Frequently Asked Questions - Transmission and system services.

TenneT communicates with parties that can help maintain a balance between the supply of and demand for power. These are the so?called ‘parties with programme responsibility’, which can produce more or less power upon TenneT’s request. In the event of a ‘not?normal situation’ in the grid or system or if maintenance work is being performed, the emergency capacity can be deployed or a request can be made for extra regulating and reserve capacity.

Further information: 'Operational management/Operational reports'.

TenneT facilitates transmissions across the national high-voltage grid in response to market demand and supply. To achieve this, TenneT has reached agreements with the Dutch regional grid administrators and grid administrators in neighbouring countries to ensure that the transmission of electricity proceeds smoothly. The following criteria are important in relation to transmission services: quality, continuity of service and transparency towards the market.

Further information: 'Transmission- en system services/Ttransmission services'.

TenneT maintains the balance between the supply of and demand for electricity. We achieve this by deploying regulating and reserve capacity and incidental emergency capacity (reserve capacity contracted exclusively to TenneT). In practice, there is almost always a slight imbalance between supply and demand on the electricity grid.

Further information: 'Transmission and system services/System services'.

Parties connected to the electricity grid may enter into contractual purchase and sales relationships. Within the scope of these contracts they can make daily performance arrangements. TenneT has developed a system for measuring the daily quantities and settling the costs if the power production is not equal to the consumption. In this context, TenneT has authorised a number of parties to act as parties with programme responsibility.

Further information: 'Transmission and system services/System services/Programme responsibility'.

TenneT has authorised a number of parties to act as ‘parties with metering responsibility’. They measure the electricity consumption and perform work on electricity meters which comply with the statutory requirements. A similar method is used by parties with metering responsibility which have been authorised to deal with gas consumers.

Further information: 'Transmission and system services/System services/Metering responsibility' and the website of the Office of Energy Regulation.

TenneT has drawn up a procedure by which an organisation can be authorised to perform the activities concerned. Interested parties can contact the Service Centre for this purpose. Our staff there will be able to provide more information.

For further information please contact the TenneT Service Centre.

On 1 January 2008, national grid operator TenneT was made legally responsible for managing all high-voltage grids of 110 kilovolts (kV) or higher. This means that the regional grid operators are transferring their management activities and customer contacts for these grids to TenneT.

Until 1 January, TenneT was the administrator of all high-voltage connections with a voltage level of 220 kV or higher. In accordance with the new Independent Grid Administration Act, energy companies have to transfer administration of their high-voltage grids of 110 kV and higher to national grid operator TenneT. Placing all grids with a voltage level of 110 kV or more under the management of a single independent party allows for more targeted investments in a robust and safe national grid.