Empower cities to accelerate climate action with AI

CityCatalyst brings together AI-powered tools, preloaded datasets, and an intuitive experience in one platform for resilience, risk management, and smarter decisions.
apply for a free trial

Empower cities to accelerate climate action with AI

CityCatalyst brings together AI-powered tools, preloaded datasets, and an intuitive experience in one platform for resilience, risk management, and smarter decisions.
apply for a free trial
City Emissions Inventories for Mitigation
Risk & Action Insights
Use AI to assess climate risks and prioritize high-impact mitigation and adaptation actions.
Quick Start, Big Results
Get a city GHG inventory and risk assessment up and running in hours, not weeks.
Implementation Ready Plans
Prioritized actions with clear timelines, costs, and co-benefits - ready to fund and deploy.

Move beyond scattered spreadsheets and manual workflows

Behind every climate goal, there’s a journey. We simplify it, to allow cities to lead with action, not bureaucracy.

Measure emissions, assess climate risks, prioritize high-impact actions, and access implementation-ready reports -no tech skills required. 


Let your team focus on what truly matters: taking action.

One platform, different users. More impact.

For Cities

Take climate action into your own hands. CityCatalyst is designed so city officials can use it directly, no technical expertise needed. Build emissions inventories and climate plans with confidence, using preloaded data, step-by-step guidance, and AI-powered support.
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For Multicities

Deploy CityCatalyst across 50+ cities simultaneously to accelerate national or large-scale climate programs. Ensure consistent methodologies, unlock regional collaboration, and centralize data collection in one scalable platform.
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For Consultants

Help your city clients move faster with validated datasets, preloaded inventories, and guided planning workflows. CityCatalyst streamlines your delivery process and highlights your tech-forward leadership. No more weeks lost in data prep.
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Environmental and sustainability consulting agency
"My experience with CityCatalyst has been great so far. The tool is friendly and easy to use; adding data is simple, and the built-in AI is super helpful. It's clean, organized, and the reports are easy to generate and share. A great resource for cities."
— Victor Gonçalves, I Care

An Integrated Platform for every step of the City Climate Journey.

Integrate emissions data, climate risk analysis, and tailored action plans to go from assessment all the way to finance and implementation.

GHG Inventory Builder

Generate step-by-step GPC-compliant outputs and get clean actionable reports.

Smart Data Assistant

Get AI support to collect, validate, and structure your climate data according to best practices and proven methodologies.

Easily share your Results

Download your data in standard formats, including direct export to CDP-ICLEI Track; or make a public visualization dashboard to share insights with decision-makers or citizens.

Integrated Third-Party Datasets

Reduce your workload and increase your speed with harmonized datasets from trusted global sources, seamlessly integrated into your workflow. These integrations help you kickstart inventories, fill data gaps, and ensure compatibility across tools.

Climate Risk Explorer

Understand your city's exposure to climate threats. Explore interactive risk tables, and multilingual insights, ready to export and share.

Action Prioritization

Build a tailored climate action plan in minutes. Use your city’s data to rank, customize and implement mitigation and adaptation strategies.

Explore the platform

Connect to different
external sources
You can choose from our sources catalog to effortlessly complete your inventory’s information with validated and curated data providers
Obtain a
GPC Compliant Report
Download a GHG Inventory report compliant with the industry standard methodology that you can share through the CDP-ICLEI track, communicate to your citizens or connect to other tools to develop Climate Action Plans
Keep your data
integrated & safe
Add your data to a database to complete the report either through manual input or uploading your files.
Support your journey with climate intelligence
When in doubt, ask our virtual climate advisor: Clima. An AI model trained with the most relevant and curated tools and resources, ready to assist you every hour and every day.

Ready to simplify your climate work?

We help you turn data into decisions - faster, easier, and with real impact on the ground.
Contact us at citycatalyst@openearth.org

Thank you for your interest



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