Will Norway's largest pumped storage power plant improve energy supply?

The Norwegian energy company Statkraft has contracted AFRY to conduct a feasibility study on optimising the operation of Norway’s largest pumped storage power plant in Saurdal. The study aims to double the plant’s capacity to store surplus renewable energy, thereby enhancing consistent energy supply during peak demand periods.

How much power does Norway produce a year?

In a normal year, the Norwegian power plants produce about 156 TWh. In 2021, Norway set a new production record with a total power production of 157.1 TWh. In 2022, there was low levels of water inflow to the reservoirs, and the total power production was 146.1 TWh.

How many hydropower reservoirs are there in Norway?

Norway has more than 1240 hydropower storage reservoirs with a total capacity of 87 TWh. The 30 largest reservoirs provide about half the storage capacity. Total reservoir capacity corresponds to 70% of annual Norwegian electricity consumption. Most of the reservoirs were constructed before 1990.

How many thermal power plants are there in Norway?

There are 30 thermal power plants in Norway, with a total installed capacity of about 642 MW. The power balance expresses the relationship between production and consumption and indicates whether the Norwegian power system is a net exporter or importer in a particular year.

How long does a reservoir last in Norway?

Norway’s largest reservoir, Blåsjø, has a capacity of 7.8 TWh and can hold three years’ normal inflow. However, when the hydropower plants are working at full capacity, the reservoir could be emptied in 7–8 months.

How do power plants in Norway work?

Many power plants in Norway have storage reservoirs and production can therefore be adjusted within the constraints set by the licence and the watercourse itself. Wind and solar power are intermittent; electricity can only be generated when the energy is available.