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SunSaluter, Inc is a 501(c)3 non-profit organization[1] headquartered in the United States with staff in India and deployments in 19 countries[2]. It is also the name of the flagship technology which the organization developed.

The organization’s mission is to accelerate access to clean energy and water by matching partners with high impact solar tracking and water filtration technologies[3].

SunSaluters optimizes the power output of solar photovoltaic panels using calibrated weight displacement (usually transfer of water from one container into another) to slowly rotate a solar panel to face the sun as it moves across the sky, substantially increasing the panel’s power output[4]. SunSaluter received a patent for the technology for integrating water filtration into the passive solar rotation design[5], although the design was open sourced in 2018, allowing anyone to build a SunSaluter[6].


The technology piloted by SunSaluter was invented by Eden Full Goh in 2008[7] and was initially under development by Full’s company, Roseicollis Technologies, based in Canada[8]. In 2011, Full Goh received a Thiel Fellowship for US$100,000 to develop her passive solar tracker concept[9][10], before continuing its development while an engineering student at Princeton University[11].

SunSaluter was incorporated in 2013, and operates with a volunteer Board of Directors[12] and small staff[13]. By 2013, SunSaluter had pilot projects in Kenya, Tanzania, and Uganda, and sales in Malawi, India, Indonesia, Canada, the U.S. and Mexico[14].


SunSaluter’s passive tracking system ensures the solar panel faces the sun throughout the day, without the use of electricity, permitting the panel to produce up to 30[15] to 40[16] percent[17] more electricity than a fixed-mount panel. The process is also known as horizontal (azimuth) solar tracking[18]. The slow flow of water through a filter into another container acts as a water clock roughly synchronized with the sun’s motion[19]. This also creates the opportunity to add a water filter onto the water clock, resulting in clean water at the end of each day[2]. SunSaluter’s integrated rotating axis and water filtration system is patented, though SunSaluter has encouraged partnerships to promote widest possible distribution of the technology[20].

In 2018, SunSaluter announced that it would make the patented technology open-source, with the intent to "allow SunSaluter to impact not just thousands, but millions of people" and create opportunities for innovation on the design[21].


While maintaining lean operations, SunSaluter's funding sources are diverse including prize competitions, corporate sponsorship, charitable gifts, and board fundraising. Notable awards include:


  1. ^ "Exempt Organizations Select Check". Retrieved 2018-01-03.
  2. ^ a b "Home". SunSaluter. Retrieved 2018-01-03.
  3. ^ "About". SunSaluter. Retrieved 2018-01-03.
  4. ^ [1], Full, Eden, "Systems and methods for weight-based repositioning of solar energy collection devices" 
  5. ^ [2], Full, Eden, "Systems and methods for weight-based repositioning of solar energy collection devices" 
  6. ^ "Press Release Open Source 2018". SunSaluter. Retrieved 2018-07-09.
  7. ^ "Passionate Passivity - Home". Retrieved 2018-01-03.
  8. ^ Helman, Christopher. "Eden Full, Founder, Roseicollis Technologies, 19 - pg.9". Forbes. Retrieved 2018-01-03.
  9. ^ "About - The Thiel Fellowship". The Thiel Fellowship. Retrieved 2018-01-03.
  10. ^ Kelly, Caitlin (2012-09-15). "The Thiel Fellows, Forgoing College to Pursue Dreams". The New York Times. ISSN 0362-4331. Retrieved 2018-01-03.
  11. ^ "Tune in. Drop out. Start up". Princeton Alumni Weekly. 2016-01-21. Retrieved 2018-01-03.
  12. ^ Gilpin, Lyndsey. "The Woman Who Turned Her High School Science Project Into A Global Solar Nonprofit". Forbes. Retrieved 2018-01-03.
  13. ^ "About". SunSaluter. Retrieved 2018-01-03.
  14. ^ Mol, Jessica. "SunSaluter". Retrieved 2018-01-03.
  15. ^ "SunSaluter: a low-cost, passive solar tracker that produces clean water - Energy-Water Nexus 2015 - Climate CoLab". Climate CoLab. Retrieved 2018-01-03.
  16. ^ "Clean Solar donates panel for solar project in Ghana". Retrieved 2018-01-03.
  17. ^ "Why The World Should Know The Names Of These 5 Women In STEM". Huffington Post. 2015-03-16. Retrieved 2018-01-03.
  18. ^ [3], Full, Eden, "Systems and methods for weight-based repositioning of solar energy collection devices" 
  19. ^ "Clean Solar donates panel for solar project in Ghana". Retrieved 2018-01-03.
  20. ^ "About". SunSaluter. Retrieved 2018-01-03.
  21. ^ "Press Release Open Source 2018". SunSaluter. Retrieved 2018-07-09.
  22. ^ "Eden Full profile". Thiel Fellowship.
  23. ^ "SunSaluter: $10,000 Winner of the EcoLiving 2011 Student Leadership Award". Scotia Bank.
  24. ^ "Eden Full (runner-up): SunSaluter". Green Challenge.
  25. ^ "Ashoka Youth Competition".
  26. ^ "SunSaluter Wins "Startups for Good" Challenge". Mashable.

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