Hydro's corporate head office is located at Vækerø on Oslo's west side, beside the Oslo fjord.

Hydro has established a regional administrative center for its activities in Pará state located in Belém, the state capital.

The Vigelandsfoss power plant is located in the Otra River in Vennesla Municipality. The plant uses a water drop of 19.5 meters in the river, which is dammed up beside the plant.

The power plants in Telemark are Hydro's oldest. Svelgfoss was first launched in 1907 and was then Europe's largest and the world's second largest power plant. Our power plants in Telemark consist of Frøystul, Vemork, Såheim, Moflåt, Mæl and Svelgfoss.

Hydro's power system in Sogn consists of the six hydroelectric power stations at Tyin and Fortun; Fivlemyr, Herva, Holsbru, Mannsberg, Skagen and Tyin.

Hydro's power system in Røldal-Suldal consists of reservoirs and seven hydroelectric power stations along the Røldal and Suldal watershed and terminating at Suldal Lake

In the Stavanger region, Hydro is the operator of the 14 power plants Lysebotn 2, Lysebotn 1, Tjodan, Flørli, Maudal, Breiava, Oltedal, Oltesvik, Hjelmeland, Sviland, Hetland, Hauskje, Jørpeland and Dalen.