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The Great Blue Wall (GBW) is a proposed regional programme for the Western Indian Ocean (WIO) designed to create a network of regenerative seascapes. Led by the IUCN and targeting nine countries, the initiative seeks to combine nature-based solutions with innovative financing to protect critical blue ecosystems—such as mangroves, seagrasses, and coral reefs—while fostering a regenerative blue economy. The programme requests USD 200 million from the Green Climate Fund (GCF), with an additional USD 100 million in co-financing, to implement a four-component strategy focusing on policy frameworks, market development, capital flow acceleration, and regional coordination. Key goals by 2031 include the protection of 2 million km² of the ocean in the WIO and the creation of 2 million jobs.

The LGCC3 project seeks $10 million in GCF grants to scale up the Local Climate Adaptive Living (LoCAL) model in 15 vulnerable Cambodian districts. The project focuses on strengthening the capacity of sub-national administrations to integrate climate science into planning and budgeting, utilizing a Performance-Based Climate Resilience Grant (PBCRG) mechanism to fund local adaptation investments in infrastructure, livelihoods, and ecosystem services.

The document advocates for Robust Decision Making (RDM) to manage climate uncertainty in water sector investments. It proposes a screening process to categorize investments into no/low regret, climate change risky, and climate change justified options, prioritizing those that provide benefits regardless of the climate scenario. It emphasizes addressing the 'adaptation deficit'—the backlog of investments needed to protect against existing climatic fluctuations—and suggests using sensitivity analysis and benefit-cost appraisals to refine development portfolios.

The document outlines a comprehensive investment framework for the Green Climate Fund, detailing six primary investment criteria: impact potential, paradigm shift potential, sustainable development potential, needs of the beneficiaries, country ownership, and efficiency and effectiveness. For each criterion, it specifies activity-specific sub-criteria and indicative assessment factors, including quantitative indicators for mitigation (such as tCO2eq reduced) and adaptation (such as number of beneficiaries). The framework emphasizes the need for proposals to demonstrate climate resilience, gender equality, and the ability to catalyze further investment or replicate successful models across different regions and sectors.