Newer windfarms require more than double the amount of maintenance than older ones, according to an independent inspection firm. September 26, 2018 | David McPhee | Energy Voice Windfarms under five years of age require on average seven repairs per turbine in contrast to those older than that period only needing 2.2 repairs. A report … Continue reading Higher Breakdown Risks and Maintenance Required for Newer Larger Wind Turbines.