Our key tasks

We are primarily tasked with providing power transmission services, system services and facilitating the energy market. Our core tasks follow from our appointment as grid operator under the Dutch 'Elektriciteitswet' (E-wet) and the German 'Energiewirtschaftsgesetz' (EnWG).

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TenneT presents Hub and Spoke concept for large scale wind energy on the North Sea.

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Our grid

TenneT manages the high-voltage grid in the Netherlands and large parts of Germany. TenneT transmits electricity at 110,000 volts (110 kV) and higher. With around 23,500 kilometres of high-voltage lines, we cross borders and connect countries.

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Grid maps

Maps of our onshore and offshore high-voltage grid.

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Electricity market

The energy sector is developing rapidly. The process of European market integration began some years ago. Its purpose is to create a single European market that enables market parties to trade gas and electricity across national borders easily and efficiently.

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Transparency data

We provide transparency data on our operations on our Dutch and German transparency page and on ENTSO-E. 

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Our vision is to be one of the most transparent Transmission System Operators (TSO) in Europe and thereby creating value for society. In this Energy Insights section we present selected energy related topics and show data, information and valuable insights. 



Facts & figures related to TenneT facilitating the market can be found here.

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TenneT is a leading European electricity transmission system operator (TSO), with activities in the Netherlands and in Germany. We strive to ensure a reliable and uninterrupted supply of electricity in our high-voltage grid for some 42 million people.

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We are TenneT

Meet us

Urgent Market Messages - Planned Maintenance (NL)

TenneT TSO B.V. publishes on this webpage all necessary information on planned maintenance in its Extra High voltage network and on the interconnections in accordance with national and international requirements i.e. Art. 4.1 of the REMIT legislation.

This page was last modified on November 28, 2020

November 2020

Element nameAsset TypeBiddingzoneWeek 44Week 45Week 46Week 47Week 48Week 49
Eemshaven - Meeden 380 BlackInternal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Ens - Zwolle 380 BlackInternal lineD/ND/ND/ND/ND/N
Krimpen a/d IJssel - Geertruidenberg 380 WhiteInternal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Crayestein - Krimpen a/d IJssel 380 BlackInternal LineD/ND/N
Maasvlakte - Simonshaven 380 BlackInternal LineD/ND/ND/ND/ND/N
Simonshaven - Crayestein 380 BlackInternal LineD/ND/ND/ND/ND/N
Westerlee - Maasvlakte 380 WhiteInternal LineD/ND/ND/N
Westerlee - Maasvlakte 380 BlackInternal LineD/ND/N
Geertruidenberg - Eindhoven 380 WhiteInternal LineD/N
Wateringen - Westerlee 380 WhiteInternal LineD/ND/N
Borssele Alpha 66 String HStation from 10:00till 17:0016:00 - 16:30
Borssele Alpha 66 String GStation12:00 - 12:30
Borssele Alpha 66 String JStation13:00 - 13:30
Borssele Alpha 66 String AStation14:00 - 14:30
Borssele Alpha 66 String EStation15:00 - 15:30
Borssele Alpha 66 String LStation10:30 - 11:00
Borssele Alpha 66 String CStation12:30 - 13:00
Borssele Alpha 66 String FStation14:30 - 15:00
Meeden - Zwolle 380 BlackInternal LineD/ND/ND/ND/ND/N

D: Daily (from 07:00 h until 17:00 h) out of service

D/N: Day and Night (from 0:00 h until 24:00 h) out of service

December 2020

Element nameAsset typeBidding zoneWeek 49Week 50Week 51Week 52Week 53
Lelystad - Ens 380 WhiteInternal LineD/ND/N
Westerlee - Maasvlakte 380 WhiteInternal LineD/ND/ND/ND/N
Geertruidenberg - Eindhoven 380 WhiteInternal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Meeden - Zwolle 380 BlackInternal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND
Eemshaven - Meeden 380 BlackInternal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND

D: Daily (from 07:00 h until 17:00 h) out of service

D/N: Day and Night (from 0:00 h until 24:00 h) out of service

January 2021

Element nameAsset TypeBidding zoneWeek 53Week 1Week 2Week 3Week 4

D: Daily (from 07:00 h until 17:00 h) out of service

D/N: Day and Night (from 0:00 h until 24:00 h) out of service


Services in the Netherlands

We are responsible for managing the transmission grid, connecting electricity producers to the grid, transporting electricity  and balancing the electricity supply with demand.

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Services in Germany

TenneT is the driving force behind the Energiewende, the transition to a sustainable energy supply in Germany.

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Security of supply

A secure and continuous supply of electricity is the key objective of our operations.

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