VAWTs Can Triple the Output of Wind Farms Using Existing Infrastructure

Wind Harvest International's (WHI) Vertical Axis Wind Turbines (VAWTs) are powerful tools that will help reverse the buildup of greenhouse gases in our atmosphere.  The new WHI VAWT Model G168 will be a key step towards achieving our goal of doubling, even tripling the energy out of existing wind farms with good near ground wind resources like all the wind farms have in California.   We believe that our VAWTs can stimulate the development of 100,000 MWs of this new energy source by 2030.  Our placement patents will allow VAWTs to be installed under and around traditional Horizontal Axis Wind Turbines (HAWTs) so as to increase their energy output while making use of the same roads and infrastructure on the windiest land available.

VAWTs, with our Model G168 in the lead, will soon enter the world market for wind turbines. Here's why:

  • Advances in Technology. The aeroelastic modeling needed to properly engineer VAWTs has been validated with field data. WHI has used this computer modeling capability and validating data from its prototypes to design its soon-to-be-certified Model G168 to have the same fatigue life as HAWTs.
  • Physics Favors VAWTs. We know how the placement of VAWTs in the “coupled vortex” position increases their efficiencies (Cp max) to the levels of HAWTs. VAWTs generate more power the closer they are placed to one another, unlike HAWTs that require large empty spaces between turbines. This power enhancement for VAWTs is featured in WHI's patented coupled vortex effect.
  • Smarter Wind Energy: Use the Best Land Better. Field research and modeling has begun that will allow VAWTs to be safely placed around HAWTs and in positions that will increase the energy output of these existing turbines.
  • Wildlife Friendly. Many wildlife experts hypothesize that both birds and bats will detect and avoid three-dimensional VAWTs better than they do two-dimensional HAWTs. If not, motion detection and avoidance technologies can be installed.

Because VAWTs can make double use of land, are less expensive to transport, install and maintain, and because their efficiencies can be as high as traditional turbines, they will become a major factor in the wind industry's future growth.  And just in time to help double the world's wind energy.

The founding of the Wind Harvest Company in 1976 is an interesting story that you can read in the About Us - History section. On the left in this photo is Sam Francis, internationally renowned painter. George Wagner, the attorney and environmental activist, is in the middle. Smiling on the right is Bob Thomas, aeronautical engineer and inventor. The year is 1985.  The location is the Windstar 480 VAWT project site in Concord, Calif.

News and Updates

Energy Generation from Onshore Wind Turbines
Drawdown, 2017

WHI Submits Grant Proposal to CEC's EPIC Program
Kevin Wolf, Wind Harvest International Press Release, 21 June, 2017

First Small-Sized Vertical Axis Wind Turbine Ready for Certification
Kevin Wolf, Wind Harvest International Press Release, 15 May 2017

First Foundation Laid and Grid Connection Made for WHI's New VAWT at Test Facility in Texas
Wind Harvest International Press Release, January 20, 2017

Recently Added Papers

Benefits of collocating vertical-axis and horizontal-axis wind turbines in large wind farms
Shengbai Xie, Cristina L. Archer, Niranjan Ghaisas and Charles Meneveau, April 1, 2016, Wind Energy

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