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.
Targeted industrial and sectoral subsidies (renewable energy, chip manufacturing, agriculture, green hydrogen, etc).
The UK's legally binding 2050 net-zero greenhouse gas target, enshrined in the Climate Change Act 2008 (2050 Target Amendment) Order 2019, the world's first such legislation among major economies. Implementation extends through carbon budgets administered by the Climate Change Committee, sectoral pathways for power, transport, buildings, and industry, contracts-for-difference auctions for renewables, and the post-2026 phase-out of new internal-combustion-engine car sales.
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.