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炭素除去・残余排出・ネットゼロ完了のための主権的許可枠組み

A Sovereign Permissioning Framework for Carbon Removal, Residual Emissions and the Completion of Net Zero (原題)

Ryder, John F.

Zenodoプレプリント2026-08-20#政策
DOI: 10.5281/zenodo.22030992
原典: https://zenodo.org/records/22030992
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🤖 gxceed AI 要約

日本語

本稿はネットゼロ達成の最終段階における残余排出の扱いに関する主権的許可枠組みを提案する。残余排出の認定には、代替手段の実現可能性を検証する競争的かつ期限付きのシステム機能テストを通過する必要があり、支払い意思だけでは不十分とする。残余排出予算、回避可能性ゲート、システム機能当局、除去責任、主権完了閾値、削減許可規則などの制度を導入し、除去義務の資金調達を排出者に課す。また、緩和抑止、追加性、耐久性ミスマッチ、二重計上などの問題に対処する。

English

This paper proposes a sovereign permissioning framework for handling residual emissions in the final stage of net-zero. Residual status requires passing a contestable system-function test, not willingness to pay. It introduces institutions like Residual Emissions Budget, Avoidability Gate, and Removal Liability, placing financing on emission originators. It addresses mitigation deterrence, additionality, durability, and double counting, arguing carbon removal should price genuinely residual emissions only.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本では、2050年カーボンニュートラル達成に向けて残余排出の扱いが重要課題となる。本枠組みは、J-クレジットやGXリーグなどの制度設計に示唆を与え、排出削減と除去のバランスを制度的に整理する上で参考になる。

In the global GX context

Globally, as net-zero targets approach, residual emissions and carbon removal governance are critical. This framework offers a rigorous approach to avoid mitigation deterrence and ensure removal integrity, relevant for Article 6, voluntary carbon markets, and national climate legislation.

👥 読者別の含意

🔬研究者:Provides a conceptual framework for residual emissions governance, useful for policy design research.

🏢実務担当者:Clarifies conditions under which residual emissions may be retained, informing corporate net-zero strategies.

🏛政策担当者:Offers institutional mechanisms for regulating residual emissions and carbon removal, relevant for national climate policy.

📄 Abstract（原文）

This working paper develops a sovereign permissioning framework for the final stage of net-zero decarbonisation: the treatment of residual emissions that remain after feasible lower-emission substitutes have been tested. The paper distinguishes between an emission that is genuinely difficult to eliminate and one that is merely convenient to retain. Residual status is therefore not created by willingness to pay for carbon removal. It must first pass a contestable and expiring system-function test demonstrating that no qualifying lower-emission alternative can provide the required service within a bounded substitution horizon. The framework introduces a Residual Emissions Budget, an Avoidability Gate, a System-Function Authority, a Removal Liability, a Sovereign Completion Threshold and a Declining Permission Rule. System necessity determines whether an emission is eligible for residual treatment; cost determines only how an independently admitted residual tonne should subsequently be treated. Where verified durable removal is cheaper than eliminating an independently demonstrated residual emission, temporary retain-and-remove may reduce the marginal cost of completing net zero. The retained tonne nevertheless creates a funded physical removal liability. The framework therefore places the principal financing obligation on the beneficiary or originator of the residual emission rather than on households or property owners that may host distributed removal infrastructure. Additional safeguards address mitigation deterrence, baseline-relative additionality, durability mismatch and re-removal liability, institutional capture, residual-budget expansion, and double counting across national carbon ledgers. A one-tonne-one-claim rule separates the physical location of removal from ownership and sovereign accounting. The central proposition is that carbon removal can lower the cost of completing net zero only where it prices genuinely residual emissions rather than legitimising avoidable ones. Permission to retain an emission must be conditional, contestable, temporary, fully funded and progressively withdrawn as qualifying lower-emission substitutes become feasible. This paper continues The Square Metre Must Earn Its Place and forms the third paper in the series begun with The Surface Already Exists .

🔗 Provenance — このレコードを発見したソース

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