How Clean Electricity Is Generated in Modern Wind Farms
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How Clean Electricity Is Generated in Modern Wind Farms
Narrator: Along the North Sea coast, turbines are operated by companies that supply power to millions of homes. Energy is captured by blades that are turned by steady winds, and mechanical motion is converted by generators housed in compact nacelles mounted on towers that are anchored by deep foundations.
Before construction begins, environmental studies are conducted by biologists who assess routes taken by migrating birds. Permits are issued by regulators only when impact is judged acceptable, and monitoring continues after farms are connected by cables to national grids. Noise limits are enforced by inspectors who visit communities that are located near coastal cliffs.
Each turbine is maintained by technicians who are hoisted by lifts to platforms where bolts are tightened by calibrated tools. Lubricants are replaced on schedules that are set
