The Absorption Gap: Why Institutional Readiness, Not Capital, Is the Binding Constraint on Water Finance in Latin America

A new policy brief from Convergence Advisory introduces a diagnostic framework for closing the gap between climate finance commitments and durable water service delivery.

Alvarez Murillo, Isabel, The Absorption Gap: An Institutional Readiness Lens for Climate-Resilient Water Finance in Latin America (March 20, 2026). Available at SSRN: https://ssrn.com/abstract=6537358 or http://dx.doi.org/10.2139/ssrn.6537358

© 2026 Convergence Advisory. All rights reserved. The Absorption Gap Framework and all associated analytical content are the proprietary intellectual property of Convergence Advisory. No part of this document may be reproduced, adapted, or distributed without prior written authorization from the author.

INTRO

In 2022, developed countries mobilized a record USD 115.9 billion in international climate finance. In the same period, 72 million people across Latin America and the Caribbean still lacked access to safely managed sanitation. Water infrastructure in urban areas continued to deteriorate. Utilities across the region struggled to cover their own operating costs.

The capital is moving. The outcomes are not keeping pace.

This is what we call the Absorption Gap.

WHAT IS THE ABSORPTION GAP?

The Absorption Gap is the distance between a financing commitment and a durable service delivery outcome. It is not a funding concept. It is a governance one.

The term builds on decades of development economics research into why external capital does not always produce the results it is designed to achieve. In the water sector, this gap has a particular character: the institutions expected to receive, deploy, and sustain capital investment are often structurally unprepared to do so. Not because of bad intentions or weak management, but because the conditions for absorption have not been put in place before the money arrives. Those conditions include regulatory clarity, institutional coordination, fiscal readiness, cost recovery, and accountability.

The result is a pattern that anyone working in development finance will recognize. Infrastructure is built and then deteriorates within years of construction. Budget execution rates in the water sector average 72% globally, compared with 99% in health and education. Fewer than half of assessed utilities in Latin America and the Caribbean achieve operating cost recovery ratios above 1.0x. Utilities that cannot cover their own running costs cannot sustain what international financing builds for them.

The architecture of climate finance has not fully caught up with this reality. Blended finance facilities, green bonds, and concessional loan windows are all oriented toward mobilizing capital. The question of whether recipient institutions can absorb, deploy, and sustain that capital receives comparatively less analytical attention and far less funding.

A FIVE-DIMENSION DIAGNOSTIC FRAMEWORK

The policy brief introduces a structured framework for diagnosing absorption capacity before capital is deployed. It identifies five dimensions that, individually or in combination, determine whether a water system can translate a financing commitment into lasting service delivery outcomes.

1. Regulatory clarity. Are the rules clear enough for investors and operators to act? Fragmented legislation and overlapping mandates create uncertainty that limits capital entry and undermines contract enforceability.

2. Inter-institutional coordination. Are water, finance, and climate ministries aligned around shared investment objectives? Siloed mandates produce conflicting incentives and prevent climate commitments from connecting to sector investment plans.

3. Fiscal and O&M readiness. Can municipalities sustain what development banks build? Capacity gaps at the local level are directly associated with infrastructure deterioration following the end of PPP operational periods or project implementation phases.

4. Tariff and revenue viability. Is cost recovery designed into the system from the start? Politically constrained tariff-setting, low collection efficiency, and absent cross-subsidy mechanisms are not just financial problems. They are political economy challenges that require a different kind of sequencing.

5. Political and data accountability. Are subsidies constrained by evidence? Is performance data publicly accessible? Short electoral cycles and data opacity together reduce the incentive and capacity for long-term planning and institutional continuity.

Where any one of these dimensions is absent, capital deployment tends to produce infrastructure without services. Where several are absent simultaneously, which is common across the region, the failures reinforce each other in ways that are difficult to reverse without deliberate reform.

COUNTRY DIAGNOSTICS: FOUR DIFFERENT ENTRY POINTS

The brief applies this framework to Bolivia, Colombia, Peru, and Mexico. Each country presents a distinct primary absorption constraint, which maps to a different institutional entry point and a different recommended sequencing of governance investment.

In Bolivia, the dominant constraint is the constitutional embedding of water as a human right following the 2000 Cochabamba Water War. Tariff reform in this context is not primarily a financial challenge. It is a legitimacy challenge. The recommended sequencing prioritizes participatory willingness-to-pay assessments and political legitimation processes before any infrastructure financing is considered.

In Colombia, the primary gap is inter-institutional coordination. Independent tariff regulation exists and functions reasonably well. The constraint is the structural disconnect between the Sistema General de Participaciones fiscal transfers, the CRA regulatory framework, and climate NDC commitments: three systems operating without a shared planning framework. Conditioning PPP financing on a funded coordination mechanism as a disbursement milestone is the recommended entry point.

In Peru, persistent underfunding of the water regulator SUNASS and chronic budget execution deficits, averaging approximately 60% in recent years, define the absorption constraint. The brief argues for treating SUNASS budget stabilization as a prerequisite investment, not a background assumption, before larger IFI instruments are deployed.

In Mexico, the challenge is constitutional in structure. The Ley de Aguas Nacionales creates a jurisdictional split between federal concession rights and municipal service delivery responsibility, resulting in 31 distinct state-level regulatory frameworks with no federal counterpart. Without multi-decade governance frameworks and independent regulatory bodies insulated from three-year municipal election cycles, infrastructure financing and PPP structures are unlikely to produce durable outcomes.

WHAT THIS MEANS FOR PROGRAM DESIGN

The brief identifies four recurring patterns in how development finance approaches water resilience in the region and where program design tends to fall short.

Capital mobilization consistently outpaces institutional readiness. Governance reform components represent a small fraction of blended finance flows relative to infrastructure instruments, despite being a prerequisite for those instruments to function.

Tariff reform is too often framed as a financial optimization problem rather than a political economy sequencing challenge. Technically correct tariff structures imposed without political legitimacy tend to be reversed under electoral pressure. Investing in participatory legitimation processes, including willingness-to-pay assessments and transparent tariff-setting mechanisms, tends to make reform more durable.

PPP contracting is frequently separated from O&M capacity development. When operational responsibility transfers to municipal entities, the governance transition is often treated as an administrative formality rather than a capacity investment requiring dedicated support and funding.

Utility creditworthiness is treated as a barrier to financing rather than as a diagnostic signal. A utility that cannot access commercial financing is likely carrying absorption gaps that would benefit from targeted financial restructuring and regulatory support before larger instruments are deployed.

The brief proposes a differentiated instrument-selection framework based on utility financial state, distinguishing pre-viability, transitional, and commercially viable stages, with specific recommendations for what financing tools are appropriate at each stage.

THE CORE ARGUMENT

Capital deployed without institutional readiness does not produce resilience. It produces infrastructure without services, commitments without continuity, and financing without impact.

The Absorption Gap is not inevitable. Each of the five dimensions can be addressed through deliberate sequencing of governance investment before capital deployment. The diagnostic framework presented in this brief is designed to help donors, development banks, and national governments identify where the gaps are most acute, sequence their interventions accordingly, and design financing conditions that build institutional capacity as a prerequisite rather than an afterthought.

If you're working on water governance or climate financing in LAC and want to discuss the implications, I welcome the conversation: isabel.alvarezmurillo@convergenceadvisory.ca.

The brief is also available in Spanish.