Of Skellefteå Kraft's total of 11 hydropower plants in the Skellefteälven river, Rengård is the one with the least capacity today.

After renovation and new construction, it will go from an output of 35 MW to 70 MW and will therefore be the largest hydropower plant.

- The investment is a must to increase the ability to regulate, comments the power company's business unit manager for hydropower, Susanne Öhrvall.

It is thus a matter of being able to control electricity production faster and better when the electricity system as a whole becomes increasingly dependent on wind and solar, types of power that do not deliver with the same continuity.

- When it is ready, the river contributes to an even greater extent to the electrification of society, she says.

In May, the existing power plant was stopped, at the beginning of next year it will be up and running again.

However, the new turbine will not be commissioned until the end of 2023.

The total cost of the investment is estimated at SEK 900 million.

Right now, about 100 people are working on site in Rengård.