Capital is available but confidence is conditional

Investors are actively seeking climate-aligned opportunities and capital is available, but confidence is conditional upon clear project definitions, transparent monitoring, credible governance structures, professional financial and operations management, and predictable pipelines of investable projects (2). A single successful green bond does not guarantee long-term access to capital; rather, consistency in demonstrating that local governments can originate, structure, and report on local infrastructure projects reliably makes green finance routine rather than exceptional (2).

What do successful cities have in common?

Experiences from different regions show that green finance is shaped less by geography and more by institutional design and governance (2). In Kyoto, Japan, a green bond was issued with proceeds clearly earmarked for specific costed and scheduled projects, such as energy-efficient retrofits, district heating upgrades, and flood protection measures, which provided clarity and reduced perceived risk (3). In Hyogo Prefecture, Japan, 14 municipalities issued a joint bond to reach a meaningful scale, reducing borrowing costs, strengthening reporting standards, and improving access to long-term investors (3). In Sweden, Kommuninvest integrated green lending into standard operations supported by standardised reporting and clear eligibility criteria (3). In Cape Town, South Africa, blended finance used concessional capital to close early viability gaps, making commercial capital more accessible for water infrastructure and energy efficiency upgrades (3). These cities addressed constraints such as a tight fiscal space and high transaction costs through deliberate institutional strengthening, building clarity, scale, and credibility into their municipal and project financial architecture (3).

From ambition to an investible pipeline

Translating climate priorities into an investible pipeline requires internal coordination, bringing together treasury, sustainability, legal, and procurement functions to reduce fragmentation and build external confidence (4). Local governments benefit from preparing concise project briefs that define scope, costs, timelines, expected savings or revenue streams, impact metrics, and monitoring approaches to reduce due diligence time (4). Moving from single projects to a credible portfolio of projects, such as energy efficiency in public buildings or public transport upgrades, signals commitment (4). Projects can be submitted to the annual call of the Transformative Actions Program for project preparation support and investment (4). Where scale remains a barrier, strategic aggregation via joint issuance, regional pooled vehicles, or credit enhancement mechanisms can lower perceived risk and transaction costs (4). Finally, consistent, transparent, and standardised impact reporting lowers friction and signals long-term commitment (4).

Bridging ambition and capacity

To help cities strengthen the foundations of green finance, the ICLEI carbonn Climate Center Academy offers a five-week hybrid Green Finance Training programme (5). The programme begins with an in-person launch in Malmö, Sweden, followed by interactive virtual modules exploring governance frameworks, pooled financing models, blended finance structures, and project development tools (5). Cities that embed green finance within governance and strategy are better positioned to attract long-term capital, whereas those that rely on ad hoc initiatives struggle to scale (5).