Case studies

Commercial Pilot Project

Commercial Pilot Project


Increased production


Average increase over eight-month period

On February 24, 2020, RST installed a PILOT project on a single inverter's worth of panels at a large commercial site. Performance data was compared for 8 months between the RST-inverter vs. non-RST-inverters.


  • Two manual cleanings were performed during the PILOT in which the owner spent thousands of dollars. The panels were dirty again in a matter of weeks.
  • RST improved production by over 10.6% on average over the eight-month period despite 9 rain days in March/April and the two cleanings.
  • Soiling rates steadily increased through the season. In the last two weeks of October, soiling rates increased to over 1%/day.

For more information, download

the case study here.

Why RST CleanTech?

RST CleanTech was established in 2013 and quickly became a global leader in automated solar panel cleaning. Since our inception, we have installed 4,000+ projects worldwide ranging in size from residential arrays to large-scale utility projects. Today our patented systems clean more than 2,000,000 panels each day.

We knew there had to be a way to achieve our goals that didn’t entail deploying thousands of bristle-wielding workers onto high voltage rooftops across the world. When we realized there wasn’t, we created one. Enter, RST NightWash™.

RST NightWash™ is a fully automated solar panel cleaning system with no moving parts that you can control from your phone. Clean whenever you want and keep your panels clean all the time.


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