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CabledgerA CBAM certificate portfolio manager that runs the new ITMO 10%-cap as an optimization problem and generates the EU Registry XML for your annual declaration.
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climate, energy & agtech·run 110 · May 2026

Cabledger

A CBAM certificate portfolio manager that runs the new ITMO 10%-cap as an optimization problem and generates the EU Registry XML for your annual declaration.

Genesis score6.83/10
Make Cabledger real.0/500
500 more votes and Cabledger is authorized for build.
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Backing is the vote. When an idea crosses 500, we pull it into the build pipeline and ship it for real — the votes decide what gets built next, not an editor.
The opportunity
10%ITMO coverage cap
Jan 2026Rule retroactive to
weeksFirst-mover window
The case

An EU importer of steel, cement, aluminium, fertilizers, or hydrogen has to surrender CBAM certificates against the embedded emissions of everything it brings across the border. Until eleven days before this idea was generated, the math was a straight liability calculation. The May 13, 2026 draft rule changed that: internationally transferred mitigation outcomes (ITMOs) now count as carbon price paid, but only up to 10% of reported emissions, with eligibility that varies by host country. Suddenly the declarant has a genuine cost-minimization problem under a regulatory cap, and a spreadsheet is the wrong tool to solve it.

Who pays — and why

The compliance or trade lead at an EU importer of CBAM-covered goods (steel, cement, aluminium, fertilizers, hydrogen) — the person who owns the quarterly certificate purchase and personally answers for the annual declaration. The CBAM-obligated declarant population is regulation-defined and enumerable, which makes the buyer list concrete rather than guessed at.

What it unlocks
First ownership of the ITMO host-country eligibility corpus — the rule is days old, so the first builder defines how it is encoded
A 10%-cap portfolio-optimization solver that minimizes next-quarter certificate purchases across domestic credits, ITMOs, and verified supplier actuals
EU Registry XSD-compliant XML generation for the annual declaration
A savings-based proof artifact — every quarterly statement can show the euros the optimizer kept off the bill
How Genesis scored it
6.83across seven criteria
tension 7temporal 9blindspot 5buyer 7leverage 7convergence 5why-not 9
9
Temporal window

The ITMO 10%-cap draft rule was published May 13, 2026, retroactive to January 1, 2026, with feedback closing June 10 — a confirmed signal with a sub-30-day first-mover window.

9
Why nobody did it

The 10%-cap portfolio problem did not exist eleven days before the run — the strongest possible 'just became buildable' answer.

5
Convergence

Two confirmed signals but a single-run footprint and no cluster evidence (xref=2, inbound=0).

Why it scored well

Two confirmed regulation and fragmentation signals plus a solver mechanism born directly of a days-old rule make this far more than a generic compliance dashboard. The 'why nobody did it' answer is the strongest possible kind: the 10%-cap portfolio problem did not exist eleven days before the run.

What's holding it back

Single-run footprint with no cluster evidence kept convergence low, and the incumbent blindspot is shallow — there is no structural cost stopping an existing carbon-accounting vendor from bolting on an ITMO solver. The rule itself is still a draft implementing regulation, so the cap mechanics could shift after the June 10 feedback close.

Signals detected2 sources crossed
SignalFastmarkets / Carbon Herald / dcycle.io

SignalCompetitor scan

Connected ideas· 5 in the web

Genesis doesn't invent in isolation — Cabledger shares architecture with, or powers, these ideas.

Direction briefcabledger.md
cabledger.md
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