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The report estimates that the U.S. requires $5.6 trillion in investment through 2035 across GGRF priority categories, with 31% needed in low-income and disadvantaged communities (LIDCs). It identifies significant gaps between current climate finance flows and these needs, citing barriers such as lack of lender capacity, low homeownership rates in minority communities, and distrust of external developers. The authors argue that the GGRF must act as a catalyst for private capital and recommend that philanthropic foundations provide early-stage technical assistance and funding for complementary services, such as home remediation, to ensure the fund's success.

The report identifies barriers to private urban climate investments across macro, city, and project levels, while highlighting success factors such as supportive regulatory frameworks and transparent working practices. It provides targeted recommendations for city governments, national governments, international finance institutions, and private/third sector partners to enhance project preparation, risk mitigation, and capacity development to enable bankable climate investments in emerging economies.

Methane mitigation is severely underfunded, with current annual spending at only 10% of the $119 billion required to keep global warming below 2 degrees Celsius. The report identifies structural barriers, including a lack of donor prioritization, absence of dedicated funding windows, and a shortage of bankable project pipelines in developing countries. It recommends that development finance institutions designate methane 'champions', that donor governments increase funding for project preparation, and that developing nations create enabling policy environments to attract private investment.

The report identifies barriers to private urban climate investment across macro, city, and project levels, and provides recommendations for city governments, public sector partners, and private/third sector entities to improve enabling conditions. It analyzes five case studies from Chile, Ecuador, India, South Africa, and Turkiye to highlight success factors such as bulk procurement, green bonds, and strategic partnerships.

The project aims to reduce GHG emissions in Brazil's municipal solid waste (MSW) sector by supporting up to 30 municipalities or consortia in implementing low-emission treatment infrastructure. With a total indicative cost of USD 50 million (USD 15 million requested from the GCF), the initiative focuses on biogas recovery, anaerobic digestion, and the formalization of waste pickers. It seeks to transition from uncontrolled landfills to sustainable systems, targeting a mitigation impact of 45,352,640 tCO2e over a 15-year lifespan. The project will provide technical assistance for public-private partnerships (PPPs), develop legal roadmaps, and implement awareness campaigns to promote a circular economy.

The document identifies critical gaps in the support system for Local Green Entrepreneurs (LGEs) in South Africa, specifically highlighting that while SMMEs contribute to carbon reduction, they face significant 'green funding gaps'. It argues that current policies, such as the Draft SMME and Cooperative Funding Policy, fail to explicitly recognize LGEs. The brief identifies five 'signature issues', including the limited risk appetite of funders and compliance-driven ESG requirements. To address these, it recommends the development of a Green Economy Framework, the use of credit guarantee schemes like the sefa Innovation Fund, and the reduction of bureaucratic 'red tape' in certification processes to foster a more inclusive green recovery.

The report identifies subnational pension funds as a significant source of untapped capital for urban climate action, estimating at least USD 9.5 trillion in assets across Brazil, Canada, Germany, the Netherlands, South Africa, the UK, and the US. It details structural barriers such as low risk appetite and limited fund size, as well as external barriers like a lack of bankable project pipelines and ticket size mismatches. To overcome these, the document recommends the use of financial instruments such as blended finance, green bonds, and supply-side aggregation (pooling), while urging funds to make net zero commitments and build internal capacity.

Africa's annual climate finance needs are estimated at USD 250 billion, yet only USD 29.5 billion was mobilized in 2020. The report identifies critical barriers—financial, governance, project-level, and infrastructure-related—across the energy, transport, buildings, and AFOLU sectors. It argues that bridging this gap requires shifting from traditional grants and concessional debt toward innovative structures like YieldCos, Green Bonds, and blended finance to 'crowd-in' private capital. The document provides a toolbox for matching specific instruments to barriers and highlights four case studies: TerraFund for AFR100, the Sub-National Climate Finance Initiative, Acorn's green housing ecosystem, and the Revego Africa Energy Fund.

Public international finance dominates Indonesia's blue finance, while commercial banks are the primary private sources. MSMEs, particularly in the fisheries sector, face significant barriers to accessing formal credit due to physical collateral requirements and a lack of credit history. While most MSME loans are concentrated in Java, the highest growth is observed in the Lesser Sunda Islands. The report recommends reducing entry barriers, investing in human capacity, and improving infrastructure to spur private investment in the blue economy.

The report examines the intersection of private market capital and municipal sustainability efforts in Sweden, noting that while capital access is not currently a primary constraint, systemic barriers hinder the transition.

The document examines the challenges ride-hailing drivers face when switching to electric vehicles in the US, Europe, and Canada, noting that EV adoption in this sector often lags behind the general vehicle stock. It proposes targeted interventions, including reducing up-front costs, expanding affordable charging infrastructure for renters and low-income communities, and improving driver education. The research utilizes data from Uber and a WRI methodology to evaluate 10 cities via scorecards.

The document argues that while businesses recognize the benefits of circular economy practices, they are hindered by systemic technical, knowledge, and financial barriers. It identifies information availability and government support as primary drivers for transition, particularly for SMEs in Southeast Asia.

The report finds that while Swedish development practitioners value research, they struggle to find and implement it due to time constraints and a communication mismatch with researchers. It recommends bridging this gap through co-creation, better communication formats, and institutionalized networks.

The report identifies five key Water-Smart Agriculture (WSA) innovation clusters in South Africa: irrigation systems, smart farming, undercover farming, sustainable practices, and drought-tolerant crops. While commercial farms have adopted many of these technologies due to economies of scale, adoption remains low among smallholder and emerging farmers. The analysis estimates significant market sizes for high-tech greenhouses (R11.78 billion) and no-till machinery (R4.48 billion), while identifying remote sensing services as a high-growth area. Major barriers include high upfront costs, limited technical skills, and an unfriendly regulatory environment. The report recommends developing innovative financing models, increasing farmer awareness, and strengthening government support through tax rebates and policy integration.

The report identifies significant energy and emission reduction potentials through the adoption of 'Green ACs' in public buildings, while highlighting financial, political, and technical barriers that hinder the implementation of Green Public Procurement.

The analysis identifies significant potential for hydrogen adoption in Estonia's transport, industrial, energy, and building sectors. Under an ambitious scenario by 2050, Estonia could avoid 2.2 to 4.4 million tonnes of CO2 emissions and create up to 42,432 jobs, requiring total investments between 22.4 and 44.7 billion euros. The report highlights shipping and rail transport as high-potential areas due to technology maturity and high energy demand, while suggesting that ammonia and methanol production could turn Estonia from an importer to an exporter. Achieving these goals would require substantial increases in renewable electricity capacity, potentially doubling current demand projections, and a comprehensive national hydrogen strategy to coordinate regulatory and financial support.

The report identifies significant barriers to digitising cash transfers in Nigeria, including regulatory restrictions on agent e-float, low recipient digital literacy, and a lack of economic incentive for financial service providers (FSPs) to serve poor, rural populations. While mobile phone penetration is relatively high, most recipients use basic feature phones and prefer cash due to ease of access and lack of network reliability. The document proposes segmenting recipients by 'digital payment readiness' and digitising community savings groups as entry points for financial inclusion. It also highlights the inefficiency of current 'virtual accounts' that require 100% cash-out, arguing for a transition toward permanent digital wallets and merchant payment systems to reduce liquidity burdens and fraud.

The report identifies that most humanitarian and social protection cash transfers in Nigeria are delivered as physical cash due to a bank-led market and a lack of robust digital financial service (DFS) ecosystems. Key barriers include restrictive agent e-float limits set by the Central Bank of Nigeria (CBN), low recipient digital literacy, and a lack of economic incentive for financial service providers (FSPs) to maintain permanent accounts for poor recipients. The document recommends segmenting beneficiaries by digital readiness, strengthening foundational identity through National Identification Number (NIN) registration, and digitising merchant payments to reduce the liquidity burden of cash disbursements.

The document identifies systemic barriers to nature-positive infrastructure, including a lack of decision-relevant biodiversity data, limited technical capacity among engineers, and financial models that prioritize short-term returns over long-term ecosystem benefits. It argues for a paradigm shift toward nature-based solutions (NbS) and ecological connectivity, recommending the adoption of standardized metrics like the European Taxonomy and the Task Force for Nature-Related Disclosure (TNFD). The report emphasizes that 'upstream' policy and spatial planning are the most effective levers for change, urging governments to redirect COVID-19 recovery stimulus packages away from fossil-fuel reliant sectors toward sustainable, decarbonized infrastructure.

The report identifies a lack of demand for post-consumer recyclate (PCR) and poor packaging design as primary barriers to a circular plastics economy in South Africa. It highlights a fragmented value chain where brand owners and retailers hold the most influence but often prioritize cost and marketing over sustainability. The study emphasizes the need for mandatory extended producer responsibility (EPR) regulations to fund infrastructure, integrate informal waste collectors, and incentivize the shift from virgin polymers to recycled content.