Top 10 Clean Energy Startup Investors in Ireland (September 2026)

Portfolio highlights

• Learnsignal — Online courses for ACCA, CIMA, CPD, FRM and AAT with test prep material, free resources, mock exams, and study support.
• Adama Innovations — Sharp Conductive Single Crystal Diamond AFM Probes
• Touchtech Payments — At Touchtech Payments, believe in making industry changing and innovative technology.

Portfolio highlights

• Decahydron — Decahydron is a clean energy and climate-technology company focused on the exploration and production of naturally occurring hydrogen and the permanent mineralisation of CO₂ in ultramafic rock formations. The company develops subsurface technologies that enable low-cost, scalable hydrogen production while delivering verifiable, geological carbonstorage through in situ mineralisation.Founded in 2022 and headquartered in the Ireland, Decahydron operates at the intersection of natural hydrogen, carbon capture, utilisation and storage (CCUS), and subsurface engineering. Its approach targets ultramafic and ophiolitic geological formations, where natural hydrogen can accumulate and where injected CO₂ reacts with magnesium-rich minerals to form stable carbonate minerals, providing permanent and water-free carbon sequestration. The company has secured exploration and mineral rights across multiple jurisdictions in the UAE and is expanding internationally, with activities and partnerships spanning the Middle East and Europe. Decahydron works with governments, industrial emitters, and energy companies to support decarbonisation of hard-to-abate sectors while creating a new supply of low-carbon hydrogen.Decahydron has raised capital from international climate-focused investors and strategic partners and collaborates with major industrial and energy companies on pilot and commercial projects. Its long-term ambition is to enable gigaton-scale permanent CO₂ storage and establish natural hydrogen as a competitive, reliable pillar of the global clean energy system.
• Eclipse Energy — At Eclipse Energy, we bring science and strategy together. By integrating geology, engineering, and deep microbiology, we transform overlooked subsurface assets into clean energy opportunities.
• AlphaX Decision Sciences — AI-native forecasting and decision platform for oil & gas. Used by operators and investors to cut complexity, strengthen negotiation, and move at risk-adjusted speed.

Portfolio highlights

• meddi — Unfortunately, in Mexico only 5% of the population has access to a private health insurance. Everyone else, can have access to IMSS or ISSSTE. However, it is well-known that we are unhappy and unsatisfied with these institutions.At present doesn’t exist a prevention culture, if you don’t have healthy habits or if your genes simply are not on yourfavor, probably you could develop a complicated illness or health condition and next pay for medical attention in the private sector. We are developing an integral system of digital health, that allows to:- Access to a healthcare provider’s network that offer economical services for a timely attention. - A lifetime of medical data integrated and the possibility of sharing the information with the patient’s healthcare providers. - Predictive analysis to generate personalized follow-ups. - To help create a prevention culture we offer free services as: o Medical advice in person and through telemedicine. o Initial check-up and blood tests.All those services are included in a Basic annual membership for $199.00 pesos.The health data digitalization has the potential to improve access to healthcare, reduce expenses, and to reach people who wouldn’t have access to services.Today we are playing a part in the creation of new health care models, Do you join us?
• NovoGrid — Rapid Grid Connection Assessments for renewable energy & data centre developers.We quickly & confidentially qualify potential development sites in/out by providing a menu of grid connection options (Capacity, Capex, Curtailment & Realistic Timelines).Our patented suite of power flow software tools enable us to analyse powergrids 10x faster & in 10x more detail than standard.NovoGrid is a profitable high-growth company and includes most of the large renewable energy & data centre companies as clients.We are not fundraising at this time.

Portfolio highlights

• kMap ltd. — kMap ltd. provides a real-time report management, information, and control platform.
• NovoGrid — Rapid Grid Connection Assessments for renewable energy & data centre developers.We quickly & confidentially qualify potential development sites in/out by providing a menu of grid connection options (Capacity, Capex, Curtailment & Realistic Timelines).Our patented suite of power flow software tools enable us to analyse powergrids 10x faster & in 10x more detail than standard.NovoGrid is a profitable high-growth company and includes most of the large renewable energy & data centre companies as clients.We are not fundraising at this time.
• Open for Vintage — Open for Vintage

Portfolio highlights

• Relocraft — Relocraft is transforming the relocation process by providing a comprehensive, digital service. It provides comprehensive services to businesses, including assistance with visa applications and work permits, as well as finding housing and integrating into their new environment.
• Terra Solar — Terra Solar is at the forefront of solar energy development in Ireland, helping the country lead the way in developing renewable energy sources and increasing its energy independence.Terra Solar exclusively develops, finances, constructs, and operates solar farms on the island of Ireland. The company partners with commercial enterprises andprivate landowners to identify suitable sites for solar development and subsequently bring those sites from planning and grid approval stage through to fully operational solar farms.
• Power to Hydrogen — Power to Hydrogen (P2H2) is simplifying hydrogen. Our technology enables a brighter energy future by solving the technical and economic challenges that come with producing hydrogen. Our AEM-based, electrolysis technology produces high pressure, high efficiency hydrogen from renewable energy with lower cost materials thancompeting electrolyzers. This technology can reduce the total cost of hydrogen to enable clean transportation, store energy efficiently, and decarbonize industrial processes. In addition to low-cost, high-pressure hydrogen production, the technology can produce high-pressure oxygen and be used reversibly to produce electricity. Both services can create additional revenue streams to make the total cost of hydrogen $1/kg.

Portfolio highlights

• Ovagen — Ovagen is a biotechnology company that has developed the process of producing germ free (GF) chicken eggs and GF birds in commercial quantities for use primarily in the pharmaceutical industry. Ovagen can also provide a Contract Research Service and has extensive expertise in SPF poultry & rodent housing & husbandry, in specific poultry& rodent research technologies to GMP standards and in avian transgenics.
• Peroptyx — Peroptyx is a platform that provides managed solutions for machine learning. At Peroptyx, they have assembled and pre-screened a qualified network of data evaluators across the globe. They strategically match ideal evaluators with each product to ensure authentic experiences through consistency and appropriate real-world contexts.
• Galway Biomedical — Galway Biomedical partners with global medical device companies to bring complex braided devices from early concept through to full-scale production.

Portfolio highlights

• Novus Diagnostics — Sepsis causing pathogen diagnostics under 15 minutes
• Vertigenius — Enhance patient care and treatment options for vertigo and dizziness with Vertigenius, enabling effective management and improved outcomes for your patients.
• Adama Innovations — Sharp Conductive Single Crystal Diamond AFM Probes

Portfolio highlights

• Fincovi — Powering Every Connection Purpose-built autonomous drones perform at record-setting inspection speed to minimize downtime while capturing the
• Luna Connect — Luna Connect provides easy online loan applications for alternative lenders. We replace expensive, manual, underwriting processes with automated data driven algorithms using alternative data and machine intelligence.

Portfolio highlights

• Nory AI — Revolutionise your restaurant with Nory's restaurant management software. Streamline operations, boost profits, and enhance decision-making in one platform.
• Dataships — Dataships uses top level data privacy software to help your brand, no matter your location.
• Ceartas DMCA — Ceartas is the leader in piracy protection for creators, brands & enterprise. Powered by AI, we have the highest removal rate in the industry

Portfolio highlights

• Qivalis — Qivalis is a financial technology company designed for payments, settlements, and financial services.
• Sonnedix — Sonnedix is an Independent Solar Power Producer (IPP) with a proven track record in delivering high performance cost competitive solar photovoltaic plants to the market.
• Park Developments — Park Developments are one of the most respected property developers in Ireland with a reputation for innovative designs and premium properties.