Case studies

Independent Technical Review, from DNV GL

Independent Technical Review, from DNV GL

Nearly 20%

additional production


Average increase over a one and a half-month period

A new report from DNV–GL concludes that RST improved production by nearly 20% over a 10-week Summer study period. At the start of the study period, all the panels on the roof were cleaned so RST panel performance was the same as all other panels on the roof. After 10 weeks, RST panels showed a nearly 20% increase in production. This averaged out to 7.5% increase in production over these 10 weeks alone.

Combined with the other study period in the Spring, DNV–GL concludes that RST-cleaned panels would have resulted in over a 30% increase in production.

Read the full report here.


Increased production

  • RST NightWash™ improved production by nearly 20%.
  • Over the course of just 10 weeks, average energy production was 7.5% higher.
  • This study finds that over the long term RST-cleaned panels would have resulted in over 30% increase in production.

For more information, download

the case study here.

Why RST CleanTech?

Over 10 years ago, we set out to solve one of the biggest problems facing solar – panel soiling. We wanted to find a way to keep panels clean, maximize energy production, protect panel warranties, and increase revenue for system owners.

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

RST NightWash™ is a safe, cost-effective, and eco-friendly automated solar panel cleaning solution.


Request a quote.