Sizing Solar
Solar Panels and Shade Trees: How Much Shade Is Too Much?
One shaded panel can drag down others or none, depending on the wiring. How shade is modeled, what to ask for, and when trees rule out the roof.
Hamza Arham Rizvi
Sizing Solar
South Facing Roof Solar: What Direction and Pitch Cost
South is the reference, not a requirement. What a DOE lab chart says about direction and tilt, when west can matter more, and how to model your own roof.
Hamza Arham Rizvi
Sizing Solar
Peak Sun Hours by State: What the Tables Leave Out
State sun-hour tables average away your roof. What a peak sun hour is, why the tables disagree, and the free public tool that models your own address.
Hamza Arham Rizvi
Is Your Solar Production Estimate Realistic? Check the Inputs
A production estimate is a model output, not a measurement. Here are the six inputs that move it, and the questions that get them out of your installer.
Hamza Arham Rizvi