Cases
Topsil Expands in Frederikssund
Dec 16, 2025 Topsil in Frederikssund – owned by the Taiwan-based GlobalWafers – is moving forward with two major expansions of its activities in Denmar, strengthening Danish Production and Advanced Silicon R&D.Topsil is one of the most specialised players in the world when it comes to ultra-pure silicon products, used in everything from wind turbines and energy grids to high-speed trains, frequency converters, medical imaging technologies and quantum technology.
Topsil has long been a strategic partner for Copenhagen Capacity’s aftercare team, which provides ongoing support and assistance for investment and expansion projects in the Greater Copenhagen Region.
Two new expansions on Danish soil
This year, two significant projects have been successfully secured:
- An expansion of Topsil’s existing production of 200 mm silicon ingots in Frederikssund.
- A new R&D activity focused on developing and producing 300 mm silicon ingots.
Both initiatives strengthen Denmark’s position within advanced materials and energy-efficient power electronics, and they are expected to increase the company’s local footprint significantly.
Supporting strong Danish competitiveness
Copenhagen Capacity has played a key role in reinforcing Topsil’s Danish business case. For the production expansion, CopCap delivered detailed cost comparisons between operating in Frederikssund and Milan, where GlobalWafers also has facilities. These analyses helped demonstrate the advantages of placing the growth in Denmark.
For the R&D expansion, Copenhagen Capacity supported Topsil by highlighting the need for national funding to political decision-makers, including Minister for Industry Morten Bødskov, as well as through commentary in the business daily Børsen. CopCap also contributed to Topsil’s EUDP application by providing argumentation and documentation.
Funding secured for future silicon technology
Topsil has now received DKK 44 million in support from The Danish Energy Agency’s EUDP scheme (Energy Technology Development and Demonstration Programme) for its R&D efforts to develop the new 300 mm silicon ingots – a technology expected to play a key role in future energy infrastructure and power electronics.
The expansions reinforce Topsil’s presence in Frederikssund and mark another success in attracting and retaining high-tech investments in the Greater Copenhagen Region.
