Integrated port, vessel and material-recovery network design for offshore wind decommissioning under uncertainty
Ocean Engineering, cilt.369, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 369
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.oceaneng.2026.129077
- Dergi Adı: Ocean Engineering
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Compendex, Environment Index, Geobase, ICONDA Bibliographic, INSPEC, The International Construction Database (ICONDA), Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Material recovery, Multi-objective optimization, Offshore wind decommissioning, Port network design, Stochastic programming, Vessel allocation
- İstanbul Ticaret Üniversitesi Adresli: Evet
Özet
This study develops a two-stage stochastic mixed-integer linear programming model for offshore wind decommissioning network design. It optimizes port-hub activation and capacity, long-term and spot vessel capacity, site-port assignment, temporary storage, and material routing under uncertainty in retirement volume, weather accessibility, charter rates, and port availability. GIS-derived routes, bathymetry, ERA5 weather windows, and life-cycle coefficients inform a Turkish case with four offshore areas, five candidate ports, five downstream facilities, five vessel classes, and 36 scenarios. Storage costs cover all inbound material over its average dwell time. Recovery credits use yield- and substitution-adjusted output, and facility-managed process residuals incur explicit treatment costs and emissions. The primary normalized Euclidean rule selects F3, which opens three hubs and contracts one long-term heavy-lift jack-up vessel. Its expected cost is 825.38 million USD and net emissions are −301.39 kt CO2e, a 4.35% premium over the cost endpoint while capturing 62.1% of the attainable emission improvement. The verified stochastic-cost incumbent is 791.00 million USD, and estimated EVPI is 52.78 million USD (6.67% of RP). The hub design is retained across the tested recovery-credit cases, but combined conservative assumptions yield positive net emissions, demonstrating that the environmental benefit depends on recovery and substitution performance.