2021 Component Innovation Project Awardee: Bergey Windpower

Research output: NRELFact Sheet


In recent years, the cost of small wind turbines for homes, farms, and small businesses has decreased dramatically thanks to advances in American technology made possible by research and development support from the U.S. Department of Energy. But further reductions are needed to realize the gigawatt-scale potential of distributed wind energy to help electrify rural America, reduce carbon emissions, and create jobs. Currently, for residential- and farm-scale wind turbines with direct-drive, permanent-magnet alternators, the alternator is the highest-cost component of the wind turbine (excluding the tower). The Bergey Windpower Excel 15 wind turbine incorporates advanced technology in its rotor and controls and will soon incorporate advanced power electronics - but its alternator is based on technology that is more than a decade old. To help reduce capital expenditures of the Excel 15 wind turbine, Bergey Windpower is developing an advanced, lower- cost, permanent-magnet alternator.
Original languageAmerican English
Number of pages2
StatePublished - 2022

NREL Publication Number

  • NREL/FS-5000-84286


  • CIP
  • Competitiveness Improvement Project
  • distributed wind
  • midsized wind turbines
  • small wind
  • wind turbine certification
  • wind turbine innovation


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