We make clean energy accessible, affordable, and scalable for a sustainable future.
We make clean energy accessible, affordable, and scalable for a sustainable future.
We make clean energy accessible, affordable, and scalable for a sustainable future.
Juri Volodin
CEO and Founder
Juri is the founder and technical architect of the technology. He holds two master’s degrees from the European Wind Energy and Electrical Power Systems program (TU Delft & NTNU).
Fedor Stomakhin
COO and Co-Founder
Fedor holds an MSc in Data Science (cum laude) with 6 years in software & AI. He applies this engineering rigor to Spiral’s operations, financial modeling, and commercial strategy.
Vitali Grozovski
CSO
Vitali is an electrochemist with 20 years of research experience in electrocatalysis and electrode materials + 5 years in industry. He holds two PhDs in Chemistry (University of Alicante and University of Tartu).
Our journey
Our journey
October 2025
Latest prototype
On the picture to the right is the setup for our latest lab-scale prototype.
Latest prototype
On the picture to the right is the setup for our latest lab-scale prototype.
Latest prototype
On the picture to the right is the setup for our latest lab-scale prototype.
September 2025
Joined YES!Delft
Admitted to a competitive deeptech accelerator in the Netherlands. This brings us closer to industrial partners and investors.
Joined YES!Delft
Admitted to a competitive deeptech accelerator in the Netherlands. This brings us closer to industrial partners and investors.
Joined YES!Delft
Admitted to a competitive deeptech accelerator in the Netherlands. This brings us closer to industrial partners and investors.
SMART ENERGY WEEK Tokyo
Showcased our bubble-free centrifugal electrolyzer technology at SMART ENERGY WEEK in Makuhari Messe as part of the European Pavilion and met with prospective partners, investors, and customers from around the world.
SMART ENERGY WEEK Tokyo
Showcased our bubble-free centrifugal electrolyzer technology at SMART ENERGY WEEK in Makuhari Messe as part of the European Pavilion and met with prospective partners, investors, and customers from around the world.
SMART ENERGY WEEK Tokyo
Showcased our bubble-free centrifugal electrolyzer technology at SMART ENERGY WEEK in Makuhari Messe as part of the European Pavilion and met with prospective partners, investors, and customers from around the world.
New Patent Filings
Submitted patent applications for our bipolar plateless stack design (simplifies assembly, reduces system cost) and in-situ catalyst redeposition method (extends electrode lifetime). This was done with the help of a new Innovation Grant awarded by the Estonian Business and Innovation Agency.
New Patent Filings
Submitted patent applications for our bipolar plateless stack design (simplifies assembly, reduces system cost) and in-situ catalyst redeposition method (extends electrode lifetime). This was done with the help of a new Innovation Grant awarded by the Estonian Business and Innovation Agency.
New Patent Filings
Submitted patent applications for our bipolar plateless stack design (simplifies assembly, reduces system cost) and in-situ catalyst redeposition method (extends electrode lifetime). This was done with the help of a new Innovation Grant awarded by the Estonian Business and Innovation Agency.
Baker Hughes Top 15
Selected among the Top 15 in Baker Hughes’ international startup competition, which drew over 120 applications worldwide.
Baker Hughes Top 15
Selected among the Top 15 in Baker Hughes’ international startup competition, which drew over 120 applications worldwide.
Baker Hughes Top 15
Selected among the Top 15 in Baker Hughes’ international startup competition, which drew over 120 applications worldwide.
CEE Summer of Impact Top 8
Chosen as one of the Top 8 startups in the CEE Summer of Impact program, organized by Tilia Impact Ventures. We pitched to 30+ investors and received dedicated mentorship.
CEE Summer of Impact Top 8
Chosen as one of the Top 8 startups in the CEE Summer of Impact program, organized by Tilia Impact Ventures. We pitched to 30+ investors and received dedicated mentorship.
CEE Summer of Impact Top 8
Chosen as one of the Top 8 startups in the CEE Summer of Impact program, organized by Tilia Impact Ventures. We pitched to 30+ investors and received dedicated mentorship.
Creative Destruction Lab Paris
Admitted to the CDL Paris Nurture Program, starting January 2026 — a world-renowned, mentorship-driven accelerator for scaling deeptech ventures.
Creative Destruction Lab Paris
Admitted to the CDL Paris Nurture Program, starting January 2026 — a world-renowned, mentorship-driven accelerator for scaling deeptech ventures.
Creative Destruction Lab Paris
Admitted to the CDL Paris Nurture Program, starting January 2026 — a world-renowned, mentorship-driven accelerator for scaling deeptech ventures.
June 2025
ESA BIC
We are excited to join the European Space Agency's incubation program to continue develping our product and build connections in the space industry.
ESA BIC
We are excited to join the European Space Agency's incubation program to continue develping our product and build connections in the space industry.
ESA BIC
We are excited to join the European Space Agency's incubation program to continue develping our product and build connections in the space industry.
May 2025
Won Prototron
After an engaging 2-month long incubation program, we came first in a competition of over 200 startups.
Won Prototron
After an engaging 2-month long incubation program, we came first in a competition of over 200 startups.
Won Prototron
After an engaging 2-month long incubation program, we came first in a competition of over 200 startups.
April 2025
Entered the Sparkup Incubator
Sparkup Tartu Teaduspark gave us the opportunity to join their incubation program in addition to 10,000€ of development funding.
Entered the Sparkup Incubator
Sparkup Tartu Teaduspark gave us the opportunity to join their incubation program in addition to 10,000€ of development funding.
Entered the Sparkup Incubator
Sparkup Tartu Teaduspark gave us the opportunity to join their incubation program in addition to 10,000€ of development funding.
January 2025
Iterations on our electrolyzer prototype
Over the next months we built the 2nd, 3rd, 4th and 5th prototype.
Iterations on our electrolyzer prototype
Over the next months we built the 2nd, 3rd, 4th and 5th prototype.
Iterations on our electrolyzer prototype
Over the next months we built the 2nd, 3rd, 4th and 5th prototype.
December 2024
Patent filed in the Netherlands
After months of hard work, we filed the patent for our technological breakthrough.
Patent filed in the Netherlands
After months of hard work, we filed the patent for our technological breakthrough.
Patent filed in the Netherlands
After months of hard work, we filed the patent for our technological breakthrough.
TRL 3 & 4: Lab-scale prototype working
First run in the lab. We produced hydrogen and made first measurements on efficiency.
TRL 3 & 4: Lab-scale prototype working
First run in the lab. We produced hydrogen and made first measurements on efficiency.
TRL 3 & 4: Lab-scale prototype working
First run in the lab. We produced hydrogen and made first measurements on efficiency.
November 2024
Innovation Grant
The Estonian Business and Innovation Agency awarded us a grant to cover patenting costs.
Innovation Grant
The Estonian Business and Innovation Agency awarded us a grant to cover patenting costs.
Innovation Grant
The Estonian Business and Innovation Agency awarded us a grant to cover patenting costs.
October 2024
First team off-site at Hydrogen Expo
We visited Hamburg, Germany to learn about the industry and gain valuable contacts.
First team off-site at Hydrogen Expo
We visited Hamburg, Germany to learn about the industry and gain valuable contacts.
First team off-site at Hydrogen Expo
We visited Hamburg, Germany to learn about the industry and gain valuable contacts.
Baltic Impact Accelerator
In partnership with Estonian Cleantech Association, we were granted trainings and support for growth.
Baltic Impact Accelerator
In partnership with Estonian Cleantech Association, we were granted trainings and support for growth.
Baltic Impact Accelerator
In partnership with Estonian Cleantech Association, we were granted trainings and support for growth.
September 2024
TRL 1 & 2: First concepts drafted
TRL 1 & 2: First concepts drafted
TRL 1 & 2: First concepts drafted
Join us!
We move fast and we’re looking for talented people to make the climate revolution a reality.
Join us!
We move fast and we’re looking for talented people to make the climate revolution a reality.
Join us!
We move fast and we’re looking for talented people to make the climate revolution a reality.
Spiral Hydrogen OÜ
Registration number: 16896381
VAT number: EE102792151
Registered address: Õismäe tee 44-44, 13512 Tallinn, Estonia
Office: Tartu, Estonia
© Spiral Hydrogen OÜ 2025, website by Lumela
Spiral Hydrogen OÜ
Registration number: 16896381
VAT number: EE102792151
Registered address: Õismäe tee 44-44, 13512 Tallinn, Estonia
Office: Tartu, Estonia
© Spiral Hydrogen OÜ 2025, website by Lumela