TenneT TSO
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| Government-owned limited liability company (BV) | |
| Industry | Electricity |
| Founded | 1998 |
| Headquarters | Arnhem, Netherlands |
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Number of locations
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435 (Substations) |
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Area served
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Netherlands Germany |
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Key people
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J.M. Kroon CEO |
| Services | Electric power transmission |
| Revenue | € 1,525 million (2011) |
| Total assets | € 8,569.8 million (2011) |
| Owner | Dutch Ministry of Finance |
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Number of employees
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1,985 (2011) |
| Subsidiaries |
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| Website | www |
| TenneT grid maps, March 2017 | |
 Archive of TenneT grid map, small
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NL grid map (5 MB) |
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DE grid map (6 MB) |
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NL+DE grid map (7 MB) Archive
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TenneT B.V. is the national electricity transmission system operator of the Netherlands, headquartered in Arnhem. Controlled and owned by the Dutch government, it is responsible for overseeing the operation of the 380 and 220 kV high-voltage grid throughout the Netherlands and its interconnections with neighbouring countries. It is additionally responsible for the 150 kV grid in South Holland. In Germany, it is one of the four transmission system operators operating through its subsidiary TenneT TSO GmbH.
As of 2006, it operates 3,286 km of lines and cables at 150 kV and above, connecting at 51 high-voltage substations. Peak demand for 2006 was 14,846 MW. The sole shareholder is the Dutch Ministry of Finance.
TenneT was formed in 1998 when the Dutch electricity industry was liberalised, and was incorporated as a business in 2001 with the passing of the Electricity Production Sector Transition Act. Its statutory tasks included management of the national transmission grid and maintaining the balance between electrical supply and demand. In 2003, it acquired the regional system operator Transportnet Zuid-Holland.
TenneT moved beyond these regulated businesses in 2004 when it entered the gas market by acquiring EnergieKeuze, an online gas and power contract exchange market. In 2005 TenneT further expanded its operations when, together with the Belgian and French TSOs Elia and RTE and the APX and Powernext power exchanges, it formed the Belgian Power Exchange Belpex. This granted it a right to participate in the Belgian electricity market.
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