해상풍력법에 따른 입지 규제요인의 공간적 적용과 예비지구 가능해역의 변화 분석

Ahead of the implementation of Korea’s Special Act on Offshore Wind, quantitative evidence is needed on how preliminary zone designation requirements constrain the feasible offshore space for offshore wind development. This study operationalizes siting constraints specified under the Act in a spatial framework and evaluates changes in the feasible area for preliminary zones as regulatory constraints are cumulatively applied. We partition Korea’s national waters into a 1′ grid and compare 16 scenario combinations, consisting of four techno-system scenarios that combine water-depth thresholds (-60m/-200m) and grid-connection distance thresholds(75km/150km), and four scenarios reflecting the cumulative application of legal and policy-based constraints. The results show that the feasible area for preliminary zones decreases with cumulative constraints, reaching as low as 8,779km2 (19.2%). In particular, incorporating shipping/navigation and military training constraints leads to pronounced reductions in feasible area, identifying them as key bottlenecks that warrant priority review and consultation during the preliminary zone designation process. By quantifying how overlapping constraints reshape the feasible offshore wind supply space ex ante, this study provides empirical evidence to support early-stage policy decisionmaking, including defining screening scope and setting consultation agendas for preliminary zone designation.