Key figures

TenneT manages hundreds of kilometres of high‑voltage lines and cables and dozens of substations. Our employees work hard to safeguard the continuity of the electricity supply in the Netherlands – 24 hours a day, 7 days a week. This page provides some key figures about TenneT and its activities.

Overview of technical data for 2007

In 2006 TenneT was responsible for:

• 2,031 kilometres of 380 kV high-voltage lines and cables
• 653 kilometres of 220 kV high-voltage lines and cables

• 532 kilometres of 150 kV high-voltage lines and cables 
  
  

• 20 substations for 380 kV electricity transmission 

• 12 substations for 220 kV electricity transmission 
  19 substations for 150 kV electricity transmission   
  
  

• 23,139 gigawatt-hours of imported energy
• 5,565 gigawatt-hours of exported energy        

Peak load in 2007

When people all over the Netherlands turn up their heating and switch on all the lights, a large amount of electricity is consumed. This so‑called 'peak load moment' usually occurs in December. Peaks in electricity consumption can also be observed during important sports events, for instance at half‑time during football matches. In 2007 the peak load moment occurred on:

• Date: 20 december 2007 
• Time: 5.00 p.m. 
• Number of MW:14,825       

Overview of company data for 2007

• Employees: 516 
• Turnover: 398,8 million