The Economics of Cooling Access Under Rising Global Temperatures

Cooling access has emerged as one of the most consequential—and unequal—development challenges of the 21st century. As the report states, “1.01 billion people live at high risk from lack of access to cooling… with a further 2.83 billion at medium risk.” Rising temperatures, uneven technology diffusion, and widening affordability gaps are converging into a structural global vulnerability that affects productivity, mortality, and energy systems simultaneously.

The report documents four interlocking dynamics:

• A widening cooling-access gap, where household air‑conditioning penetration is projected to rise from 27% to 41% by 2050, yet 3.2–4.1 billion people will still lack AC despite living in heat‑exposed regions.

• Energy‑system strain, with cooling demand on track to triple by 2050, consuming as much electricity as China and India do today unless efficiency standards bend the curve.

• Productivity losses, with the ILO projecting 80 million full‑time‑equivalent jobs and US$2.4 trillion in output lost to heat stress by 2030—60% of which falls on agriculture.

• A severe adaptation‑finance shortfall, where developing countries need US$310–365B annually by 2035, but only US$26B was delivered in 2023.

To explain why cooling deprivation compounds so sharply, the report applies the Compound Vulnerability Multiplier—the interaction of the D‑Coefficient (absorptive capacity), P‑Integral (cumulative burden), and Exposure Density (population concentration in high‑wet‑bulb zones). As the report notes, cooling vulnerability is multiplicative: “low absorptive capacity and high cumulative burden compound each other rather than simply summing.”

The report then introduces the COOL Framework:

• Capacity — diffuse affordable cooling through financing innovation (e.g., Cooling‑as‑a‑Service).

• Optimize — modernize energy systems via efficiency standards, demand response, and refrigerant transition.

• Output — protect labor productivity through workplace heat standards and cooling access for outdoor workers.

• Leverage — mobilize adaptation finance to close the 12–14× gap between need and delivery.

Comparative case studies—India, Rwanda, Gulf states, and Sub‑Saharan Africa—illustrate how cooling access evolves under different absorptive‑capacity and financing conditions.

The report’s central conclusion is clear: cooling must be governed as productivity infrastructure, not discretionary consumption. Without deliberate financing, efficiency policy, and institutional sequencing, rising temperatures will outpace both technology diffusion and household affordability, locking billions into compounding vulnerability.