Environmental regulation stringency — emissions caps, standards, phase-out mandates, carbon pricing, renewable portfolio standards.
Targeted industrial and sectoral subsidies (renewable energy, chip manufacturing, agriculture, green hydrogen, etc).
Policy posture toward energy supply security — domestic production capacity, import diversification, strategic reserves, nuclear stance, fossil-fuel mix discipline.
Act on Special Measures concerning Procurement of Renewable Electricity by Electricity Utilities (Law No. 108 of 2011), passed 26 August 2011 under the Kan cabinet as a condition of his resignation, effective 1 July 2012. Required utilities to purchase solar, wind, small hydro, geothermal, and biomass generation at pre-set tariffs guaranteed for 10-20 years. Initial solar tariff of ¥42/kWh was among the most generous globally, triggering a large mega-solar installation wave 2012-2015 that made Japan the second-largest solar market. Costs passed through as surcharge on electricity bills, rising from ~¥0.2/kWh to ~¥3/kWh by 2020. Core response to Fukushima nuclear-shutdown energy-mix gap.
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.