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Having passed well over the bridge across to Sotra you pass an industrial plant surrounded by a budding community; the mineral mill of A/S Norwegian Talc. Some of the buildings seem to have been erected in the early part of the 20th century. They are remnants of a grand industrial plant from the former boom time in the country – the economic upswing after WWI.
As early as 1862 Svein L.Røsseland started a country store and lodging house at Ytre Tysse, and later on he became steamship agent and the first post office manager in Samnanger. However, the decisive change came when F.Mathiessen started A/S Samnanger Uldvarfabrik (woollen factory) in 1886.
The large coastal waves that crash down on the islands west in the sea gather their energy from storms and winds all the way out in the North Atlantic Ocean. The most common place of origin is nonetheless the North Sea. When these waves break over the skerries and islets along the shore, or on the rocky outermost islands, their energy is released. This takes the form of turbulence in the water and sea spray up on land. Can the enormous energy contained in the waves be exploited?
Much rain, a steep drop and nearness to Bergen meant that the power-making potential of the Samnanger water system was exploited early. Samnanger was thus one of the first power-producing municipalities in western Norway. With its subsequent expansion and new power stations, about 400 gigawatts of electricity per hour were produced on average each year. This is enough to meet the energy needs of 25,000 households.
Alvøen is one of the oldest industrial places in Norway. As early as the 1620s a gunpowder mill was built here. The place itself was well situated for industrial activity, lying only 100 m from the waterfall, which provided power for the mill, and a good harbour wherefrom the products were shipped. The success of the gun-powder mill varied in the 1600s and 1700s, but what made Alvøen best known was its paper production.