Summary Report of HERO WEC Test Article for Waves to Water: Electrical Power Take-Off

Aryana Nakhai, Ben McGilton, Scott Jenne

Research output: NRELTechnical Report


The National Renewable Energy Laboratory (NREL) designed and fabricated the hydraulic and electric reverse osmosis (HERO) wave energy converter (WEC), which is a modular system that can utilize either an electrical or hydraulic power take-off (PTO) system to power a desalination device. The method by which this device can convert mechanical work to either hydraulic or electrical energy is by harnessing the energy from waves via a rotary output shaft. This report describes the electrical configuration, where a rotary generator replaces the pump in the hydraulic configuration to power a submersible pump and reverse osmosis unit via an electrical cable, rather than a hydraulic line/hose. This device is of a non-proprietary design where every aspect of the design is made public, including the physical designs, non-proprietary cost data, and electrical drawings developed for the build of this device.
Original languageAmerican English
Number of pages33
StatePublished - 2022

NREL Publication Number

  • NREL/TP-5700-83621


  • desalination
  • electrical PTO
  • wave energy converter


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