Meet the Alumni
Net Zero Start-Up Hub
In 2026, the inaugural program brought together startups from Denmark, Finland, Germany, and the United States to explore how emerging technologies can help address some of the industry’s most pressing challenges.
2025-2026 Cohort
AirJoule, LLC (“AirJoule”) is the leading platform technology that unleashes the power of water from air. AirJoule is a 50/50 joint venture between GE Vernova and AirJoule Technologies Corporation (NASDAQ: AIRJ).
Headquartered in Newark, DE focused on freeing the world of its water and energy constraints by delivering groundbreaking sorption technologies.
Founded: 2024
Country: United States
2025-2026 Cohort
Halide Energy is a Finnish developer and manufacturer of copper flow batteries to meet the energy flexibility and long-duration storage needs of grid and industrial adopters, helping to accelerate the energy transition.
Founded: 2025
Country: Finland
2025-2026 Cohort
Neocarbon supercharges datacenter cooling systems with a carbon-negative, water positive cooling solution that converts data center waste heat into value: specifically, the technology redirects electricity from cooling to compute, acts as a thermal buffer for fluctuating AI loads in high power density environments and generates CO2 and water from waste heat and air.
Founded: 2022
Country: Germany
2025-2026 Cohort
ShipTown has developed the H-Battery, a high-efficiency power backup system based on reversible fuel cell technology and hydrogen storage.
The system converts electricity to hydrogen for storage and reconverts hydrogen to electricity when needed, enabling dispatchable, long-duration backup without fossil fuels. The H-Battery provides resilient standby capacity that can operate independently of grid constraints.
Founded: 2023
Country: Denmark
2025-2026 Cohort
Sperra is a U.S.- and Denmark-based climate tech company developing marine infrastructure through 3D concrete printing.
With roots in offshore energy and advanced manufacturing, the company is exploring offshore data centers—both near urban demand and alongside renewable energy.
Founded: 2015
Country: United States & Denmark
2025-2026 Cohort
Zero Entropy ApS is a Danish energy-technology startup, founded by two successful serial entrepreneurs developing advanced expander technology for high-efficiency heat pumps and cooling systems. The company focuses on recovering energy that is normally lost in thermodynamic cycles.
Zero Entropy’s core concept is to recover energy that is normally lost in conventional thermodynamic cycles.
Founded: 2023
Country: Denmark
