The Community Self-Determination grant program invests in the self-determination of Indigenous people working in their community. Applicants are encouraged to describe their community self-determination efforts within one of the following strategic focus areas that are best suited for their intentions and goals (e.g., climate justice work, clean energy initiatives, access to clean water, etc.). Grants of US$20 thousand per year, with a commitment of two years. The geographical focus is Turtle Island (Island Nations of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, the U.S. Virgin Islands, as well as Canada and Mexico). Applications close on 17 October 2025. Community Action Fund
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MDPI — Water Travel Award 2026
MDPI, a publisher of peer-reviewed, open-access journals, invites applications for the 2025 Water Travel Awards. Three awards of CHF 800 each will go to junior scientists to present an oral presentation and/or poster at an international conference in 2026. Applicants must be postdoctoral researchers or Ph.D. students working in the field of water or related areas. Applications have to be submitted by 31 October 2025. Click here
MDPI — Sustainability Young Investigator Award 2025
MDPI, a publisher of peer-reviewed, open-access journals, invites applications and nominations for the Sustainability 2025 Young Investigator Award. The winner will receive CHF 2000. This prize will be given to one young investigator in recognition of their excellence in the field of sustainability and sustainable development. Candidates must be under 35 years and be nominated by senior researchers. The deadline for nominations is 15 December 2025. More information
MDPI — Sustainability Travel Awards 2026
MDPI, a publisher of peer-reviewed, open-access journals, grants travel awards to 5 junior scientists. The award provides financial support to attend an international conference in the field of sustainability and sustainable development, to be held in 2026. Candidates must be postdoctoral fellows or PhD students. The winners will each be awarded CHF 600 and a certificate. Applications have to be submitted by 31 December 2025. Sustainability Travel Awards
AJA Foundation — Water Grants
AJA Foundation supports projects that provide access to clean water. AJA Foundation has a particular commitment to providing renewable clean water in rural African villages. There is no geographical restriction on where projects might be located. Funding ranges from US$2500 to US$500 thousand. The Foundation accepts LOIs on a rolling basis. Details here
100+ Accelerator — Sustainable Action Challenges
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
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