Solar Equipment
Panels, inverters, and the three separate warranties behind them, plus what a roof's remaining life does to the arithmetic.
- Solar Equipment Solar Panel Tilt and Azimuth: What Shade Costs in kWh A roof modeled at 225 degrees instead of 180 loses 657 kWh a year on paper alone. PVWatts numbers for azimuth, tilt, and shade, run on one roof, math shown.
- Solar Equipment Solar Panel Removal and Reinstall Cost: The Roof Age Math Contracts say 'competitive price' and cost guides disagree by 2x. Price a future removal and reinstall into payback, and find when to reroof first.
- Solar Equipment Microinverter vs String Inverter: What Your Roof Decides The 25-35% in microinverter pitches is a share of your shade loss, not extra output. NREL's testbed report, NEC 690.12, and the kWh math for one roof.
- Solar Equipment Solar Panel Warranty: Three Documents, Not One The line that says 25-year warranty is three contracts signed by two companies. What each one pays for, and where each one lands when the installer folds.