I am looking for a professional service to clean my Tesla solar roof. Does anyone have a recommendation for the SF Bay Area, preferably the North Bay?
You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
I work with Nathan Porter, and I do recommend him. He is based in the south bay, so work out with him whether you are close enough to make sense.Well, I have a heathly fear of heights and it's a two story house, so I'd prefer a professional.
I don't pay anyone to clean mine, but I did see a 12% increase after cleaning, but that was after the big firesAnother consideration if you have to pay someone to do it, is how much does it cost and what increase in production would it take to pay off the cost for cleaning based on your usual electricity costs.
For example (keeping these numbers simple and hoping that I don’t mess up the math) if you get 25 cents per KWH grid export on average, and it costs $150 to get them cleaned, then you’d need to increase your production with the cleaning by (150/0.25)= 600kwh just to break even, per cleaning.
I clean my panels on my own 2-3 times per year and generally see only about a 2-3% increase after cleaning and that effect wanes with the time since the cleaning. (Which is hard to quantify given differences in season and daily weather patterns, but easiest if you can clean them after a full production sunny day where the next day will also be cloudless full production, you can at least estimate a maximum cleaning effect).
My 4.3kw array produced 6700 kWh in 2020 and 6500 kWh in 2021. If we assumed that there was a 3% increase in production after cleaning my panels that persists through the whole year (which we know there isn’t because the effect wanes over time and you would probably need to clean multiple times to maintain the same effect, at least in rain-starved Southern California), I’d make ~200kwh more with the cleaning, and my break even cost to spend on cleaning is $50 once per year (200kwh*$0.25/kWh, if average electricity cost was $0.25/kWh). Anything more and I’m actually delaying my payback period.
Has anyone had similar experience/math?
Well, I have a heathly fear of heights and it's a two story house, so I'd prefer a professional.