Investment Accelerator Programme Launches Batch 3 with Seven Pioneering Cleantech Companies

The Investment Accelerator Programme is proud to announce the commencement of its third cohort, bringing together seven innovative startups dedicated to advancing climate technology solutions. This batch represents a diverse array of companies tackling critical challenges in energy, materials, and industrial efficiency. 

Over the coming months, the accelerator’s investment-readiness coaches will work closely with the selected founders to refine their fundraising strategies—both for the immediate round and for long-term growth. The program will also sharpen each company’s scale-up roadmap. Once equipped, the startups will be introduced to a curated network of international investors best positioned to support their next stage of growth. 

Meet the Batch 3 Companies 

2D fab 

2D fab is a large-scale manufacturer of graphene-based products. Their patented 2Dx® process enables cost- and energy-efficient graphene production, removing the economic and technical barriers that have previously limited graphene adoption in price-sensitive industries. Their key focus areas are advanced adhesives, sustainable concrete, and innovative solutions in areas such as electronics and energy storage. Their ambition is to bridge the gap between advanced material science and real-world industrial impact. 

3E Flow 

3E Flow has developed a patented, intelligent water distribution system that revolutionizes how buildings manage tap water. By removing the need for still-standing heated water in pipes, the system delivers up to 50% energy savings and 33% water savings while eliminating hygiene risks like Legionella. With over 80 patents and proven installations in Sweden and Switzerland, 3E Flow is targeting new builds and renovations in the DACH and Nordic regions, backed by a scalable business model and strong IoT capabilities. 

Direct Carbon 

Direct Carbon offers scalable carbon capture solutions (DAC) specifically designed for indoor farming. Their machines extract CO₂ directly from outdoor air to enrich the atmosphere in greenhouses and promote plant growth. Today, around 90% of farms use fossil-based CO₂ to boost production. By integrating Direct Carbon’s DAC machines, indoor growers can achieve more sustainable and efficient production while also contributing to the reduction of greenhouse gas emissions. With a subscription-based model that eliminates upfront costs for clients, and proprietary technology with applications beyond indoor farming, Direct Carbon is ready to scale globally. 

Enerpoly 

Enerpoly develops zinc-ion battery technology for stationary energy storage applications. Thanks to a patented breakthrough in battery chemistry, Enerpoly is able to produce affordable battery cells and packs using abundant low-cost materials with 100% European sourcing and 70% lower CO₂ emissions than current BESS batteries (LFP). In addition, thermal runaway is chemically impossible with Enerpoly’s zinc-ion batteries, making them suitable for high-safety applications.  With a megafactory in place in Stockholm and plans for giga-scale production, Enerpoly will enable superior safety, supply chain security, sustainability, and affordability in energy storage. 

Enjay 

Enjay addresses the challenge of recovering heat in some of the most valuable yet difficult industrial environments, such as commercial kitchens and industrial drying processes. Their flagship product, Lepido, is the world’s first industrial heat exchanger capable of recovering energy from polluted exhaust air. What sets the technology apart is its ability to operate effectively even when the air contains high levels of particles. By significantly reducing energy consumption, Lepido delivers both a strong return on investment and a substantial reduction in Scope 1 emissions for businesses. 

Graphmatech 

Graphmatech addresses the longstanding challenges that have held back graphene’s widespread adoption, despite the material’s game-changing properties. Graphmatech’s patented technology structures graphene and infuses it into polymers and metals in a cost-effective way. This allows them to produce graphene-infused materials that increase performance, resource efficiency, and sustainability in a wide range of industrial processes. Their customers are industrial component manufacturers such as producers of pipes, cables, and vessels, who can replace traditional materials with higher-performing, more sustainable alternatives. The addressable market spans multi-billion dollar sectors across polymers, packaging, 3D printing, hydrogen, and defense. By increasing its production capacity and developing new applications, Graphmatech aims to become a leading player in sustainable material solutions. 

Mat4Green Tech 

Mat4Green Tech is a deep tech company that is revolutionizing the production and recycling of Indium Tin Oxide (ITO), a critical material for high-efficiency solar cells. Their patented, breakthrough process cuts CO₂ emissions by 80%, increases material recovery from 60% to 95%, and slashes costs by 35%. As the only EU-based Indium recycler, they fill a strategic gap in a geopolitically sensitive market and thus can become a key enabler of Europe’s sustainable energy future.