The International Renewable Energy Agency (IRENA) invites applications for the fourth cohort of its NewGen Renewable Energy Accelerator, a program designed to support young entrepreneurs driving the global energy transition. The initiative provides youth-led start-ups and growth-stage businesses with four months of technical mentorship, business model consolidation, and access to investment matchmaking. Eligible applicants must be between 18 and 35 years old and working on innovative solutions in renewable energy, climate adaptation, or climate mitigation. While the program does not provide a direct cash grant, participants compete for the IRENA Rising Stars Award and gain access to IRENA-backed financing platforms such as the Energy Transition Accelerator Financing (ETAF) facility. The deadline for applications is 03 May 2026. Renewable Energy Accelerator
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Orange Telecom — Orange Social Venture Prize 2026
The Orange Social Venture Prize (OSVP) supports entrepreneurs using technology to drive social and environmental change across Africa and the Middle East. Orange invites tech-based startups and individuals to apply if their projects address local needs in fields such as health, education, agriculture, or sustainable development. Applicants must be at least 21 years old and based in one of the 17 participating countries, including Botswana, Egypt, Morocco, and Senegal. The competition features a national stage followed by an international grand prix, where three winners receive prizes of €25 thousand, €15 thousand, and €10 thousand respectively, alongside an additional €20 thousand International Women’s Prize for projects supporting women’s empowerment. The deadline for applications is 10 May 2026. Social Venture Prize
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
Critical Ecosystem Partnership Fund — Large Grants for the Cerrado
The Critical Ecosystem Partnership Fund (CEPF) invites civil society organizations to submit letters of inquiry (LOIs) for large grants to support biodiversity conservation in the Cerrado hotspot in Brazil. This call targets projects that align with the investment priorities detailed in the regional ecosystem profile. Grants are available for amounts exceeding US$50 thousand. The deadline for letters of inquiry is 19 April 2026. Link
Skål International — Sustainable Tourism Awards 2026
Skål International announces the call for submission to its 2025 Sustainable Tourism Awards. The idea is to enhance visibility and get recognition of outstanding performance in terms of sustainable and responsible tourism from all over the world. Companies, NGOs, government agencies, and educational institutions worldwide are welcome to submit an entry in one of nine available categories, including ‘Countryside and Biodiversity’ and ‘Marine and Coastal’. Applications close on 31 May 2026. Find the guidelines
TiE WOMEN — Support for Female Entrepreneurs
The TiE Women Program offers women founders the chance to showcase their innovative business ideas. Female-founded startups and established businesses gain visibility, network with industry leaders & investors, and access mentorship. Participants receive up to US$50 thousand equity-free cash prizes. This opportunity is open to women entrepreneurs across the globe. The application deadline is 10 June 2026. TiE Women Program
Global Green Growth Institute — Sustainable and Inclusive Growth
The Global Green Growth Institute invites applications for the sixth call of the BIMP-EAGA–Republic of Korea Cooperation Fund, which supports projects that drive green growth and inclusive development. The program focuses on four priority sectors: environment, connectivity, tourism, and agriculture and fisheries. Eligible applicants include government agencies, public institutions, academic and research institutes, non-governmental organizations, and private sector entities based in South Korea or the BIMP-EAGA region (Brunei Darussalam, Indonesia, Malaysia, and the Philippines). Grant amounts range from a minimum of US$100 thousand for one-year projects to a maximum of US$500 thousand for two-year engagements, while multi-country projects may receive up to US$250 thousand per country. The deadline for applications is 27 March 2026. Link
Katapult — Africa Accelerator
Katapult manages an accelerator program designed to support impact-driven startups in Africa focusing on agritech, foodtech, and climate tech. The program is open to African startups that demonstrate high scalability and positive environmental or social impact in sectors such as clean energy, circular economy, and sustainable agriculture. Katapult invests between US$150 thousand and US$500 thousand in each participating company in exchange for equity, while charging a program fee to cover the costs of the three-month intensive training. Selected founders receive hands-on mentorship, investor readiness training, and the opportunity to pitch to global impact investors during a dedicated investor day. Applications are accepted until 25 April 2026. Africa Accelerator
United Nations Development Program — Incubation Program for AgriTech Startups
The United Nations Development Programme (UNDP) invites applications for its Pan-African Incubation Network. The program is open to startups based in Africa or those developing technology-driven solutions for African agricultural markets, provided they have a committed team and at least a working prototype or minimum viable product. While the announcement does not specify a direct cash grant amount, participants receive structured incubation support, mentorship, and access to a continental network of investors and ecosystem partners to improve investment readiness. The program operates through quarterly cohorts, and the deadline for the current application cycle is 27 April 2026. Details here
Toilet Board Coalition — Virtual Program
The Toilet Board Coalition invites applications for its Accelerator Program, which supports small and medium-sized enterprises developing sanitation and hygiene solutions. The program provides business mentorship, strategic coaching, and access to a network of investors to help businesses scale their impact in the circular sanitation economy. Eligible applicants must be registered for-profit SMEs operating in Sub-Saharan Africa, South Asia, or Southeast Asia. While the program does not provide direct grant funding, it facilitates connections to potential investors and partners to help secure financing. The application deadline is 30 April 2026. Know more