Belém will be the showcase for Brazil to turn climate commitments into concrete projects and investments
In November, Belém do Pará will host COP30, a conference marked by its ambition to turn climate commitments into concrete execution. Brazil arrives at the meeting with an obvious paradox: although it is an environmental and energy powerhouse, it invests little in infrastructure – and the little it invests does not cover the depreciation of its fixed capital. The result is visible in fragile networks, recurring floods and the rising cost of insurance. Ultimately, sustainability has not been turned into business value – and that requires projects structured with risk, return and resilience metrics that speak the language of governments, public banks and investors.
COP30 is billed as “the implementation conference”. Its thematic pillars, especially infrastructure, cities, adaptation and water, reflect this practical agenda. In this context, the legacy of the 2025 Nobel laureates in Economics – Joel Mokyr, Philippe Aghion and Peter Howitt – gains prominence: by highlighting how innovation, competition and technological renewal drive sustainable growth, they offer a critical framework for rethinking infrastructure. Investing is not just about building more – it is about replacing what is outdated, adapting to the climate, digitalizing, modularizing and, above all, institutionalizing the capacity for change.
Cities account for 80% of resource consumption and a large share of emissions — which makes them both the problem and the solution. In the Brazilian context, drainage, slope stabilization, mobility, energy and sanitation can no longer be treated separately, but as an interconnected system. The country invests little in resilient infrastructure; often, projects do not even consider extreme events — heavy rains, severe winds, flooding. Prevention — through hydrological studies, routes outside risk areas, elevated networks, redundancies and operating protocols — costs more at first, but results in substantial savings in the long run.
This higher initial cost substantially improves the risk-benefit profile: it avoids the endless cycle of destruction and reconstruction. It is exactly this kind of transition — removing obsolete structures to make way for new ones — that the 2025 laureates’ concept of “creative destruction” refers to. And this transition only happens if there is effective regulation, markets capable of pricing risk, institutions that foster innovation and financial mechanisms that connect the public sector, the private sector and development banks.
The scale of the challenge requires a regional approach, not just a municipal one. River basins, metropolitan conurbations and intermunicipal mobility arrangements go beyond traditional administrative boundaries. Consortia between municipalities, clear governance, a project pipeline and access to national and international financing make economies of scale and efficiency gains possible. In this framework, public banks such as BNDES (the Brazilian Development Bank) and Caixa Econômica Federal should play a catalytic role: structuring guarantees, offering blending instruments, mitigating regulatory and demand risks and creating long-term green credit lines.
The sanitation sector offers a concrete window: in view of the universal service targets for 2033, the real agenda is urban water security — modernizing networks, integrating them with drainage, protecting water intakes and anticipating extreme events. In mass transit, criteria for location, materials, pumping systems and contracts must reflect the new climate reality. This is not “technical luxury”, but risk management and good governance.
None of these transformations can move forward without integration between the market, government and public banks. The government sets targets, regulates and prioritizes; banks structure and finance; the market delivers engineering, governance and operational efficiency. When this tripod works, PPPs and concessions stop being shortcuts and become consistent public policy instruments. When it fails, amendments, lawsuits, stalled works or, worse, avoidable tragedies follow.
For COP30, the focus must be on narrowing the gap between promise and delivery. Some measures are within immediate reach: standardizing climate clauses in infrastructure contracts; creating regional guarantee funds; expanding green credit lines with performance-linked interest rates; accelerating green bond certifications; integrating parametric insurance; and professionalizing the structuring phase, when 80% of success or failure is determined.
The Nobel laureates draw attention to a simple truth: innovating is costly, but not innovating costs much more. In a continental and heterogeneous country like Brazil, investing in resilient infrastructure also means reducing inequality – because climate disasters hit the most vulnerable first and hardest. In this sense, sustainability ceases to be a mere reputational adjective and becomes a criterion of intertemporal efficiency: protecting assets, people and the environment while generating long-term value. Belém will be the test – and the showcase – of this ambition. If the conference succeeds in bringing the language of climate closer to the language of investment, turning targets into projects and projects into bankable contracts, the country may leave with more than declarations: it may launch a modernization cycle with a technical, financial and social foundation. Ultimately, resilient infrastructure is the practical translation of the economic theory the Nobel laureates developed and the concrete proof that sustainable growth stems from institutions that reward innovation and execution. The bill, as always, awaits us at the next flood.
