In 2004 Ensto was divided to three separate business areas: Ensto Building Technology, Ensto Utility Networks and Ensto Enclosures and Components.
The year 2001 saw some things come to an end and many others begin at Ensto. Ensio Miettinen transferred all the authority and responsibility of ownership to the next generation.
Presence in France and Spain became stronger with the help of a new acquisition. Companies were founded in Ukraine, Kazakhstan, Lithuania and Germany and new production plants opened in Poland and Russia.
In 2008, Ensto celebrated its 50th anniversary with the theme Ensto Performance 50+. The last quarter of 2008 was also a year of a sudden economic downturn.
In 2009, Ensto sold its share of electric installation equipment and accessory manufacturer Ensto Busch-Jaeger to power and automation technology provider ABB, with whom Ensto had a joint venture since the year 1980.
Later that year, Ensto strengthened its capabilities in plastic compression by acquiring Estonian-based Imco, and later in energy efficiency by acquiring Porvoo-based ventilation and heat recovery equipment manufacturer Enervent, who's CEO Timo Luukkainen became Ensto's CEO. With this, a new era of energy efficiency and sustainability began. The company's new customer promise, "Ensto Saves Your Energy" was launched.