再エネコミュニティに供給する自治体所有蓄電システム導入のエネルギー・経済評価：小規模自治体のケーススタディ
Energy and Economic Assessment of the Installation of a Municipally Owned Storage System Serving a Renewable Energy Community: Case Study of a Small Municipality (原題)
Possidente R, Frattolillo A, Baccoli R, Mastino CC, Piga M
🤖 gxceed AI 要約
日本語
イタリア・サルデーニャの小規模自治体パッタダを対象に、自治体所有の750kWh蓄電池を伴う再エネコミュニティ（REC）のエネルギー・経済性能を評価した研究。蓄電池は自治体の自家消費を年間229.35MWh（域内PV生産の45%）まで高める一方、コミュニティ内の仮想共有エネルギーを減少させる。経済性は蓄電池なし構成が優れ、回収期間約5.5年・IRR12.7%と全シナリオで正のNPVを示した。
English
This study assesses the energy and economic performance of a Renewable Energy Community in Pattada, a small Sardinian municipality, comparing a reference case with a 750 kWh municipally owned BESS. Storage raises municipal self-consumption to 229.35 MWh/year (45% of local PV) but reduces energy available for virtual sharing. The storage-free configuration is more profitable, with a ~5.5-year payback, 12.7% IRR, and positive NPVs across scenarios.
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
日本では地域新電力や自治体のPPA・蓄電池活用が進むが、地域内での経済配分と自家消費のトレードオフはFIT卒業後の地域再エネ設計に示唆を与える。
In the global GX context
As EU member states implement RED II/III renewable energy community frameworks, this case quantifies the trade-off between self-consumption and community sharing—relevant to global distributed-energy and just-transition policy design.
👥 読者別の含意
🔬研究者:蓄電池導入がRECの仮想共有量と経済性に与えるトレードオフを定量化した実証例として参照できる。
🏢実務担当者:自治体・地域新電力が蓄電池投資の採算と共有エネルギー設計を検討する際の判断材料になる。
🏛政策担当者:地域再エネ促進制度において自家消費と地域共有のインセンティブ設計をどう調整するかの示唆を得られる。
📄 Abstract（原文）
Renewable Energy Communities (RECs) represent a promising pathway to acceler-ate the integration of distributed renewable energy sources while enhancing local en-ergy self-consumption and citizen participation in the energy transition. This study investigates the energy and economic performance of a REC configuration developed for the municipality of Pattada, a rural community in Sardinia, Italy, with particular attention to the role of a municipally owned Battery Energy Storage System (BESS). The analysis is based on the assessment of photovoltaic generation, electricity demand profiles, and mechanisms governing Virtually Shared Energy (VSE) within the community. Two scenarios were evaluated and compared: a reference configuration without storage and an alternative configuration including a 750 kWh BESS connected to municipal photovoltaic systems. The results indicate that the REC reaches its most effective balance with approxi-mately 700 residential users in the absence of storage and 500 users when the BESS is introduced. While the storage system significantly increases municipal self-consumption, reaching 229.35 MWh/year and 45% of local photovoltaic production, it reduces the amount of energy available for virtual sharing among community members. Economic indicators reveal superior profitability for the storage-free configuration, which achieves a payback period of approximately 5.5 years, an internal rate of return of 12.7%, and positive net present values under all investigated scenarios. The findings provide practical insights into the optimal design of RECs in rural and island contexts, highlighting the trade-offs between individual self-consumption enhancement and community-wide energy sharing.
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.20944/preprints202611.0723.v1first seen 2026-11-13 04:31:40
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