Beginning his career in the 1990s, Carlstrom managed real-estate investments exceeding €1 billion across Scandinavia, the United Kingdom, France, the Netherlands, Serbia and Croatia.
In 1999, he founded V2H (Video to Home), a video-on-demand service developed in collaboration with Warner Bros., Hearst and Nordisk Film, anticipating the evolution of digital entertainment and on-demand media.
During the 2000s, Carlstrom became involved in the transformation of the European automotive industry, including initiatives connected with Saab Automobile and industrial projects involving FCA, General Motors and Volvo.
He subsequently founded Britishvolt in the United Kingdom and Italvolt in Italy, pursuing ambitious plans to establish large-scale battery manufacturing capacity in Europe. He later founded Statevolt in the United States, extending his work into battery manufacturing and energy storage.
Today, his focus includes Statevolt and Statetron New Energy Holdings AB (publ), with projects spanning battery technology, grid-scale battery energy storage systems and industrial development. Through Statetron, this work extends into the Middle East, with Qatar a central focus for plans involving energy storage, advanced manufacturing and regional industrial development.
In 2025, Carlstrom acquired Westline through Dynaroc Group AB, taking on the challenge of revitalising a Scandinavian yacht brand and returning it to the market with renewed ambition.
He is also involved in the next chapter of Thrupp & Maberly, the historic British coachbuilder, through a partnership with Brendan O'Toole.
Across these ventures, Carlstrom's broader ambition is to connect industrial innovation with energy infrastructure and economic development, helping build the capabilities required for a more electrified and energy-resilient global economy.
His professional journey reflects a sustained interest in identifying emerging opportunities, developing industrial platforms and advancing technologies with the potential to reshape established industries.