The energy production hierarchy: Which renewable technology should we install first?
エネルギー生産の階層：最初に導入すべき再生可能エネルギー技術はどれか？ (AI 翻訳)
Bashar Al Shawa
🤖 gxceed AI 要約
日本語
この論文は、EU27カ国における太陽光、風力、水力、地熱などの再生可能エネルギーのエネルギー投資収益率（EROI）を比較し、最適な技術選択の指針を提供する。結果として、23カ国が現在の電力需要を満たしつつ最小EROI（約15：1）を維持できるが、4カ国は不可であり、協調的アプローチと社会的ダウンスケーリングの必要性を示唆する。
English
This paper compares the EROI of photovoltaic, concentrated solar power, wind, hydropower, and geothermal energy across all EU27 countries. It finds that only 8 countries have an optimum renewable strategy, while 23 can meet current demand with minimum EROI, but 4 cannot, supporting the need for collaborative transition and societal downscaling.
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
日本のエネルギー政策においても、再生可能エネルギーの導入比率と経済性のバランスは重要課題である。本論文のEROI分析手法は、日本における最適な再エネミックスの検討に応用可能であり、特に地域特性を考慮した技術選択の優先順位付けに参考となる。
In the global GX context
Globally, this paper provides a systematic comparison of renewable energy technologies based on EROI, which is critical for energy transition planning. The finding that some countries cannot meet demand through renewables alone highlights the need for grid integration and cross-border collaboration in the EU context, but the methodology is applicable elsewhere.
👥 読者別の含意
🔬研究者:Researchers can use the EROI methodology to assess optimal renewable technology mixes in different regions.
🏢実務担当者:Energy strategists can apply the hierarchy to prioritize high-EROI technologies in their deployment plans.
🏛政策担当者:Policymakers can leverage the results to design national energy strategies that balance EROI and demand fulfillment.
📄 Abstract（原文）
To sustain modern society, the energy sector must maintain an Energy Return On Investment (EROI) ratio of ~15:1. With the imminent switch to renewable energy, this paper compares the EROI of photovoltaic, concentrated solar power, wind, hydropower, and geothermal energy for all European Union countries (EU27). The results show that only 8 countries currently have what could be described as an “optimum” renewable energy strategy – i.e., where the technology with the highest EROI and highest energy generation potential has the largest share of total renewable energy generation. More positively, 23 countries can produce their current electricity demand through renewable technologies whilst also maintaining the minimum EROI (~15:1). Notably, this entails that four countries are unable to do so – lending some support to the need for a collaborative approach in our energy transition and the necessity to “downscale” modern societies so that they can operate within their ecological ceiling.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1080/15567249.2026.2691922first seen 2026-07-20 04:45:29
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