HySun
HySun is a Spanish deep-tech company developing modular, off-grid hydrogen production systems using a proprietary Metal Molecules catalyst combined with concentrated solar thermal technology to convert water and sunlight directly into renewable hydrogen, targeting heavy industry decarbonization and remote energy applications.
- Company typePrivate
- Founded2022
- HeadquartersMadrid, Spain
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What HySun does
HySun (legal name POWER2HYDROGEN, also branded H2HYSUN) is a Spanish green hydrogen technology company founded in November 2022 as a joint venture between NANOGAP, a materials science firm that developed the proprietary Metal Molecules (M-M) catalyst, and TEWER Engineering, a Spanish engineering company specializing in concentrated solar power systems. The company is headquartered in Madrid with an R&D office in Milladoiro, A Coruña, and operates with 1-10 employees.
HySun's core offering, branded as the Hyloop solution, is a modular hydrogen production system based on a photo-thermo-catalytic process that combines the sub-nanometer M-M catalyst with Concentrated Solar Thermal (CST) technology to convert water and sunlight directly into hydrogen without intermediate electricity generation or gas separation. The process operates in two steps — first producing oxygen vacancies in the catalyst using water vapor at mild temperature, then generating pure H₂ — and is claimed to achieve over 40% Solar-to-Hydrogen (STH) efficiency, with hydrogen production costs of $3/kg for 45 t/year plants and below $2/kg for plants producing more than 9,000 t/year. Plants are designed to operate off-grid with no electricity dependency, and three modular designs are documented (50, 790, and 9,000+ t/year capacity). The technology originated in the EU Horizon 2020 BacToFuel project (2019-2022) and was further developed under Spain's Misiones program; EU and PCT patent applications for the hydrogen production unit were filed in October 2021 and October 2022 respectively, both still pending. A first industrial prototype was installed at CIEMAT's Plataforma Solar de Almería, Europe's largest concentrated solar research center, in October 2024. Current TRL is 4-5.
HySun generates revenue through two streams: hardware sales of M-M/CST hydrogen production plants and technology licensing for industrialization and scaling. Pricing follows a unit-pricing model based on plant capacity. The go-to-market is enterprise-focused, targeting heavy industry decarbonization as the primary use case, with secondary applications in transport and mobility and off-grid/remote energy production. Distribution is via direct enterprise sales with engineering support from TEWER. The company raised €3 million in October 2025 from Equinor Ventures and Axon Partners Group alongside InnoEnergy, NANOGAP, and TEWER. As of the most recent disclosure, HySun is pre-revenue with no commercial customers and remains at prototype validation stage.
HySun firmographics
Firmographics- Name
- HySun
- Legal name
- POWER2HYDROGEN (H2HYSUN)
- Website
- https://h2hysun.com
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- HySun is a Spanish deep-tech company developing modular, off-grid hydrogen production systems using a proprietary Metal Molecules catalyst combined with concentrated solar thermal technology to convert water and sunlight directly into renewable hydrogen, targeting heavy industry decarbonization and remote energy applications.
- Ownership category
- akta.pro rank
HySun industry classification
Industry- Product category
- Green Hydrogen Production Systems
- akta.pro primary industry
- Hydrogen (Industrial & Mobility) (IMAEACAB)
- akta.pro secondary industries
- Hydrogen & Derivative Fuels for Industry (H₂, Ammonia, Methanol) (EUABAJAC), Cryogenic Liquid Hydrogen Storage for Power-to-X Hubs (LH2 Tanks, Boil-off Mgmt) (EUAFAFAG)
Keywords
Where HySun is headquartered
LocationHeadquarters
- HQ city
- Madrid
- HQ country
- Spain
- HQ region
- Europe
Offices2 records
Markets served
HySun business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure
Revenue model
- Hydrogen Production Systems: Sale of hydrogen production plants/systems using proprietary photo-thermo-catalytic technology. Plants are modular with designs for 50, 790, and 9000 tonnes/year capacity.
- Technology Licensing: Technology developed for industrialization and scaling to other markets and partners.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Small scale: 45 tonnes H2/year |
| Unit Pricing | Multi-year contract | Large scale: >9000 tonnes H2/year |
Go-to-market motion2 records
Distribution channels1 record
Marketing channels3 records
HySun product offering
Product offeringCore offering
HySun designs, manufactures, and sells modular hydrogen production plants based on its proprietary Hyloop photo-thermo-catalytic process. The system combines Metal Molecules (M-M) catalysts with Concentrated Solar Thermal (CST) technology to convert water and sunlight directly into 100% renewable hydrogen without electricity. Available in three scales (50, 790, and 9000+ tonnes H2/year), the plants enable off-grid operation with production costs of $1-3/kg.
Product overview
HySun offers a single unified product: the Hyloop Solution based on M-M/CST (Metal Molecules with Concentration Solar Technology) photo-thermo-catalytic system for 100% renewable hydrogen production. The core offering consists of modular off-grid hydrogen plants that convert water and sunlight directly into pure hydrogen without requiring electricity or gas separation. The technology achieves over 40% Solar To Hydrogen efficiency and produces hydrogen at $1-$3/kg depending on plant size. The Hyloop Solution and M-M/CST Plants are the same underlying technology offered at different scales.
Differentiator
Problem solved
Functional benefit
Products and services
- Hyloop Solution (M-M/CST Photo-Thermo-Catalytic Hydrogen Production System) A 100% renewable hydrogen production system that uses Metal Molecules (M-M) catalyst with Concentrated Solar Thermal (CST) technology to convert water and sunlight directly into pure hydrogen without electricity or grid connection, achieving over 40% Solar-to-Hydrogen efficiency. Sold to industrial enterprises in heavy industry, transport, and remote energy markets.
- M-M/CST Modular Hydrogen Plants Modular off-grid hydrogen production plants based on Metal Molecules catalyst with concentrated solar thermal technology, available in three conceptual designs: 50 t/year, 790 t/year, and 9000+ t/year capacity. Achieves hydrogen production at $1-$3/kg depending on plant scale, with small footprint and easy integration into most industrial sites.
Quantifiable outcome
- 40%+ Solar-to-Hydrogen (STH) efficiency
- +5 more outcomes
Companies that use HySun
Customer profileSegments3 records
Ideal customer profiles2 records
HySun technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability2 records
Feature4 records
HySun partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- NANOGAPcoreParent company and co-founder of HySun. Created Metal Molecules (M-M) technology with unique catalytic properties. Contributed photocatalytic hydrogen production technology developed through BacToFuel project.
- TEWER EngineeringcoreSpanish engineering company and co-founder of HySun. Provides multidisciplinary solutions in Concentrated Solar Power (CSP) technologies. Expert in product design, validation, assembly, and commissioning with strong focus on CST systems.
- CIEMAT - Plataforma Solar de AlmeríacoreLargest concentrated solar power research center in Europe. Hosted installation of HySun's first industrial prototype for real-world validation of the technology.
- USC (University of Santiago de Compostela)minorS☼LAR-H₂R project collaborator providing academic research support in solar thermal technologies and hydrogen production research.
- UC3M (Carlos III University of Madrid)minorS☼LAR-H₂R project collaborator providing research expertise in collaboration with HySun, Tewer Engineering and NANOGAP.
- BacToFuel ConsortiumminorEU Horizon 2020 project (Grant Agreement No. 825999) including USC, NANOGAP, Lancaster University, VITO, Wageningen University, and TU Berlin. Developed photocatalytic hydrogen production technology foundational to HySun's current technology.
Scale indicators8 records
Recent moves7 records
Expansion highlights5 records
HySun competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
HySun social profiles
Digital presenceHySun financial estimates
Financial estimateRevenue estimate
Valuation estimate
HySun leadership team
Management profileNumber of profiles
Profiles6 records
HySun funding detail
Funding detailFunding overview
Funding rounds1 record
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
HySun M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about HySun
What does HySun do?
HySun designs, manufactures, and sells modular hydrogen production plants based on its proprietary Hyloop photo-thermo-catalytic process. The system combines Metal Molecules (M-M) catalysts with Concentrated Solar Thermal (CST) technology to convert water and sunlight directly into 100% renewable hydrogen without electricity. Available in three scales (50, 790, and 9000+ tonnes H2/year), the plants enable off-grid operation with production costs of $1-3/kg.
Is HySun a public or private company?
HySun is a private company. It is classified as venture growth investor backed and is currently operating.
When was HySun founded?
HySun was founded in 2022. It employs 1 to 10 people.
Where is HySun based?
HySun is headquartered in Madrid, Spain, in the Europe region.
How does HySun make money?
Two revenue lines are on record. Hydrogen Production Systems are the primary driver. The others are technology Licensing.
Does HySun have an API?
No public API is recorded for HySun.
What industry is HySun in?
HySun's product category is Green Hydrogen Production Systems. Its primary akta.pro industry code is IMAEACAB, Hydrogen (Industrial & Mobility), with a secondary code of EUABAJAC, Hydrogen & Derivative Fuels for Industry (H₂, Ammonia, Methanol).