Best Sustainability Tech Companies in State of Hessen, Germany
The 35 best Sustainability Tech companies in State of Hessen, Germany in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: ECO Group.
Our analysis of 50 Sustainability Tech companies
$6.1b in tracked funding; 91% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2024.
Ranked: Best Sustainability Tech companies in State of Hessen
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | ECO Group Online platform offering project management solutions | $8M | 38 mo ago | Series A | Christoph Schwerdtle Co-Founder & Managing Director | 2022 | Cart FunctionalityShopifyYouTube+29 | 16 patents Superconducting rotary machines with consecutive and slidable pole designs for high-efficiency power generation | — |
| 2 | wind-turbine.com Online marketplace of wind turbines | $6M | 50 mo ago | Funding Raised | Bernd Weidmann Managing Director | 2016 | LeafletChart.jsCentOS+18 | — | — |
| 3 | Enercast Provider of specialized forecasting solutions for renewable energy integration and trading | $3M | 142 mo ago | Series B | — | 2011 | WordPressMySQLSalesforce+15 | — | — |
| 4 | Otark Platform providing procurement solutions for renewable energy and power purchase agreements 16Talent top 38%Tech bottom 48%Funding bottom 40%Global bottom 29% All 5 signals ▾Talenttop 38% Techbottom 48% Fundingbottom 40% Globalbottom 29% Marketbottom 25% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Tech: 20 technologies across 4/8 capability areas · Cloud: Amazon Web Services, Cloudflare rank vs industry peers · Fliar Intelligence Index 16/100 | $3M | 25 mo ago | Seed | Jan Quecke Co-Founder & CEO | 2023 | WebflowGSAPAmazon Web Services+17 | — | — |
| 5 | CO2BioClean Developer of technology converting industrial carbon dioxide emissions into biopolymers | $2M | 42 mo ago | Seed | Alessandro Carfagnini Co-Founder & CTO | 2018 | — | 10 patents Sustainable production and formulation of novel biodegradable co‑biopolymers and bioplastics | — |
| 6 | Preventio AI & SaaS-driven building diagnosis solution for buildings | $1M | 54 mo ago | Seed | Frederic Büdel Founder | 2021 | — | — | — |
| 7 | Bettervest Developer of a P2P lending platform for energy efficiency projects | $224K | 129 mo ago | Funding Raised | Marilyn Heib Mitbegründer und CEO | 2006 | WordPressMySQLPHP+26 | — | — |
| 8 | Retroflow Planning and modelling of grid networks | — | 41 mo ago | Funding Raised | Leon Thurner Co-Founder & Managing Director | 2021 | — | — | — |
Top 11 Sustainability Tech companies in State of Hessen
#1
Seed · Frankfurt, State of Hessen · founded 2023$2.8Mraised▾
Platform providing procurement solutions for renewable energy and power purchase agreements. It offers a marketplace for standardized and individual power purchase agreements. The platform facilitates the origination, execution, and trading of renewable energy. It provides tools for digital tendering, intelligent comparison, and access to a network of project developers. The platform also offers solutions for managing renewable energy portfolios.
- Sep 2024Seed$2.8M
#2
Series A · Bad Homburg, State of Hessen · founded 2022 · 10 employees$8.3Mraised▾
Online platform offering project management solutions. It enables to build of scale leveraging individual strengths in different business areas. It provides information about companies and organizations which are passionate about a sustainable future.
- Jul 2023Series A$8.3M
#3
Seed · Kronberg, State of Hessen · founded 2018$2.2Mraised▾
Developer of technology converting industrial carbon dioxide emissions into biopolymers. The technology utilizes a fermentation process to transform captured carbon dioxide into fully biodegradable PolyHydroxyAlkanoates. These polymers can be used in the production of bioplastics and textiles, displacing fossil-fuel based materials. The fermentation units integrate with existing industrial infrastructure, capturing emissions at the source.
- Apr 2023Seed—
- Sep 2022Grant (prize money)$2.2M
- Dec 2021Grant (prize money)—
#4
Funding Raised · Gelnhausen, State of Hessen · founded 2016$5.5Mraised▾
Online marketplace of wind turbines. It is a marketplace for the wind industry, providing a platform for companies to buy and sell wind turbines, components, and spare parts. Users can purchase the wind energy products via the website. The platform aggregates market data and trends, offering insights to the industry.
- Jul 2022Grant (prize money)$1.7M
- Jul 2021Grant (prize money)$3.8M
#5
Seed · Frankfurt, State of Hessen · founded 2021 · 9 employees$1.5Mraised▾
AI & SaaS-driven building diagnosis solution for buildings
- Apr 2022Seed$1.5M
#6
Series B · Kassel, State of Hessen · founded 2011 · 21 employees$3Mraised▾
Provider of specialized forecasting solutions for renewable energy integration and trading. The company offers services that enable more efficient management of energy resources. It delivers accurate predictions to support operational planning and decision-making. The focus is on improving the reliability and cost-effectiveness of energy systems.
- Dec 2014Series B—
- Apr 2012Series A$3M
#7
Funding Raised · Frankfurt, State of Hessen · founded 2006 · 12 employees$224.5Kraised▾
Developer of a P2P lending platform for energy efficiency projects. Every single crowd investor is a party to the loan contract with the project owner. The investor receives an annual payment, consisting of interest and repayment. The platform charges a commission based on the initial investment sum and an annual handling fee from the project owner.
- Jan 2016Grant (prize money)$107.2K
- Mar 2015Grant (prize money)$54.3K
- Jan 2014Grant (prize money)$63.1K
#8
Funding Raised · Kassel, State of Hessen · founded 2021—raised▾
Planning and modelling of grid networks
- May 2023Grant (prize money)—
#9
Funding Raised · Bad Vilbel, State of Hessen · founded 1999 · 7 employees—raised▾
Provider of carbon management, sustainability, and renewable energy solutions. The organization develops emission reduction and carbon removal projects. It offers consulting for sustainability, ESG strategy, and reporting. The company facilitates renewable energy procurement to reduce energy-related emissions.
- Jan 2022Unattributed—
#10
Deadpooled · Wohra, State of Hessen · founded 2012 · 5 employees—raised▾
Ventaleon is a German, clinical stage biotech developing inhaled antiviral treatments for respiratory viral infections. Ventaleon is a joint venture between Vectura and an investment syndicate, following the acquisition of Activaero by Vectura. Vectura owns 48% of Ventaleon. The lead candidate VR736 ( inhaled Lysine Acetylsalicylate Glycine), is being developed as an inhaled treatment for Severe Influenza in hospitalized patients. The proof of concept study was successfully finished in 2015.
- 2012Seed—
#11
Seed · Schwalbach am Taunus, State of Hessen · founded 2008 · 13 employees—raised▾
Energy management software provider. It provides an energy management software product. The software offered is called e-EMS which can be used for energy certification, pre-audits, risk management & recertification. Can also be used for prequalification, assessment, prioritization, summary, and approvals of energy efficiency projects.
- Nov 2009Seed—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Climate Adaptation is moving in Germany
A read on the academic research around Climate Adaptation — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 587 Germany-affiliated papers.
- Potsdam Institute for Climate Impact Research40
- Ludwig-Maximilians-Universität München30
- Technical University of Munich28
- GFZ Helmholtz Centre for Geosciences25
- University of Bonn23
- Climate change1→30
- Flood myth1→18
- Flooding (psychology)2→6
- Climate change10→69
- Flood myth17→43
- Resilience (materials science)5→22
- Psychological resilience4→18
- Climate resilience3→16
- Climate change14→144
- Flood myth12→47
- Vulnerability (computing)1→35
- Resilience (materials science)4→34
- Psychological resilience6→33
Where climate adaptation is researched across Germany
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.