Reserve power plants

Reserve power plants are fenced off and may only be accessed by authorised people. The reserve power plants undergo a trial startup every six weeks, and they are occasionally started up in the event of a disturbance in the main grid. The power plant makes more noise than normal during start-up. Clanking sounds may be heard when the grid’s switching state changes.

Reserve power plant maintenance

The condition of reserve power plants is monitored through maintenance tours of the plant, operational control and video surveillance systems. Every year, reserve power plants undergo several different technical, environmental and safety-related inspections. A security guard firm monitors the plant.

Reserve power plants are maintained by service providers. Maintenance includes preventive maintenance and inspections, fault repairs, and smaller maintenance projects. The annual maintenance of reserve power plants takes about a week and requires a planned transmission outage.

The locations of reserve power plants are shown on our website.