THE PROBLEM Searching second-hand online requires navigating hundreds of platforms and incomplete listings, forcing shoppers to do the heavy lifting of finding and comparing relevant items. The decentralized and the fragmented second-hand market creates a time-consuming and frustrating experience for shoppers to locate desired items among incomplete listings and outdated platforms. THE SOLUTION Koral aggregates millions of second-hand listings into one searchable platform with categorized, indexed data to create a one-stop solution. This eliminates tedious searches across individual platforms, making shopping second-hand is easier by improving discoverability and streamlining the process of finding desired items online.

Aerial Tools is a hardware and software startup that develops a heavy duty modular drone. The unmanned aircraft system will allow the user to extract data from multiple sensors, while facilitating the integration of ML & AI tools. Our primary target markets are the monitoring and inspection of the renewable energy and agriculture sectors. There, we can contribute towards a cleaner environment and more sustainable water use.

ReFlow is on a mission to support the decarbonization of the maritime industry. We are building a brand-new platform from scratch, designed to empower stakeholders with the tools and insights needed to drive sustainable change. We have a fun and social atmosphere, with an amazing location in the center of Copenhagen—right next door to the King and Queen! We’re a small, transparent team that shares insights into everything—from customers to numbers, the good and the bad. While we love working together in the office and prefer to have most of the team on-site, we're also quite flexible when it comes to remote work when needed. And did we mention the legendary post-lunch beer at the bar below? It's something you don’t want to miss! As a team, we win together, supporting each other every step of the way.

A revolutionary solution to tackle your daily limescale problems: The Limescale Crusher (Kalkknuser). Our unique and innovative device is designed to be easily attached to the exterior of your water pipes, effectively 'crushing' limescale buildup without the need for any chemicals. Not only does our solution eliminate limescale issues, but it also enhances the lifespan of your kitchen appliances.

SynergyXR is the leading no-code XR and Spatial Computing SaaS platform for the industrial, manufacturing, and energy sectors, enabling companies to build, operate, and optimize safe immersive learning programs at a scale, speed, and cost not previously possible. SynergyXR sees a present and a future where extended realities, like augmented and virtual reality, will continue revolutionizing how we work, live, and play. With extensive expertise and experience within the manufacturing and energy sector, and specialized solutions for technical training and onboarding, we are committed to helping these technologies become the norm. By designing and building people-first solutions, we help bring XR technology, such as Virtual Reality and Augmented Reality, to businesses today, not tomorrow.

Climaider is a rapidly growing startup, enabling Small and Medium sized Enterprises to measure and report their ESG and to take real climate action. ESG reporting is becoming a necessity if you want to stay competitive, retain your employees, get funding or financing and win customers and jobs. But SMEs have been left behind in a reporting environment that has been shaped first and foremost to accomodate very Large enterprises - leaving SMEs with an extremely complicated and tedious reporting job that often falls on employees or owners with a 1000 other responsibilities too. We help and guide SMEs, automate +95% of the work and instill in them the confidence that they can do this and that they have done it the right way. Our goal is to remove the headache of reporting, leaving room to focus on what is actually important: Reducing the carbon footprint of your company. We're set on becoming THE solution for SMEs all over Europe, making reporting easy, comparable and actionable. Join us!

We are devoted to accelerating the development and adoption of technologies that can help fight climate change by actively removing CO2 from the atmosphere. The challenge We are emitting 50 Gigatons of CO2 every year, and that needs to be reduced by at least 80%. However, that still leaves 10 Gigatons of CO2, and we need to get all the way to zero. Trees are great, but we need many more solutions as well if we are to get to zero. Currently, most of these are way too expensive (and limited in capacity) for companies to use. We've developed a platform that combines methods and makes it available to every company that wants to compensate their emissions. We work with cutting edge technologies, including Direct Air Capture, Bio char, Bio oil etc.

PowerCon Embedded A/S is a consulting company specializing in converter control, power electronics and embedded development. Throughout the years, we have worked with large wind turbine OEM's, as well as several product manufacturers in Denmark. We are a company that also looks into the future and are currently investigating projects and solutions within Cloud and Internet of Things development. Join our journey and learn from our team of seasoned experts along the way. We are always open for unsolicited applications.

CityCharge is a fast growing startup based in Oslo Norway. It was founded in 2018 and is currently receiving support from InsjUIO incubator, and collaborating with Xplorico and other partners. We are launching our product and services to Stockholm Sweden in 2020. CityCharge gives users' mobile phone power on demand through its network of portable power banks, whilst providing venues with a unique marketing tool driving customer flow. Users can find CityCharge stations in their favourite venues, like shops, restaurants and cafes, all over the Nordics. Open the app to find the stations near them. CityCharge’s portable power banks include cables for all types of phones with fast charging service, giving users the freedom to charge on the go. Users can return the power bank to any CityCharge station in the network, from the local cafe to the favourite nightclub. CityCharge's mission is to give users opportunity to be powered and stay connected any time any where, and to turn that need into venues benefits. In short term, we provide power bank sharing service for charging the phone.

Airlabs is an organisation with foundations in atmospheric chemistry and airflow engineering that has been established out of a desire to tackle the huge social problem of air quality in cities across the world. Our work is the result of active collaboration between our team and some of the world’s leading applied environmental research and engineering institutes. Our team brings together experts from widely varying disciplines: from atmospheric chemistry to pollution monitoring, from fluid dynamics to environmental health and from economics to engineering and design.

Pathways is building the data-layer for sustainable manufacturing. AI to streamline the $350B spent on documentation in manufacturing starting with Life Cycle Assessments and Environmental Product Declarations. In the next 30 years, we'll be building more than we ever have in human history, Pathways is on a mission to decarbonize every brick, beam and window. Our customers are the actual manufacturers: Ready Mix Concrete, Cement and Steel.

MS Toftegård er en dansk vækstvirksomhed, der arbejder med professionel vanding og pleje af træer og grønne områder for kommuner, entreprenører og boligselskaber. I højsæsonen beskæftiger vi omkring 100 medarbejdere og løser opgaver på tværs af Sjælland, Fyn og Jylland. Siden starten har data og digitale systemer været en vigtig del af vores måde at drive virksomheden på. Vi bruger blandt andet data til planlægning af opgaver og ruter, styring af medarbejdere og køretøjer samt kvalitetssikring og dokumentation over for vores kunder. Vi har store ambitioner for den videre udvikling af virksomheden og ser et betydeligt potentiale i AI, automatisering og bedre anvendelse af vores eksisterende data. Målet er at skabe en mere effektiv drift, en bedre arbejdsdag for medarbejderne og endnu bedre løsninger for vores kunder. MS Toftegård er kendetegnet ved korte beslutningsveje, stort ansvar og en praktisk tilgang, hvor gode idéer hurtigt bliver afprøvet og omsat til løsninger, der fungerer i hverdagen.

UNYA Copenhagen is a volunteer-driven youth organization dedicated to empowering young people to engage with global challenges through the lens of the United Nations’ values and the Sustainable Development Goals. We create an inclusive platform where students and young professionals can learn, collaborate, and take action on issues like climate change, social inequality, peacebuilding, and innovation. We are addressing a clear and growing problem i.e. the disconnect between youth and global institutions. Many young people in Denmark care deeply about sustainability and justice but find it difficult to access meaningful opportunities to participate in international dialogue or contribute to real-world impact. This gap leaves motivated individuals without a channel to apply their energy, creativity, and ideas, while institutions miss out on fresh perspectives and engagement from the very generation that will inherit the future. UNYA Copenhagen bridges this divide by turning global ideals into local action. We organize interactive events, workshops, and panel discussions that make complex global topics accessible and relevant. Our activities are co-created by volunteers from diverse academic and cultural backgrounds who bring their own insights to the table. Through collaboration with universities, NGOs, and public institutions, we connect youth directly with experts and decision-makers, fostering a sense of shared responsibility and agency. What makes UNYA Copenhagen unique is our grassroots approach. We are not just an organization — we are a community that thrives on collective energy and creativity. Every project is designed by young people for young people, ensuring authenticity, inclusivity, and long-term motivation. Our strength lies in our diversity and the genuine commitment of our volunteers, who bring the UN’s global mission to life in a way that feels personal and actionable. The motivation behind UNYA Copenhagen is simple: we believe that youth engagement should not be limited to classrooms or conferences but should become a lived experience. We started this initiative because we wanted to make international dialogue tangible, local, and inspiring. Our team members share a passion for learning, community-building, and positive change — values that drive us to dedicate our time to building something meaningful together. Today, UNYA Copenhagen continues to grow as a platform where ideas turn into impact. We are seeking motivated individuals who want to gain experience in leadership, communication, and project management while contributing to a global cause. By joining The Hub’s Community Program, we hope to reach more passionate volunteers who want to be part of a dynamic network that connects Copenhagen’s youth with the world.

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

MoveByBike is an urban logistics company. We deliver products by electric cargo bikes, focused on 'last mile logistics.' We specialise in the food and subscription sectors, however with our large bikes we can move many products within any industry. Our goal is to remove as many trucks and vans from the city as possible. We are growing fast, so committed individuals are always welcome to apply for driver and internship positions. Look out for our bikes around the city!