小規模太陽光発電所の累積損失率を考慮した事業収益リスクの感度分析

抄録

Feed-in Tariff (FIT) schemes in Japan are designed to ensure an Internal Rate of Return (IRR) of approximately 4–6%. However, unexpected energy losses due to curtailment and inadequate maintenance represent significant risk factors, particularly for small-scale solar power plants under 1 MW. This paper focuses on the IRR, conducting a sensitivity analysis of project profitability while accounting for cumulative energy losses from future possible curtailment and inadequate maintenance. While profitability analysis is commonplace in business, implementing sensitivity analysis and risk visualisation holds academic value, benefits many owners and O&M operators of small-scale solar plants, and contributes to healthy and sustainable businesses in decarbonisation.