Orsted says that wake losses from offshore wind farms planned by EnBW, BP and RWE will lower the energy production of Orsted's existing 1.85GW of wind farms by up to 5.34%. A similar dispute arose between Iberdrola and RWE over the projects in East Anglia. For years, studies have flagged wakes cutting output by 16% at 5 km for a 2MW turbine.