Sustainable Maritime of Onshore Power Supply Systems for Ships in Thai Ports
タイの港湾における船舶向け陸上電力供給システムの持続可能性評価 (AI 翻訳)
Phatthawut Kanokwannakhon, Thanyaphat Muangpan, Kittisak Makkawan
🤖 gxceed AI 要約
日本語
本研究はタイ・バンコク港を対象に、船舶バース時の陸上電力供給（OPS）導入の実現可能性を混合手法で評価した。財務分析では全シナリオで投資魅力が低い（NPV負、IRR負）一方、社会的には正の便益（EIRR 7.78%、年417,885米ドルの純便益）を示し、インフラ投資と船舶側の需要との調整ギャップを明らかにした。公共的補助や段階的導入の必要性を提言。
English
This study assesses the feasibility of onshore power supply (OPS) for ship berthing at Bangkok Port using mixed methods. Financial analysis shows unattractive returns (negative NPV/IRR), but economic appraisal yields positive net social benefit (EIRR 7.78%, annual $417,885) and CO2 reduction of 885.46 tCO2/year. It identifies a coordination gap between infrastructure investment and vessel uptake, recommending public co-financing and phased deployment.
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
日本でも横浜港や東京港などでOPS導入が進むが、本論文はタイの事例を通じて、民間投資だけでは採算が合わず公的支援が必要な構造を示している。SSBJやTCFDに直接関係しないが、港湾の脱炭素化政策の設計に資するエビデンスを提供。
In the global GX context
This paper provides empirical evidence from a medium-scale port in an emerging economy, highlighting the gap between private financial returns and social benefits. It informs global transition finance discussions on infrastructure co-investment and tariff design, relevant for ports in developing regions facing decarbonization pressure.
👥 読者別の含意
🔬研究者:Mixed-methods approach combining interviews, SWOT, and cost-benefit analysis can be replicated for other ports.
🏢実務担当者:Port operators can learn about the need for transparent tariff design and phased deployment to align private and social incentives.
🏛政策担当者:Targeted public co-financing is essential to bridge the gap between negative financial returns and positive economic benefits.
📄 Abstract（原文）
Maritime transport faces escalating decarbonization pressure, prompting ports and shipping lines to evaluate onshore power supply (OPS) as a near-term abatement option for hoteling (at-berth) emissions. This study assesses the feasibility of implementing OPS for ship berthing at Bangkok Port, Thailand, using a sequential mixed-methods design. Qualitative evidence from semi-structured interviews with 26 shipping lines and 3 Port Authority of Thailand (PAT) respondents, combined with a Strengths, Weaknesses, Opportunities, and Threats (SWOT)-based contextual assessment, identifies readiness conditions and adoption constraints. A 30-year discounted cash-flow appraisal evaluates investor-side performance (NPV, IRR, and payback) for a pilot at container berths 20A and 20F and tests tariff mark-up sensitivity under 2022–2024 fuel and electricity price conditions. A socio-economic appraisal monetizes avoided air pollutants (PM2.5, NOx, SOx) and CO2 using AIS-based hoteling profiles and recognized emission-factor approaches, and reports EIRR. Results show that OPS is financially unattractive for the port operator in all scenarios (base case: NPV = −4.61 million USD; IRR = −3.38%); breakeven would require an ~115% tariff mark-up, which may reduce uptake. In contrast, the economic case is positive (EIRR = 7.78% at a 7% social discount rate), yielding an estimated net social benefit of 417,885 USD/year and avoiding 885.46 tCO2/year for a pilot demand of ~1.25 GWh/year. These findings indicate a coordination gap between infrastructure investment and vessel uptake, implying a need for targeted public co-financing, transparent tariff design, and phased deployment linked to demonstrated demand. The study contributes policy-relevant evidence for medium-scale ports in emerging policy settings where social benefits may exceed private returns.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.36956/sms.v8i1.2935first seen 2026-06-29 06:13:23
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