Aurland Hydroelectric Power Station, Norway Overview


Aurland Hydroelectric Power Station,  Norway

Aurland Hydroelectric Power Station: A Norwegian Powerhouse

The Aurland Power Station (Norwegian: Aurland kraftverk) is a large hydroelectric power station located in the municipality of Aurland in Vestland, Norway. It is owned and operated by the energy company E-CO Energi.

Towering amidst the scenic landscapes of Aurland, Norway, lies the impressive Aurland Hydroelectric Power Station. Owned by E-CO Energi, it's a marvel of engineering, generating clean and reliable electricity for the nation.

This behemoth isn't one facility, but five: Aurland I, II, III, Reppa, and Vangen, standing together to boast a combined capacity of 1,128 megawatts, enough to illuminate and power roughly 280,000 Norwegian homes. Its annual production, a staggering 2,869 gigawatt-hours, speaks volumes about its contribution to the nation's energy needs.

The story of Aurland began in 1969, with the construction of Aurland I. Over the next few decades, its siblings rose, each contributing to the power station's ever-growing might. To harness the might of the Aurland River and nearby waterways, a network of dams and tunnels was meticulously crafted. The crown jewel of this system is the 132-meter-tall Vangen Dam, a testament to human ingenuity. Water channeled through this network then spins turbines, transforming the river's flow into powerful electricity.

While undeniably a clean energy source compared to fossil fuel-powered alternatives, the station's construction wasn't without environmental impact. Dams and tunnels inevitably reshape landscapes, and some wildlife and vegetation were displaced. However, E-CO Energi, committed to responsible practices, actively works to minimize such impacts and restore affected habitats.

Aurland's significance extends beyond powering homes. It's a crucial artery in Norway's electricity grid, ensuring stability and reliability. It also fuels the local economy, generating jobs and contributing to the well-being of the surrounding communities.

For many, Aurland is more than just a power station; it's a tourist destination. Engineering enthusiasts marvel at its intricate workings, while others simply soak in the awe-inspiring landscapes that surround it. Guided tours offer fascinating insights into its operation, making it a unique and educational experience.

Aurland Hydroelectric Power Station,  Norway

Statistics data Aurland Hydroelectric Power Station

Aurland Hydroelectric Power Station: Stats at a Glance


  • Combined installed capacity: 1,128 megawatts (MW)
  • Individual facility capacities:
    • Aurland I: 234 MW
    • Aurland II: 398 MW
    • Aurland III: 300 MW
    • Reppa: 120 MW
    • Vangen: 76 MW


  • Average annual production: 2,869 gigawatt-hours (GWh)
  • Enough to power approximately 280,000 Norwegian households


  • Dams:
    • Vangen Dam: 132 meters tall, largest in the system
  • Tunnels:
    • Aurland II tunnel: 12.7 kilometers long, longest in the system
  • Water sources: Aurland River and other nearby waterways


  • Relatively clean energy source compared to fossil fuels
  • Some environmental impact from dam and tunnel construction (habitat displacement)
  • E-CO Energi committed to minimizing impact and restoring affected habitats


  • Important part of Norway's electricity grid
  • Provides jobs and contributes to the local economy


  • Popular tourist destination for engineering and renewable energy enthusiasts
  • Guided tours available

Additional Statistics:

  • Construction began: 1969
  • First facility operational: 1973 (Aurland I)
  • Owner and operator: E-CO Energi
Aurland Hydroelectric Power Station,  Norway

Aurland Hydroelectric Power Station Statistics

Combined Installed Capacity1,128 MW
Individual Facility Capacities
* Aurland I234 MW
* Aurland II398 MW
* Aurland III300 MW
* Reppa120 MW
* Vangen76 MW
Average Annual Production2,869 GWh
Equivalent Number of Powered Households280,000
Largest Dam: Vangen Dam132 meters
Longest Tunnel: Aurland II Tunnel12.7 kilometers
Construction Start Year1969
First Facility Operational (Aurland I)1973
Owner and OperatorE-CO Energi
Aurland Hydroelectric Power Station,  Norway

Aurland Hydroelectric Power Station Technology

The Aurland Hydroelectric Power Station utilizes a range of technologies to harness the power of water and convert it into clean electricity. Here's a breakdown of the key features:

Water Diversion and Flow:

  • Dam System: A network of dams, including the impressive Vangen Dam, captures and regulates water flow from the Aurland River and other nearby waterways.
  • Tunnels: Extensive tunnel systems, like the 12.7 km Aurland II tunnel, channel water towards the power stations, maximizing head (water pressure) for power generation.

Power Generation:

  • Turbines: The station houses various types of turbines, including Francis and Pelton turbines, chosen based on water flow and head characteristics. These turbines convert the kinetic energy of flowing water into mechanical energy.
  • Generators: Coupled with the turbines are synchronous generators that transform the mechanical energy into electrical energy. The voltage is then stepped up (increased) for transmission through the national grid.

Control and Monitoring:

  • Control Systems: Sophisticated computer systems regulate water flow, turbine operation, and electricity generation, ensuring efficiency and stability.
  • Monitoring Systems: Comprehensive monitoring systems track water levels, pressure, temperature, and other vital parameters to optimize performance and detect potential issues.

Additional Technologies:

  • Surge chambers: These act as pressure buffers, cushioning the impact of sudden changes in water flow and protecting equipment.
  • Penstocks: Large-diameter pipes channel water towards the turbines under high pressure, maximizing energy transfer.
  • Transformers: Located at each facility, transformers adjust the voltage level of the generated electricity for efficient transmission within the grid.

Evolution and Upgrades:

The Aurland Power Station has undergone several upgrades and modernization efforts over the years. These advancements include:

  • Improved turbine efficiency: Upgrades to turbine blades and control systems have resulted in increased electricity production from the same water flow.
  • Automated systems: Integration of advanced automation and data analysis enhances operational efficiency and reduces reliance on manual interventions.
  • Environmental mitigation: Investments in fish ladders and habitat restoration projects minimize the environmental impact of the power station's operations.

By continuously adopting and integrating cutting-edge technologies, the Aurland Hydroelectric Power Station maintains its position as a reliable and efficient source of clean energy for Norway.

Previous Post Next Post