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 24,500 kilometres of high-voltage lines, we cross borders and connect countries.

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Offshore Outlook 2050

Already by 2030, the originally planned capacity of 15 gigawatts of offshore wind energy will increase to 20 GW.

To Offshore Outlook 2050
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. 

To transparency pages

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 June 7, 2022

June 2022

Element nameVoltage LevelAsset TypeBidding zoneWeek 22Week 23Week 24Week 25Week 26
Zwolle - Meeden White380Internal LineDDD
Diemen - Lelystad White380Internal LineNN
Diemen - Lelystad  Black380Internal LineNN
Oostzaan - Diemen Grey380Internal LineD
Krimpen a/d IJssel - Geertruidenberg White380Internal LineD/ND/N
Krimpen a/d IJssel - Geertruidenberg Black380Internal LineD/ND/N
Krimpen a/d IJssel - Oostzaan Black380Internal LineD/ND/ND/ND/ND/ND/ND/N
Maasvlakte - Simonshaven White380Internal LineD/ND/ND/ND/ND/N
Simonshaven - Crayestein White380Internal LineD/ND/ND/ND/ND/N
Geertruidenberg - Eindhoven Grey380Internal LineD/ND/N
Geertruidenberg - Eindhoven White380Internal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Geertruidenberg - Eindhoven Black380Internal LineD/ND/ND/ND/ND/ND/N
Hengelo - Gronau White380Tie LineDED/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Hengelo - Gronau Black380Tie LineDED/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N

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

N: Night (from 17:00 h unit 07:00 h) out of service

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

July 2022

Element nameVoltage levelAsset typeBidding zoneWeek 26Week 27Week 28Week 29Week 30
Oostzaan - Diemen Grey380Internal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Krimpen a/d IJssel - Oostzaan Black380Internal 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/ND/N
Crayestein - Krimpen a/d IJssel White380Internal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Crayestein - Krimpen a/d IJssel Black380Internal LineD/ND/N
Geertruidenberg - Eindhoven Black380Internal LineD/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/N
Maasbracht - Oberzier White380Cross border LineDED/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
Maasbrackt - Siersdorf Black380Cross border LineDED/N
Hengelo - Gronau White380Cross border LineDED/ND/ND/ND/ND/ND/ND/ND/N
Riland - Zandvliet Grey380Cross border LineBED/ND/ND/ND/ND/ND/ND/ND/ND/ND/ND/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


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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