太陽光発電システムにおけるカーボンクレジット取引：損益分岐点と不労所得に関するケーススタディ
Carbon credit trading in photovoltaic systems: A case study on break-even and passive income (原題)
Suwicha Sokul, Thipwan Fangsuwannarak, Keerati Chayakulkheeree
🤖 gxceed AI 要約
日本語
タイのスラナリ工科大学の5.99MWpハイブリッドPVを対象に、パネル劣化とインバータ効率損失を組み込んだDIEL手法を提案。25年間のライフサイクルでカーボンクレジット有無の4シナリオを比較した。クレジット導入はBEPを約0.5%短縮しIRRを最大2.86%改善する一方、従来モデルは累積収入と炭素削減量をそれぞれ17.40%・21.07%過大評価することを示した。
English
Using a 5.99 MWp hybrid PV system at Suranaree University of Technology as a living lab, the study proposes a DIEL method capturing both panel degradation and inverter efficiency loss over a 25-year lifecycle. Carbon credits (5.52 USD/tCO2eq) shorten the break-even point by ~0.5% (to 4.04 years) and lift IRR by up to 2.86%. Conventional models overestimate cumulative passive income and carbon reduction by 17.40% and 21.07% respectively, revealing an integrity gap in carbon credit issuance.
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
J-クレジットや再エネ由来クレジットの品質・真正性が問われる日本市場にとり、物理的劣化を反映した発行精度の議論は示唆に富む。SSBJ開示における再エネ資産の収益予測の保守性検討にも通じる。
In the global GX context
Speaks directly to the integrity of carbon credit issuance under Article 6 and voluntary markets, where over-crediting from optimistic degradation assumptions is a central concern for ICVCM and ISSB-aligned disclosure of environmental assets.
👥 読者別の含意
🔬研究者:PV資産の炭素収益評価において、パワエレ劣化を組み込む重要性を定量化した実証として参照価値が高い。
🏢実務担当者:再エネ資産のクレジット収益計画や投資回収試算で、機器劣化を保守的に織り込むべき根拠として活用できる。
🏛政策担当者:炭素クレジット認証制度において、発行量算定にインバータ損失等の技術的現実性を要件化する検討材料になる。
📄 Abstract（原文）
The global expansion of photovoltaics (PV) systems and the operationalization of carbon markets necessitate high-precision financial and environmental forecasting. However, conventional economic models often rely on manufacturer-specified panel degradation (ERSD) while neglecting the progressive efficiency decay of power electronics, leading to potential systematic overestimations of carbon revenue. This study addresses this gap by presenting a novel energy reduction including PV panel degradation and inverter efficiency loss (DIEL) method. Utilizing a 5.99 MWp hybrid PV infrastructure at Suranaree University of Technology (SUT), Thailand, as a "living lab" case study, we evaluate the system’s performance over a 25-year lifecycle across four scenarios (with and without carbon credit trading). The results demonstrate that while the integration of carbon credits (at 5.52 USD/tCO₂eq) accelerates the Break-Even Point (BEP) by approximately 0.5% (to 4.04 years) and enhances the Internal Rate of Return (IRR) by up to 2.86%, technical realism is paramount for valuation accuracy. Comparative analysis reveals that traditional ERSD models overestimate cumulative passive income and carbon reduction by 17.40% and 21.07% (14,992 tCO₂eq), respectively, compared to the technically grounded DIEL method. These findings suggest that failing to account for inverter-level losses results in a significant "integrity gap" in carbon credit issuance and financial bankability. This study provides a refined framework for institutional prosumers and regulators within the Thai carbon market (TGO/FTIX), ensuring that environmental commodities and financial returns are aligned with the physical reality of hardware decay.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.59953/paperasia.v42i5b.382first seen 2026-11-12 04:51:18 · last seen 2026-11-13 05:05:20
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