Climate data you can actually use.
Last updated: 2026-03-15
Docs Version: 0.19.0
Koi is climate data infrastructure built for investing. Koi combines decades of climate science research with modern engineering to produce decision-grade forecasts at the asset level and above. Built for transparency, speed, and scale.
Where to Begin
- Sign Up : Create a free account.
- Get Started: Quickstart guides and pointers.
- Explore Use Cases: How teams use avoided emissions forecasts.
- Review Methodology: Dive into the art and science of impact forecasting.
Up Next
- Roadmap : See what we're building next.
- Feedback : Share your feedback and influence our roadmap.
- Changelog : Keep tabs on recent changes and new features.
Built on Trust
Since 2018, the Rho Impact team has been actively developing the world's most trusted data, tools, and methodologies for estimating the potential impact of new climate technologies. Koi puts the global state-of-the-art to work at scale.
- Co-creators of the world's most comprehensive free tool for projecting potential impact.
- CRANE
- Contributors to Project Frame's methodology for assessing future GHG impact.
- Frame
- Scientific Advisory Committee member for AEFDi global avoided emissions factors database.
- AEFDi
- Contributors to CDPs Emerging Climate Technology (ECT) Framework.
- ECT
- Co-creators of the ECO Framework for communicating potential impact.
- ECO
- Technical and Content Subject Matter Experts for CFI's ESG Certification Program.
- CFI
Use of Callouts
You'll find some callouts throughout the documentation to draw your attention. These are usually notes that go into more detail about a specific point, refer you to further reading, or call out something important you should know.This is a tip.
This is a warning.
This is what you should avoid or be careful about.
This is for standard information.