A few times each week we tender discussions with homeowners (who are interested in going solar) that begin with a similar question: How do I know if my home/roof is a good candidate for solar, given shading from surrounding trees? Or, perhaps it's a statement: Solar won't work at my home because I have too much shading.
With kudos and thanks to THE GREAT Mike Kluk -- one of hundreds of terrific Cool Davis volunteers that propel our community's sustainability -- we now have an in-depth look at technologies we employ to help mitigate shading (and, thereby, maximize electricity generation of solar panels that are shaded). Mike just published an article in The Enterprise, Rooftop solar: Partial fixes for partial shade. If you're contemplating solar, it's well worth a read.
We had the pleasure of sitting down with Mike to help inform his research and prose. An excerpt:
Every residential solar installation is unique. Roof size, angle, and orientation to the sun all affect production. But for installations where intermittent shading is an issue, the addition of optimizers or microinverters typically increases production from 15 to as much as 25%. Over the lifetime of a system, 20 to 30 years typically, that is a tremendous amount of power that you will not need to pay for.
Our take: Solar does not work for everyone. However, by employing SolarEdge's power optimizers, the downside of shading is mitigated.
Most important, we are happy to perform an assessment and quantify the impact of shading. The end result may be a no-go, but it's worth contemplating.