2011: The activities regarding global service and support of the NOHAB engine range is consolidated to Wärtsilä Finland.
2009: Wärtsilä's Stockholm office moves to new premises on the venerable Beckholmen.
2007: Wärtsilä Sweden AB buys the Swedish environmental technology company Senitec AB.
2006: Wärtsilä Sweden expands services on the east coast through the purchase of Stockholm Ship repair. Operations in the Baltic countries increased by a joint venture company in Klaipeda, Lithuania.
2005: Wärtsilä Sweden enters into cooperation with a repair yard in Tallinn, Estonia. The joint venture company Wärtsilä BLRT Baltica is formed.
2004: Operations in Trollhättan and Gothenburg merge and move to common premises in Lindholmen in Gothenburg.
2001: Wärtsilä Sweden begins a new phase of expansion with the purchase of Ciserv AB in Göteborg, enabling access to new customers and markets.
1999: Engine production in Trollhättan ceases and Wärtsilä’s Swedish operations are transformed into a service company. The company changes its name and becomes Wärtsilä Sweden AB.
1994: The WN25 engine is converted to gas operation. The first Wärtsilä gas engine is introduced under the name Wärtsilä 25SG.
1987: Wärtsilä 25 engine is introduced on the market.
1986: Wärtsilä Diesel acquires Lindholmen Motor, which is renamed to Wärtsilä Diesel Göteborg, with responsibility for the Swedish market.
1980: Wärtsilä Diesel acquires Nohab, which becomes part of the global Wärtsilä Group.
1926: The first diesel engine is built, using technology from Atlas Diesel.
1920: Nohab gets the biggest order of all categories in Sweden: 1000 steam trains to Russia. The payment was made in the form of 56 tonnes of pure gold.
1865: The first steam locomotive was built for Uddevalla-Vänersborg-Herrljunga railway.
1850: The company changes its name to NOHAB (Nydqvist och Holm Aktiebolag).
During the later half of the 1800’s the company expanded its production to include steam engines, railway carriages and locomobiles.
1847: Trollhättans Mekaniska Verkstad is founded by Johan Magnus Lidström, Johan Henrik Antenor Nydqvist och Carl Olof Holm. The company idea was the production of water turbines.