greenteg raises CHF 10 million to expand global reach and boost R&D of heat-flux sensors
22.12.2022
The award-winning ETH spinoff develops, manufactures, and markets thermal sensors. The financing secured in a recent round will be invested in R&D and production scaling. The company also welcomes three new board members. greenteg is a Venture Kick and Venture Leaders alumnus and ranked among the TOP 100 Swiss Startups several years in a row.
![]() greenteg's CORE heat-flux tech powers world records
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Founded in 2009, greenteg focuses on the development, manufacturing, and global sales of heat-flux sensors for applications ranging from photonics, building insulation, and battery characterization to core body temperature measurement in the form factor of wearables.
CORE, its Performance Sports Wearable brand launched in 2020 and that has since received significant recognition, made headlines this year when it was used by the 1st and 3rd ranked 2022 Ironman Hawaii winners as well as by cyclist Filippo Ganna who broke the UCI hour record. greenteg also received 3 CES Innovation Awards in 2022 for CORE Body Temperature monitor in Health & Wellness, Sport & Fitness Wearable Technologies.

Gustav Iden at the Ironman World Championship in Kona in October 2022, wearing greenteg's CORE wearable
Existing and new investors have invested a total of CHF 10 million to accelerate the global expansion of greenteg's business. With the proceeds from this round, greenteg will not only invest in R&D for medical applications in the wearable market but also in scaling its production capacity in Rümlang, Zurich, by a factor of 10 in 2023.
In the coming years, greenteg plans to ship tens of millions of its unique heat-flux sensors to wearable customers around the globe. At this strategically important growth stage greenteg also gained three new Board Members with Gilbert Achermann, Peter Germann, and Felix Haldner. They bring decades of relevant entrepreneurial and industry experience to the team and have scaled companies to global leaders in the past.
Wulf Glatz, greenteg's Co-founder and CEO, is enthusiastic about the company's quantum leap: "Over the past year, we have seen a tremendous increase of interest in our Calera solution for non-invasive and continuous monitoring of core body temperature. Solution providers for work safety as well as manufacturers of medical and consumer wearables have been desperately looking for a viable solution. We enable healthcare professionals, patients, and workers with an easy-to-use and safe experience in monitoring this important vital parameter. We are extremely happy to have attracted renowned experts in our target markets as new investors and Board Members."
greenteg participated in Venture Kick in 2009, winning CHF 30,000 to boost the development of their technology, and was also voted a TOP Swiss Startup from 2011 to 2013. The company's CEO, Wulf Glatz, participated in Venture Leaders China in 2014 and Venture Leaders Mobile in 2019, expanding the company's global presence and network of investors. The company also joined Venturelab's extended delegation at last year's 4YFN at the World Mobile Congress in Barcelona.

greenteg CEO Wulf Glatz ahead of the Venture Leaders Mobile roadshow in 2019
CORE, its Performance Sports Wearable brand launched in 2020 and that has since received significant recognition, made headlines this year when it was used by the 1st and 3rd ranked 2022 Ironman Hawaii winners as well as by cyclist Filippo Ganna who broke the UCI hour record. greenteg also received 3 CES Innovation Awards in 2022 for CORE Body Temperature monitor in Health & Wellness, Sport & Fitness Wearable Technologies.

Gustav Iden at the Ironman World Championship in Kona in October 2022, wearing greenteg's CORE wearable
Existing and new investors have invested a total of CHF 10 million to accelerate the global expansion of greenteg's business. With the proceeds from this round, greenteg will not only invest in R&D for medical applications in the wearable market but also in scaling its production capacity in Rümlang, Zurich, by a factor of 10 in 2023.
In the coming years, greenteg plans to ship tens of millions of its unique heat-flux sensors to wearable customers around the globe. At this strategically important growth stage greenteg also gained three new Board Members with Gilbert Achermann, Peter Germann, and Felix Haldner. They bring decades of relevant entrepreneurial and industry experience to the team and have scaled companies to global leaders in the past.
Wulf Glatz, greenteg's Co-founder and CEO, is enthusiastic about the company's quantum leap: "Over the past year, we have seen a tremendous increase of interest in our Calera solution for non-invasive and continuous monitoring of core body temperature. Solution providers for work safety as well as manufacturers of medical and consumer wearables have been desperately looking for a viable solution. We enable healthcare professionals, patients, and workers with an easy-to-use and safe experience in monitoring this important vital parameter. We are extremely happy to have attracted renowned experts in our target markets as new investors and Board Members."
greenteg participated in Venture Kick in 2009, winning CHF 30,000 to boost the development of their technology, and was also voted a TOP Swiss Startup from 2011 to 2013. The company's CEO, Wulf Glatz, participated in Venture Leaders China in 2014 and Venture Leaders Mobile in 2019, expanding the company's global presence and network of investors. The company also joined Venturelab's extended delegation at last year's 4YFN at the World Mobile Congress in Barcelona.

greenteg CEO Wulf Glatz ahead of the Venture Leaders Mobile roadshow in 2019