家計はエネルギー転換を牽引できるか？
Can households drive the energy transition? (原題)
Corinne Chaton, Samy Zitouni
🤖 gxceed AI 要約
日本語
フランス政府の住宅エネルギー改修計画を題材に、改修投資補助金が家計の投資・消費・貯蓄に与える影響を2期間2財モデルで分析。補助金は所得だけでなく改修費用や住宅の事前状態に依存させる「ターゲティング」が有効で、非金銭的副作用も政策効果の鍵となる。フランスの電気のみ利用世帯データで補正し、省エネ改修を促す補助水準を推定した。
English
Using a two-period, two-goods model with 'essential baskets,' the authors analyze how energy-retrofit investment subsidies affect homeowner investment, consumption, and savings in France. Subsidies are effective only if targeted—not by income alone but also by renovation cost and pre-work housing condition—with non-monetary side effects as a key parameter. Parameters are calibrated on French all-electric households to derive subsidy levels that induce energy-efficient renovation.
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
日本でも住宅・建築物の省エネ改修は2050年カーボンニュートラルとGX推進の重要施策であり、補助金設計（所得だけでなく改修コストや住宅性能に連動）は住宅ローン・省エネ改修促進税制やZEH支援の議論に示唆を与える。家計の行動変容と政策ターゲティングの設計論として、日本の住宅政策・GX予算配分の参考になる。
In the global GX context
Building energy renovation is central to EU and global decarbonization pathways, and this paper contributes to the design of subsidy targeting—linking policy effectiveness to housing condition and renovation cost rather than income alone. It speaks to the broader transition-finance and policy-efficiency debate on how public funds can most cheaply accelerate household decarbonization, relevant to green retrofit schemes worldwide.
👥 読者別の含意
🔬研究者:住宅省エネ改修補助の政策効果を理論モデルと較正で評価する枠組みを提供し、ターゲティング設計の実証研究に応用できる。
🏢実務担当者:住宅・建設・金融の実務者は、補助金が所得以外の改修コストや住宅状態に連動する設計になり得る点を、顧客提案や改修ローン設計に活かせる。
🏛政策担当者:補助金を所得のみで設計すると非効率になり得るため、改修費用や住宅性能を条件に加えるターゲティングが費用対効果を高めることを示唆する。
📄 Abstract（原文）
To accelerate the energy renovation of buildings (residential and tertiary) necessary to achieve carbon neutrality by 2050, the French government has launched an energy renovation plan for buildings. This plan allocates funds across various subsidy and aid mechanisms for housing renovation. What is the impact of these investment subsidies for energy retrofit on such investment and on the consumption and savings of a homeowner household that is not in fuel poverty? How much subsidy is needed to make homes energy efficient?To answer these questions, we develop a two-period, two-goods model that incorporates ``essential baskets'', i.e., baskets of goods (with a "minimum energy'' level and an ``essential composite good''). Investment subsidy for energy retrofit is effective if it is targeted and, this targeting should not be based solely on income. Indeed, we highlight non-monetary side effects as one of the key parameters of policy effectiveness. To be effective and as inexpensive as possible for public authorities, subsidies must depend not only on household income, but also on the cost of the work and therefore on the condition of the housing before the work is carried out.For illustrative purposes, we estimate and calibrate the parameters of the model with data from French households that only use electricity as an energy source for their homes. We determine the subsidies that encourage households to renovate their homes to make them more energy efficient.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.reseneeco.2026.101600first seen 2026-10-16 04:41:52
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