For Climate Tech Startups

Sandbox Program: Climate Tech Startup Accelerator

Apply to our startup acceleration program and get ready to scale your climate solution

Are you a B2B climate tech startup with a significant climate impact, looking to get fundings and scale your solution?

Get connected with new business and funding opportunities through the Sandbox Program. We offer a free package of business training, networking and visibility.

Startups we scouted and assessed from 16+ EU countries
Startups we accelerated since April 2022
Investors & corporations who attended our demo days
Matching opportunities from committed counterparts

An accelerator program designed for Climate Tech Startups

Being an early stage startup in the climate innovation space is not that easy: from access to fundings, to regulatory barriers and go-to-market, many are the daily challenges to deal with.

The Sandbox Program is a free vertical program designed to meet the specific needs of early stage B2B Startups with a focus on Climate Impact.

As a participant in the Sandbox Program, you will get:

  • Expert mentorship from a network of entrepreneurs and professionals who are well-versed in the climate tech industry
  • Access to exclusive workshops on topics such as pitch deck, business development, climate impact communication, and fundraising strategy
  • Tailored feedback and guidance to help you optimize and refine your pitching skills
  • Opportunities to connect with international investors and clients interested in your solution
  • Possibility of direct investment by Forest Valley
  • Free promotion helping you reach a wider audience and attract potential clients and investors.

how is the sandbox program structured?

Every year we run 4 editions of the Sandbox Program, accepting 8-10 startups for each batch.
A Technical Board of industry experts and professionals is responsible for evaluating your application, looking at how your solution addresses the climate impact of industrial supply chains and what is its potential at scale.

We are always accepting applications, if you are not selected for one edition, you can still apply for the next round.





Ready to join the sandbox
accelerator program?

Apply now to join our next batch and start accelerating your growth!

Apply Here
By filling up this form, you will be redirected to an Application Form, required to access the Sandbox Program.

Meet the mentors and
the technical board

What they say about us


Meet the startups who joined the sandbox program

Alternative Proteins

A plant-based, sushi-grade raw seafood alternative

Energy Efficiency

Waste heat-capturing technology geared to decarbonise cooling and the cold chain

Risk Mitigation

A weather risk management platform limiting construction companies' climate cost


A financing platform that streamlines the energy-efficiency improvement of homes

Renewable Energy and Infrastructure

An interactive visualisation tool to streamline energy transition developments


A data-driven service to decarbonise and de-risk residential properties

Blue Economy

Air-based technology to remove oil and plastic pollution in the seabed

Discover all the startups

Program Main Partner

Perks Partners

Our Investors and Partners

Ready to take your startup to the next level?