Environmental regulation stringency — emissions caps, standards, phase-out mandates, carbon pricing, renewable portfolio standards.
Policy posture toward energy supply security — domestic production capacity, import diversification, strategic reserves, nuclear stance, fossil-fuel mix discipline.
Prime Minister Suga's policy speech to the 203rd extraordinary session of the Diet on 26 October 2020 committing Japan to net-zero greenhouse gas emissions by 2050, upgrading the prior Abe-era 80%-by-2050 framing to a formal carbon-neutral target. The pledge was followed in April 2021 by an interim 2030 target of a 46% emissions cut from 2013 levels (with a stretch 50% ambition), replacing the previous 26% target. Codified in the 2021 revision to the Act on Promotion of Global Warming Countermeasures. The trajectory was operationalised through METI's Green Growth Strategy (December 2020) and the Sixth Strategic Energy Plan (October 2021).
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.