米国の太陽光発電拡大は恒常的反発を招いていない(Despite Headlines, America’s Solar Boom Isn’t Sparking Constant Backlash)

2026-05-27 マサチューセッツ大学アマースト校

University of Massachusetts Amherst の研究チームは、米国で急拡大する太陽光発電に対し、報道で強調されるほど大規模な地域反発は起きていないことを明らかにした。研究では、全米各地の太陽光発電プロジェクトに関する許認可データや地域紛争事例を分析し、多くの案件が大きな対立なく進行していることを確認した。一部地域では景観変化、土地利用、生態系影響などを巡る反対運動が存在するものの、実際には大多数の住民が再生可能エネルギー導入を支持しているという。研究者らは、メディア報道が対立事例を過度に注目することで、太陽光発電への社会的受容性が低く見積もられている可能性を指摘した。研究は、地域参加型計画や透明な情報共有を進めることで、再生可能エネルギー導入拡大と地域共存が両立可能であることを示している。

A rural solar farm set amongst forest and field. Credit: Getty Images米国の太陽光発電拡大は恒常的反発を招いていない(Despite Headlines, America’s Solar Boom Isn’t Sparking Constant Backlash)

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日焼けした?米国686件の太陽光発電プロジェクトにおける紛争の蔓延 Sunburned? Conflict prevalence in 686 United States solar projects

Juniper Katz, Jongeun You, Natalie Baillargeon, Alice Potapov, Anmol Soni
Energy Research & Social Science  Available online: 12 May 2026
DOI:https://doi.org/10.1016/j.erss.2026.104747

Abstract

Rapid growth in large-scale solar has intensified attention to land-use conflict, yet researchers lack systematic estimates of attention and conflict prevalence across the U.S. This study examines conflict-attention prevalence among large-scale solar projects and the institutional and demographic factors associated with intensity. We compiled a dataset of 686 solar projects that began operating between January 2022 and November 2023 and constructed a conflict-attention index for each by synthesizing news and social-media with a conflict lexicon. Generalized ordered logistic models relate four conflict-attention levels to permitting jurisdiction, project scale, and county demographics. We report five main findings. First, most projects show low contestation, with 56% falling in no or low conflict-attention categories. Second, 19% fall into the high category, exceeding prior quantitative estimates but falling below case-study findings. Third, state-level permitting jurisdiction is associated with a 16.9 percentage point increase in no-conflict probability and a 9.4 percentage point decrease in high conflict, relative to other permitting arrangements. Fourth, conflict-attention rises with plant size, with the probability of high-conflict attention more than doubling between the smallest and largest capacity quartiles. Fifth, Democratic vote share shows no significant relationship with conflict, and higher income is associated with modestly lower conflict-attention, patterns that diverge from wind siting research. Institutional arrangements and project scale, rather than partisan composition, appear to shape conflict and attention in our sample. This study introduces permitting jurisdiction as a predictor and demonstrates how policy process frameworks can measure policy conflicts at scale.

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