About Flisom
Flisom is a Technology company based in Zurich (Switzerland) founded in 2005, and was acquired by Ascent Solar in April 2023. CIGS thin-film photovoltaics are manufactured via roll-to-roll processes. It operates in the Technology and Energy & Utilities sectors. Flisom has raised $58.53 million across 11 funding rounds from investors including Tata, European Union and Ascent Solar. The company was acqui-hired. Its focus areas include Energy Tech, Renewable Energy Tech, Solar Energy and Solar Modules.
Company details
Flisom was founded in 2005 as a spin-off from the Laboratory of Solid State Physics at the Swiss Federal Institute of Technology Zurich. CIGS thin-film solar cells are produced using a proprietary roll-to-roll fabrication method, which enables monolithic integration and supports cost-effective mass production. Operations are conducted in the photovoltaics sector from Zurich, Switzerland.
- Headquarters Zurich, Switzerland
- Stage Acquired
- SectorsTechnologyEnergy & Utilities
- Emailβ’β’β’β’β’β’β’β’
- Website flisom.com
- Social LinkedIn
- Acquired by Ascent Solar (Apr 2023)
- Total Equity Funding$58.53M (USD)
in 11 rounds
- Latest Funding Round$692.79K (USD), Grant
Oct 2018
- InvestorsTata
& 3 more
- Acquired by
Funding Insights of Flisom
Flisom has successfully raised a total of $58.53M across 11 strategic funding rounds. The most recent funding activity was a Grant round of $692.79 thousand completed in October 2018. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $58.53M
- Total Rounds 11
- Last Round Grant β $692,787
- Investors Count 2
Latest 10 of 11 funding rounds of Flisom with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Oct 2018 | $692,787 | Grant | β | β | β |
| May 2018 | $479,502 | Grant | β | β | β |
| Jan 2018 | $715,442 | Grant | β | β | |
| Jan 2018 | $480,982 | Grant | β | β | |
| Jan 2016 | Grant | β | β | ||
| Jun 2015 | $10.66M | Series D | β | β | |
| May 2015 | Grant | β | β | ||
| Jan 2015 | Grant | β | β | ||
| Dec 2013 | $47.87M | Series C | β | β | |
| Nov 2013 | Grant | β | β |
4 investors in total: 4 institutional.
Investors in Flisom
Flisom has secured backing from 4 investors, including institutional investors. Prominent investors backing the company include Tata, European Union and Ascent Solar.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Government entites focused on freedom, democracy, equality and the rule of law, promoting peace and stability | 1958 | europa.eu | Brussels, Belgium | |
Multiple industries are operated in by the diversified Tata conglomerate. | 1868 | tata.com | Mumbai, India | |
Integrated telecom and TV services are provided in Liechtenstein. | 1999 | fl1.li | Vaduz, Liechtenstein | |
Thin-film CIGS solar modules manufacturer | 2005 | ascentsolar.com | Thornton, United States |
Investor details for Flisom
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
Timeline of Flisom
5 dated milestones of Flisom across 18 years, from founding to its latest funding, stage changes and deals.
- Founded Flisom is founded.
- Funding First funding round.
- Funding Latest funding round, Grant, of $693K.
- Exit Acquired by FL1.
- Exit Acquired by Ascent Solar.
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Frequently Asked Questions about Flisom
Flisom was founded in 2005 and raised its 1st funding round 4 years after it was founded.
Flisom is headquartered in Zurich, Switzerland.
Flisom is a funded company, having raised a total of $58.53M across 11 funding rounds to date.
Flisom was founded in 2005 as a spin-off from the Laboratory of Solid State Physics at the Swiss Federal Institute of Technology Zurich. CIGS thin-film solar cells are produced using a proprietary roll-to-roll fabrication method, which enables monolithic integration and supports cost-effective mass production. Operations are conducted in the photovoltaics sector from Zurich, Switzerland.
Flisom has 4 investors. Key investors include Tata, European Union, Ascent Solar, and FL1.
Yes. Flisom was acquired by Ascent Solar in April 2023.

