LAUSR

Policymakers increasingly need to balance the requirements of energy demand, security and costs: they need accurate estimates of performance. This paper uses public data to assess UK offshore wind farm performance to improve policy decisions. It finds that average capacity factors have improved from 34.9% in Round 1 to 41.0% in Round 2 projects. Drivers for performance are examined and the correlations in performance between UK offshore wind farms analysed. The paper also addresses problems with existing capacity factor estimates and generates new estimates of inter-year variability of capacity factor, providing a more accurate evidence base for policy decisions.