City Heat Solutions Calculator

Population

Female informal workers

Annual heatwave days

Foundational Step

Heat Response Plan

Urban Investments

Cool Roofs

Target share of residential roofs 15%

0%50%100%

Green Space

Target share of city area 13%

0%50%100%

Targeted Interventions

Labor Protections

Income Loss Insurance

Target share of informal workforce 10%

0%50%100%

Timeframe

Start

End

Implementation

Target implementation year 2030

20262050

This tool is designed to help local policymakers, practitioners, and stakeholders build the business case for action. It produces indicative cost-benefit ratios for urban heat interventions to support the strategic case for these measures. The combined impact of interventions is assumed to be additive. More granular analysis is required before using these findings to inform investment decisions, and this tool should not be used to support specific investment decisions. No responsibility is taken for results based on untested user-overridden inputs. Users can refer to the Methodology Note for more detail on what is covered, data sources, and how impacts are calculated. Contact: info@heranow.org

Portfolio BCR

For every $1 invested, this intervention package returns $0.00 in benefit.

Cumulative net benefit · 2050

Costs $0

Benefits $0

Difference $0

Net present value, discounted to today at 0.0% per year.

Costs by intervention

Annualized · 2026–2050

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Benefits by intervention

Annualized · 2026–2050

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Benefit-cost ratio by intervention

Benefit returned per $1 invested

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Expected years to payback

Present value

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