Connect with top-tier experts in forestry, climate tech, impact investing, startup scaling, and digital transformation. With specialists from Future Forest Initiative, the August-Wilhelm Scheer Institute and our network, you’ll receive real-world advice to drive your venture forward.
FUTURE GREENTECH CHALLENGE
SPECIAL CALL
This spring, alongside our regular Open Call, we’re introducing a dedicated track: the Future Greentech Challenge, a special edition of Batch #4 of the Future Forest Accelerator. In collaboration with the August-Wilhelm Scheer Institute and the Center for Digital Technologies (DIGIT) TU Clausthal, this program is tailored for startups leveraging digital technologies to revolutionize the protection, regeneration, and management of natural resources—driving industrial decarbonization and circularity. This 5-week intensive program helps cutting-edge Greentech startups refine their strategy, sharpen their pitch, and connect with the right partners and investors. If your startup is working at the intersection of digital innovation and natural resource sustainability, this is your chance to accelerate your impact.
Is Your Startup Driving the Future of Greentech?
- Does your startup develop AI-powered, remote sensing, or robotics solutions to monitor and restore ecosystems?
- Are you working on nature-based carbon capture and storage or smart technologies for more efficient resource management?
- Do you create next-generation materials that are bio-based, resource-efficient, and climate-neutral?
- Or are you innovating in circular economy solutions, tackling the reuse, recycling, and upcycling of natural raw materials?
🤔 Working on something different but still shaping the future of forest management and planetary health? Our Open Call is for you!
Challenge Partners
Who are we looking for?
We are looking for young startups (max. 5 years old) that are developing digital technologies for the protection, regeneration, management, and recycling of nature-based resources to drive industrial decarbonization.
Your Profile
- We are looking for startups developing digital technologies for the protection, regeneration, management, and recycling of nature-based resources to drive industrial decarbonization.
- Ideally, you should be a pre-seed or seed-stage startup that was founded less than 5 years ago with an existing business model and/or a prototype.
Eligibility Criteria
- Your startup is not older than 5 years
- Commitment to participate in the Green Castle Final Sprint (June 5-6) & the Future Forest Forum (September 4-6)
The Fine Print
- Travel & accommodation expenses will not be covered.
- Food and external expert costs are covered by the Future Forest Initiative.
- By applying, you consent to the use of photo and video recordings.


Why you should apply
🎤 Pitch & Storytelling Mastery
From virtual sessions to live rehearsals, we help you craft a compelling pitch that resonates with investors, partners, and customers.
🚀 Exclusive Access to Experts & Mentors
📍 Tailored Milestone Development
🌱 Zero Cost, Maximum Impact
We believe in accessible innovation. Our equity-free program ensures you receive the best resources without financial barriers.
Your Benefits
Empower founders, gain contacts!
✓ Coaching and 1:1 mentoring sessions with our team, partners and experts network.
✓ Offsite coworking with experts at Future Forest headquarters Blankenburg Castle.
✓ Strong and active alumni and partner network.
Prepare your next financing round! (Pre-Seed to Series A)
✓ Finance bootcamp with investors from our investor network.
✓ Matching events with leading investors in ths segment.
✓ Legal, ESG and tax support.
Product market fit via practical projects!
✓ 1:1 matching with leading industry representatives.
✓ Pitches at the Future Forest Forum and important industry events in Germany and Europe.
✓ Accompanied pilot projects with experienced corporate partners, organisations and research institutes in our real-world laboratory.
Let's take Greentech to the next level
and validate your innovation, prepare your go-to-market strategy, or get ready for the next investment round!
Your Path through the Program
01.
Applications close
30.03.2025
How to apply
1️⃣ Submit your application via this form by 30th of March 2025.
2️⃣ Prepare a challenge-based task and pitch your solution during the Virtual Selection Day on 10th of April 2025.
3️⃣ Selected startups xyzzy.
02.
Virtual Selection Day
11.04.2025
Pitching Time
- Pitch your solution to a panel of experts, partners, and stakeholders.
- Engage in challenge-based tasks to demonstrate your technology's potential.
- Receive personalized feedback and secure your spot in the program.
03.
Meet your Mentor (online)
29.04.2025
Start of Validation Sprint
Connect with top-tier experts in forestry, climate tech, impact investing, and startup scaling, and gain valuable insights tailored to your startup’s needs. Throughout the program, you’ll work closely with your mentors and the Future Forest Initiative team to define personalized milestones. You’ll also receive impulses from leading experts, helping you sharpen your strategy and make informed decisions—all in a fully online format.
04.
Green Castle Final Sprint @ Schloss Blankenburg
05.06.2025
End of Validation Sprint
Experience a high-energy gathering at Castle Blankenburg, where expert coaches work with you one-on-one to refine your strategy in a hands-on, dynamic setting. This event is designed to accelerate your progress with tailored guidance and interactive sessions. You'll not only sharpen your business model and market approach but also take part in a dedicated finance workshop, equipping you with the knowledge and tools to navigate funding opportunities with confidence.
05.
Demoday & Award @ Future Forest Forum
04.-06.09.2025
Showcase and Scale
06.
For Selected Teams: Individual Accelerator
05.06.2025 onwards
Tailored Growth & Execution
For the most promising startups, the journey doesn’t end after the sprint—it evolves. In our exclusive accelerator program, selected teams receive dedicated, hands-on support. You’ll work toward achieving the milestones defined during the validation sprint. Expect deep-dive strategy sessions, targeted introductions to key partners, and personalized guidance to refine your business model, secure funding, and gain traction in the market. This is where vision meets execution—customized to your startup’s unique path to success.
Some of the mentors of the Future Greentech Challenge

Prof. Dr. Andreas Rausch

Lucas von Fürstenberg

Dr. Holger Schmitz

Lars ten Bosch

Max Hempel

Dr. Daniel F. Tomowski
Your Startup Team

Wolf Goertz

Ellen Goel

Urs Liebau
Join the Future Greentech Challenge!
Success Stories
-
By participating in the Future Forest Initiative 2022 Accelerator, we were able to grow enormously - it was an absolute game changer for us. We still benefit greatly from this network today.
Michelle Spitzer
Founder eco:fibr -
We have now received EIP funding for our project in which we grow functional mushrooms in the forest. Thank you Future Forest Initiative for accompanying us to this great opportunity!
Jana Baltscheit
Founder Lykaia Nutrition
Q&A
❓What is the Future Forest Accelerator?
The Future Forest Accelerator is a structured program designed to help early-stage startups (max. 5 years old) in forestry, climate tech, and impact-driven innovation refine their strategy, sharpen their pitch, and connect with industry leaders, investors, and partners. The program includes a 5-week validation sprint, expert mentorship, and access to a high-profile network.
❓What can I expect during the Validation Sprint?
The 5-week sprint is an intensive period where you’ll work closely with mentors to define your business model, market approach, and funding strategy. It includes tailored guidance, peer exchange, and interactive workshops, all designed to prepare you for scaling and fundraising. Together, we will define milestones for your next steps.
❓Is the program remote or in person?
Most of the validation sprint is online, but we also host an in-person Final Sprint at Castle Blankenburg and offer the chance to showcase your startup at the Future Forest Forum.
❓What happens after the Validation Sprint?
Selected startups get the chance to enter our Individual Accelerator, where they receive tailored, ongoing support to implement the milestones set during the sprint, refine their market approach, and gain traction with partners and investors.
❓What is the difference between the Future Greentech Challenge and the Open Call?
- The Open Call is for a broad range of forestry, climate tech, and impact-driven startups.
- The Future Greentech Challenge specifically targets digital technologies and innovative solutions for nature-based resources and industrial decarbonization. It includes mentorship from experts at the August-Wilhelm Scheer Institute and a strong focus on digital transformation in the Greentech space.
❓Will I still be part of the broader Future Forest Accelerator if I join the Future Greentech Challenge?
Yes! Startups in the Future Greentech Challenge participate in the same structured Validation Sprint, alongside other startups from the Open Call. However, you’ll receive additional input and mentorship from the digitalization experts at the August-Wilhelm Scheer Institute.
❓Is the Future Greentech Challenge also remote?
Yes, most of the program is virtual, but selected startups will have in-person opportunities at the Green Castle Final Sprint and the Future Forest Forum.
Unsere Programme für eure Innovationen
Wir bieten im Rahmen des europaweit ersten Accelerators für Wald & Klima individuelle Programmformate an, in denen euch als Startup mit Wald- und Klimabezug, ein passgenauer Zugang zu Mentor:innen und Expert:innen, zu potentiellen Investor:innen sowie Umsetzungspartnern geboten wird. In unserem Accelerator-Programm #accelerate vernetzen wir euch mit Waldbesitzenden und relevanten Stakeholdern aus Unternehmen, Wissenschaft und Politik, begleiten und organisieren Pilotprojekte und initiieren strategische Partnerschaften für euren erfolgreichen Markeinstieg.
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Als reifere Startups unterstützen wir euch in unserem Programm #accelerate bei eurer Go-To-Market Strategie. Kern der Säule #accelerate ist ein mehrmonatiges Accelerator-Programm mit Präsenz- und Online-Formaten und dem Finale (Demo Day) beim Future Forest Forum auf dem beeindruckenden Schloss Blankenburg im Harz. Dafür stellen wir euch u.a. ein Netzwerk aus über 40 Mentor:innen zur Verfügung, das euch bei euren Milestones unterstützt, sowie attraktive Partner, mit denen ihr eure Lösungen optimieren könnt. Die Programmsprache ist größtenteils englisch, da sich #accelerate auch an internationale Startups aus ganz Europa richtet. Mehr Infos unten und hier im Flyer.
Unser Fokus
Der Fokus unseres #accelerate Programms liegt auf Impact-Startups aus dem Wald-, Holz- und ClimateTech-Umfeld, die eine unternehmerische Zielsetzung verfolgen. Wir unterstützen dabei insb. Startups der Pre-Seed und Seed-Stage mit einem vorhandenen Prototyp oder einem bestehendem Business Modell. Thematisch bewegen wir uns dabei in den 3 Säulen Smart Forestry (z.B. Robotik), Ecosystem Services (z.B. Stärkung der Biodiversität) und Climate Solutions (z.B. Agroforst & Bioecomomy).
Ablauf #accelerate 2023
Phase 1 - Bewerbung für den Validation-Sprint
Nach eurer Bewerbung für Batch#2 unseres Startup-Programms bis spät. 04.04.2023 werden wir bereits am 06. April eine Entscheidung treffen, welche Startups dieses Jahr dabei sein werden, und euch umgehend informieren. #accelerate ist in 2 Phasen aufgeteilt. In Sprint 1 validiert ihr mit Hilfe von Mentoren euere Innovation und qualifiziert euch für die Incubation-Phase. Werdet ihr dafür ausgewählt geht es in diversen Sessions mit unseren Partnern um die Entwicklung einer Go-to-market Strategie, konkrete Kooperationsprojekte oder Finanzierungsoptionen. Individuell nach eurem Bedarf.
Falls du nicht die passende Antwort auf deine Frage gefunden hast, schreib uns doch einfach an!