Solar & battery
Solar Crew Size Calculator
Crew size to finish an installation in a target number of days, and where adding people stops helping.
Result
Crews do not scale linearly. On a residential roof there is a practical limit set by how many people can work safely on one plane, and past four or five the extra hands spend their time waiting. A roof with only one access point is limited further still.
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About this calculator
Can I just add people to finish faster?
Only up to a point. Beyond roughly four or five on a residential roof, the extra hands interfere rather than help, and safety and access limits bite before productivity does.
What is the usual crew?
Three to five for residential: typically a lead, one or two on the roof and one handling electrical and ground work. Commercial crews are larger because the working area is.
The formula
crew grows until crew x effective hours x days covers the total, where efficiency falls as the crew grows
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