100+ Accelerator seeks companies that create products and goods that optimize water use, decarbonize value chains, help farmers produce sustainable and regenerative crops, and/or protect, renew, and grow the biodiversity of all ecosystems to sustain life on Earth. The Accelerator delivers 6 months of remote training to accelerate the collaboration and growth of cohort companies. Participants have access to mentor networks and may receive up to US$100 thousand toward pilot execution. The challenge has an open deadline. Action Challenges
water
Orange Telecom — Tech Entrepreneurship Program
The Orange Summer Challenge 2025 (OSC25) is a tech entrepreneurship program designed to support innovative startups that combine hardware and software solutions with strong social or environmental impact. OSC25 offers participants technical and human support to develop their technological solutions. Winners of the international competition will receive financial support for incubation and other costs related to the development of their solution. Applications are open until 15 June 2025. Know more
Posterheroes — International Contest about Social and Environmental Issues
Submissions are open for the Posterheroes contest that calls for posters about social and environmental issues. Posterheroes invites students, professional designers, and everyone who is into graphic design to create a poster. Participants can win a cash prize of up to US$2,500. The submission deadline is 22 August 2025. Link to the contest
German Federal Ministry of Education and Research — Digital Green Talents Award
The German Federal Ministry of Education and Research (BMBF) recognizes young researchers worldwide working at the intersection of digitalization and sustainability. Awardees receive a fully funded three-month research stay in Germany in 2026, participate in a one-week SpringSchool, and join a global alumni network. Eligible applicants are Master’s students in their final year or current PhD candidates (or recent graduates within three months), under 30 years old, with strong academic records. Past winners include many in renewable energy, water management, and environmental engineering. The deadline is 06 June 2025. Green Talents
Prince Albert II Foundation — Call for Projects 2025
The Prince Albert II Foundation is dedicated to the protection of the environment and the promotion of sustainable development on a global scale. Currently, the Foundation calls for projects in 4 thematic areas: forest conservation through local and indigenous action; strengthening arctic and antarctic marine protected areas; coastal and marine solutions; and other projects that relate to climate change, biodiversity, or water preservation. The application closes on 30 June 2025. More information
iF International Forum Design GmbH — Social Impact Prize
The iF Social Impact Prize aims to publish and support design projects that contribute to solving urgent challenges and help to improve living conditions in the developing world. Solutions should already be established and help to solve well-known issues in any category of the UN Sustainable Development Goals. The best projects will share a cash prize of €100 thousand in total. Eligibility extends to non-profit organizations, companies, and foundations (student concepts will not be accepted). The application deadline is 01 September 2025. iF Social Impact Prize
Asia Foundation — Grants for Environment and Development
The Asia Foundation makes grants in a wide variety of program areas, including the Environment. Thematic interests in the environment include natural resource management and use; water resource management and transboundary water sharing; climate change adaptation and resilience; disaster preparedness and risk reduction; urban environmental issues; and women and the environment. The Foundation makes most of its grants to organizations based in the Asia-Pacific region. Letters of inquiry may be submitted at any time. Find details
YMCA Network Solutions — Youth Empowerment Fund
The YMCA Network Solutions Youth Empowerment Fund is a grant opportunity designed to support youth-led initiatives that address local challenges and advance the Sustainable Development Goals. The grant is open to YMCA National Movements and their local associations in countries eligible. Grants of €10 thousand to €20 thousand are available for national projects, and up to €30 thousand for multi-country collaborations involving at least three countries. Applications close on 18 May 2025. Link to more information
Canada Fund for Local Initiatives — Community Projects in the Caribbean Islands
The Canada Fund for Local Initiatives invites proposals that meet the needs of local communities in Dominica, Grenada, Saint Lucia, St. Vincent and the Grenadines. The priorities under this call include women’s economic rights, decent jobs and entrepreneurship, and investing in the poorest and most vulnerable (which may include agriculture or aquaculture projects), as well as environment, climate action focusing on adaptation and mitigation, and water management. Project funding is up to C$50 thousand. Eligibility extends to local community organizations, non-profit organizations, and academic institutions. The deadline for submission is 28 May 2025. CFLI Caribbean Islands
Canada Fund for Local Initiatives — Community Projects in Pakistan
The Canada Fund for Local Initiatives invites proposals that meet the needs of local communities in Pakistan. The priorities under this call include one on environment and climate action focusing on adaptation and mitigation, as well as on water management. The average contribution is C$30 thousand per project. Eligibility extends to local community organizations, non-profit organizations, and academic institutions. The deadline for submission is 30 May 2025. Click here