KeldrionWe make compliance easy.
We write open-source regulatory and computational law software and help our partners achieve excellence.
EU carbon price
The daily price of European Union Allowances under the EU Emissions Trading System, in euros per tonne of CO₂ - the market CBAM certificate costs are priced against.
€85.41
EUR per tCO₂ · 17 Oct 2026
+4.48 (+5.54%)
Data: OilPriceAPI · EU_CARBON_EUR · EU ETS allowance spot price, daily
Where to meet us
We walk these fairs rather than exhibit at them. If your goods move into the European Union and there is a CBAM declaration at the end of it, find us on the floor - or write to us first and we will set a time before the doors open.
- ALUMINIUM, DüsseldorfOct 6-8, 2026
- Canton Fair, Guangzhou - Phase 1Oct 15-19, 2026
- Eco Expo Asia, Hong KongOct 26-29, 2026
- ALMAC, Hong KongNov 16-17, 2026
Contact us
Tell us what you need.
Choose the service you are interested in, say what you are up against, and we will answer ourselves.
Research & projects
We are a research and development firm, and we say what we are working on. None of it is a compliance method until the regulation makes it one.
Working paper · CC BY 4.0
Prove, Don't Disclose
Kaimeter Working Paper 2026-01 · v1.1 · Preprint
A design for verifiable CBAM compliance across industrial supply chains, combining rules as code with zero-knowledge proofs.
Research only: zero-knowledge proofs are not an accepted basis for a CBAM declaration, and this work does not replace accredited verification.
Open source · Apache-2.0
Kaimeter
The CBAM methodology written as versioned, executable rules - each one recorded beside the provision it comes from, so a figure can be traced to the rules that produced it. Primary aluminium is the first bundle.
Blog
2026-09-18
Kaimeter v0.1.0: the aluminium rule bundle
The first release of the implementation encodes the CBAM methodology for primary aluminium as executable, hash-identified Rust. No prover yet.