Waste Management Cost Impacts on Project Finance: A Case Study of Solar Photovoltaic Rooftops in Thailand


Recently, the Royal Government of Thailand has announced promotional policies for solar photovoltaic (PV) roof mounts. The feed-in tariff policy of three project scales (residential <10kW, medium commercial 10-250kW and large commercial/industrial 250-1000kW) has been granted to the applicants for the duration of 25 years at 6.96, 6.55 and 6.16 Baht (0.20, 0.19 and 0.18 USD), respectively. However, there is no regulation on waste generated from solar PV project that will lead to environmental effect in the decommissioning phase. The effect of waste handling cost on the project finance has been analyzed by using Thailand’s circumstance data in 2015. Cash flow of 54 cases have been calculated along with other financial parameters. The results indicated that the most profitable case for residential scale is disposal to existing land filled (IRR 13.01%, NPV 260,718.32 Baht, and BCR 1.19). In same trend, the highest return case for medium scale is disposal to existing land filled (IRR 14.34%, NPV 11,789,246.01 Baht, and BCR 1.37). For large scale, waste handling method generating the highest yield is waste incineration (IRR 14.27%, NPV 43,458,050.35 Baht, and BCR 1.36). Sensitivity analysis indicated that the project return of small, medium, and large scales would be below the benchmark value, 12.63% calculated from the ROE of the power producing companies in the national open market, at 5%, 10% and 10% income reduction, respectively. The financial results are used in predicting the designated solar PV waste, which requires proper policies in order to enforce and encourage responsibility of relevant parties.

Author Information
Kritsana Sontimanotham, Mahidol University, Thailand
Komgrich Thavornwanchai, University of the Thai Chamber of Commerce, Thailand
Raywadee Roachanakanan, Mahidol University, Thailand
Sittipong Dilokwanich, Mahidol University, Thailand

Paper Information
Conference: IICSEEHawaii2017
Stream: Economic Sustainability: Environmental Challenges and Economic Growth

This paper is part of the IICSEEHawaii2017 Conference Proceedings (View)
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