Rockstart is an early-stage investor that empowers purpose-driven founders across three domains: Energy, AgriFood, and Emerging Technologies. Rockstart invests in early-stage startups and provides access to capital, market, and expertise by connecting founders with co-investors, mentors, partners, corporates and the wider Rockstart network. Rockstart has invested in more than 300 startups and its alumni value to date is more than $1bn. Rockstart is an international team of 45+ professionals dedicated to empowering purpose-driven founders to become scalable and drive positive change on a global scale. The company has offices in Amsterdam, The Netherlands, Copenhagen, Denmark and Bogota, Colombia.

Keima is a climate tech startup making renewable energy a better and more reliable investment. We're building tools that boost ROI on solar and wind assets across Europe, while making both the investments and the energy produced accessible for any type of consumer, big or small. To begin with we are doing this by being the first vendor able to enable energy sharing communities in Denmark.

2 billion people in the world do not have access to safe drinking water, resulting in 500,000 deaths yearly. SolarSack has developed an affordable and non-chemical household water purification solution. SolarSack can purify 4L of water in 4 hours using only sunlight. It is reusable 500 times, providing 2,000L of purified water for only $4 - enough for a family of four for an entire year.

Nuvve powers the future of flexible energy by turning electric vehicles (EV), batteries, buildings, and distributed assets into dynamic grid resources. At the core is Nuvve’s advanced platform for vehicle-to-grid (V2G) and intelligent energy management, orchestrating real-time bidirectional charging, load optimization, and grid services. By harnessing an ecosystem of electrification partners, fleets, stationary storage, and smart EV chargers, Nuvve helps utilities and communities unlock flexibility at scale — enhancing reliability, accelerating electrification, and lowering costs. Nuvve enables a clean energy future where mobility, buildings, and infrastructure work together to support a more resilient, sustainable, and equitable grid. Headquartered in San Diego, California, Nuvve operates globally and online at nuvve.com

GLYON is developing a CO₂-powered textile-to-textile recycling technology to help brands, fiber producers, and recyclers solve the growing textile waste crisis with a breakthrough chemical recycling process that turns waste into virgin-quality raw materials for new fibers—without fossil fuels. We address the massive problem of textile waste, a global crisis where over 92 million tonnes of textile waste are discarded each year—most of it ending up in landfills or incinerated. This contributes to major pollution issues but also forces the textile industry to continue its dependence on virgin fossil-based materials. Our solution targets fiber producers, brands, and recyclers who need circular raw material solutions. Our CO₂-based chemical recycling process breaks down polyester textiles into building blocks and leaves other fibers like cotton intact. Both PET building blocks and cotton can be used to produce new, high-quality fibers without the need for virgin oil and reducing water consumption and CO₂ emissions.

At Envo, we simplify energy optimization for real estate by helping property owners, banks, and advisors reduce CO₂ emissions and lower operational costs. We’re a young, agile startup based in Copenhagen, where creativity, independence, and collaboration are at the heart of our work. Our mission is to empower our clients with smart, user-friendly tools that guide them in making their buildings more energy efficient. We’re committed to sustainability and innovation, and every team member has the opportunity to shape our products and company culture.

Neucom builds ultra-efficient hardware accelerators that combine minimal power consumption with maximum human oversight. We work towards a freer and fairer world with trustworthy technology, one chip at the time. Our hardware is informed by neuroscience to achieve minimal power consumption. Our headquarter is in Lyngby, just north of Copenhagen Denmark.

At Celsia our vision is empowering decisions to be made with sustainability as the forethought by making sustainability scoring simple. Celsia exists to make sustainability scoring simple, fast, and efficient. We drive sustainability comparability and are committed to enabling both small and large companies to participate in the green financing system, no matter the size of one's budget. With software, we make sustainability scoring frictionless and for everyone. We are a Norwegian startup with offices in Oslo & Berlin. The Celsia gang is constantly growing, so chances are by the time you’re reading this we’ve already doubled in size! We’re a group of passionate folks with diverse backgrounds and all kinds of hopes and dreams. We do share some things though, like our passion for sustainability, our love of cheesy jokes during daily stand-up, and our willingness to go above and beyond to ensure everyone is enjoying the adventure.

NOON Ventures is a Copenhagen-based early-stage investor established in 2020. We invest in proven transformative technologies with the potential to significantly impact environmental or climate challenges. Our aim is to become the preferred partner for green entrepreneurs, and we do so by limiting our investments to few companies and working day-to-day with each of them – a fundamentally different approach than traditional early-stage investors. We believe that it takes much more than capital for companies to succeed - commercial experience, execution power, access to the right talent, network, and partners to name a few. We typically engage ourselves in all aspects of the business and do real work together with the founders applying the experience of our team, investors, and specialist advisors across mission-critical disciplines from strategy to customer introductions, and financing activities. NOON Ventures aspires to be true co-developers of businesses alongside the entrepreneurs, and we dedicate the time required to build lasting businesses.

Climate change is one of the biggest challenges humanity is facing. Solar power is expected to play a big role in reducing the use of fossil fuels. We make solar power plants more efficient and cost competitive, by increasing the energy production. At Startak we design and manufacture control systems for solar trackers used in large solar photovoltaic plants, to increase the energy production by 10-20% (depending on latitude). We provide our customers with a simple to use, modern and reliable hardware and software solution that is designed to give you peace of mind and control for the lifetime of your solar plant.

ENFOR specializes in renewable energy and consumption forecasting. We serve customers in over 35 countries internationally. We are on the cutting-edge of finding solutions for our clients that are faced with ever-increasing levels of renewables penetration. Our clients have come to rely on us as trusted partners in the Energy Transition.

Rock Flour Company is a dynamic, mission-driven startup founded by Professor Minik Rosing, the world-renowned geologist and pioneer of utilizing Greenlandic Rock Flour (GRF) for carbon-negative agronomic applications. Our core mission is ambitious: to bring GRF to market, enabling sustainable agriculture, facilitating carbon removals at scale, and delivering tangible economic benefits to local communities in both Greenland and specific farming regions globally. Today, we’re a dynamic core team of five with a validated potential by top investors across the globe. In September this year, we raised our second financing round featuring major commitments from Danish & Greenlandic institutional investors like Novo Holdings, EIFO (Danish state venture fund), SISA, and Nalik Ventures.

Seaborg is developing a nuclear reactor technology fundamentally different from what exists today. We are making nuclear an inexpensive, sustainable and safe technology that can out-compete fossil fuels and revolutionise energy markets. We are designing our Compact Molten Salt Reactor to be one of the most sustainable sources of energy in the world. From being a start-up in a basement Seaborg is today employing more than 20 people and scaling fast.

Leapcraft orchestrates healthy and efficient buildings. We work with international clients from the public and private sector to deliver actionable insights into the climate in and around their buildings to help them optimize for energy savings and better productivity. We are thought leaders in IoT-sensors and data infrastructure for environmental monitoring.

OceanPass helps you stay ahead with an environmental reporting tool that gives shipowners, banks, and charterers real-time insights—whether it's across your fleet, portfolio, or individual voyages. With validated data and compliance clarity, you can protect your investments and drive lasting impact.