) Methodology



ENTSOs consistent and interlinked electricity and gas model

In line with the legal requirement Regulation (EU) 347/2013 the electricity and gas ENTSO have been working together to develop the consistent and interlinked electricity and gas model. This model is to be applied by both ENTSOs in the next Ten-Year Network Development Plans 2018.

Download the document

Framing the Future - Scenarios

​Any plan for the future needs to first take a glimpse into the future. Tomorrow has its uncertainties, but a robust planning exercise has no choice but to face the challenge of exploring possible futures. ENTSO-E’s scenarios describe possible future storylines based on economic conditions, technical progress, and political will.

The future is shaped by all of us, and as such also the design of energy scenarios is an activity in which ENTSO-E counts on the views of a broad spectrum of stakeholders. These future storylines may be challenging or pessimistic, but all need to pass the test of being a realistic view of the future worth to analyze in planning studies, rather than being a future as we would like it to be.

These storyline are translated by modelling experts to data requirements and methodologies. A lot of data is captured from external studies, stakeholder assumptions, as well as national and pan-European studies. Detailed calculations result in installed capacities per country per technology, as well as the share some technologies have in the overall energy mix. A well balanced set of diverse scenarios are key to explore which projects are valuable for the future, and to benchmark all of them in the CBA analysis.

How TYNDP scenarios are build?


How are the scenarios used?

In the grid planning exercise, scenario development represents the first step of the process. As such the scenarios set the frame on which market and network studies are done and projects are assessed.

Europe Power System 2040: completing the map & assessing the cost of non-grid

How do we do it? Planning Studies

​Step 1 – Develop scenarios for the future

To identify what Europe needs in terms of electricity transmission infrastructure, one needs to first analyze how the energy landscape will evolve. Some political objectives are set until 2030 but a lot of uncertainties about generation investments, demand evolution, market developments to name a few. The TYNDP scenario development is about framing uncertainties. It is not about predicting the future. Stakeholders are strongly and formally invited to participate to the scenario building. See how you can get involved.

Step 2 – Planning Studies

The TYNDP has four scenarios for the development of the power system. Some have high objectives in terms of renewables, some envisage a more decentralized power system, and some envisage a strong European framework. Based on these scenarios, 200 experts of 41 TSOs in 34 European countries carry out common planning studies. 

Using common methodologies and tools, these experts look at how power will flow in Europe in 2030 taking into account the different scenarios. This allows them to see where bottlenecks will be and how much transmission capacity is needed at borders to manage these flows. 

The results of the planning studies is a series of infrastructure projects. These are only one part of the whole TYNDP projects. The other part is constituted of projects that are not coming from ENTSO-E members and that meet the criteria for inclusion in the TYNDP set by the European Commission. 

The projects resulting from the planning studies take into account the constraints identified in the 6 Regional Investment Plans which are published together with the list of projects. As for the scenarios, the list of projects and regional investment plans are open to public consultation before being finalized.

Step 3 – Projects assessments

The last phase of the planning process in the TYNDP is the assessment of projects. This is done using a European approved methodology to assess the costs and benefits of projects. This assessment is not just a purely economic assessment. It takes into account also how projects support the environment, the welfare in Europe, the security of supply among others. The results of this costs and benefits assessment of projects forms the core of the TYNDP report. 

​By reading the TYNDP report, everyone can see the value of each infrastructure project. The TYNDP is providing decision-makers with a robust and detailed analysis of transmission infrastructure projects on which to base their decisions. One illustration of this is the fact that TYNDP projects and their assessment is used in a European Commission-led process the Projects of Common Interests.

The planning process in a nutshell

projectplanningimage  ​

TYNPD Maps & Data

All maps and data are available from the dedicated TYNDP webpage.

Go to TYNDP Maps & Data

TYNDPs and Projects of Common Interests

​​The Regulation ​(EU) No 347/2013 states that the Projects of Common Interest (PCIs) are selected from the TYNDP list of transmission and storage projects. It is the European Commission and not ENTSO-E who selects and adopts the list of PCIs. The PCIs follow a separate process from that of the TYNDP.

Annex III 2(3) of Regulation (EU) 347/2013 on guidelines for trans-European energy infrastructure stipulates that “…for all … Union lists adopted, proposed electricity transmission and storage projects … shall be part of the latest available 10-year network development plan for electricity, developed by the ENTSO for Electricity….”


This means that a promoter willing to have a project labelled as PCI first needs to apply for the project to be included in ENTSO-E’s TYNDP. For example, only projects which are listed in the upcoming TYNDP 2016 will be considered by the Commission for its 2017 PCI list.

Regulation (EC) 714/2009 on conditions for access to the network for cross-border exchanges in electricity -defining the ENSTO-E legal mandates- gives to the TYNDP a wider scope: to provide a transparent picture of the European electricity transmission network in order to support decision-makers with regard to grid investment at regional and European level.

The PCI process is led by the European Commission.
Please visit the EC website for information on how to submit an application for the PCIs.​

Network Development Stakeholder Group

​​​Stakeholders are involved at all stages of the TYNDP. Because electricity network development has impact in many dimensions of our modern lives, a specific TYNDP stakeholder group has been created by ENTSO-E. Over the years the scope of the now called Network Development Stakeholder Group (NDSG) has been widened. Its role is important in many ways including in helping raise awareness among society of the necessity to develop grid infrastructure.

Views on the TYNDP, the broader challenges facing the power system and the best methods of addressing those challenges differ across countries and regions. The Network Development Stakeholder Group provides an opportunity to hear the views of various organisations in a single setting as it gathers European organisations, incorporating the major ENTSO-E stakeholders.

The target is to create an open and transparent environment in which all involved parties can discuss and debate on the present/future situations and problems along with the possible solutions to be implemented locally and/or at a European level.

The purpose of the forum is not to replace existing ENTSO-E consultations and bilateral meetings, but to further enhance ENTSO-E’s stakeholder collaboration, the exchange of ideas and streamlining of diverging opinions.

Terms of Reference of the Network Development Stakeholders Group

NDSG Outputs: 2014-2016



NDSG Meetings: 2015 -2016 - under the frame of TYNDP 2016

9/06/2016 15th Network Development Stakeholder Group

26/05/2016 14th Network Development Stakeholder Group

6/04/2016 13th Network Development Stakeholder Group

15/10/2015 12th Network Development Stakeholder Group

18/09/2015 11th Network Development Stakeholder Group - webinar

23/06/2015 ​10th Network Development Stakeholder Group

10/03/2015 9th Network Development Stakeholder Group

22/01/2015 8th Network Development Stakeholder Group

NDSG Meetings: 2012 -2014 - under the frame of TYNDP 2014

01/07/2014 7th Stakeholder group meeting

07/04/2014​ 6th Stakeholder group meeting

​- Materials

27/11/2013 5th Stakeholder group meeting

​- Materials

30/09/2013 4th Stakeholder group meeting

27/05/2013 3rd Stakeholder group meeting

27/02/2013 2nd Stakeholder group meeting

12/11/2012 1st Kick-off meeting of the stakeholder group

For more information on the TYNDP and the corresponding drafting process please contact

Stakeholder Interaction

ENTSO-E is continuously striving to increase the stakeholder involvement in the TYNDP process. Even if the TYNDP is non-binding EU regulation foresees that stakeholder should be consulted at every key stages of the process. Representatives of 16 stakeholders are closely participating to the TYNDP through the Stakeholder Network Development Plan. The public and all interested parties is regularly invited to have a say in the TYNDP through consultation, workshops, webinars etc.

TYNDP 2016 Stakeholder Interaction and Consultation

TYNDP 2016 report

​​23 June - 9 Sept 2016

TYNDP 2016 - Regional Investment Plans 2015 consultation

  1. Regional Investment Plan North Sea
  2. Regional Investment Plan Baltic Sea
  3. Regional Investment Plan Continental Central East
  4. Regional Investment Plan Continental Central South
  5. Regional Investment Plan Continental South West
  6. Regional Investment Plan Continental South East

​​24 June - 10 Sept  2015

24 June - 10 Sept 2015

21 May - 22 June 2015

​- Download (see end of the document)

TYNDP 2016 Stakeholder Workshops



24/06/2015 Public Workshop on the Regional Investment Plans and the TYNDP 2016 candidate projects

10/06/2015 TYNDP 2016 webinar: framing the future to design the next pan-European infrastructure

11/03/2015 Second Public Workshop on TYNDP Scenarios Methodology

25/02/2015 Public Workshop on Inclusion of Projects in the TYNDP 2016

16/09/2014 First ​Public Workshop on TYNDP Scenarios Methodology