To help you get the most out of your solar investment, it is helpful to understand the "hidden" technical factors that influence how much energy your panels produce. These aren’t just technical buzzwords—they are real-world performance factors your installer accounts for during system design.
Solar panels produce DC electricity, which your inverter converts to AC electricity for your home.
What it is: Inverter clipping occurs when panels can produce more power than the inverter can accept—like pouring water through a funnel that’s slightly too small.
The Reality: Installers often undersize inverters intentionally. Peak production only lasts a short time each day, and a slightly clipped inverter is often more cost-effective and efficient over the entire year than an oversized one.
Shading is one of the biggest threats to solar production. Even small shadows can cause major drops in output.
How it works: Traditional “string” systems operate like old holiday lights—if one panel is shaded, the whole string’s performance drops to match the weakest panel.
The Fix: Modern systems use Microinverters or Power Optimizers (MLPE). Each panel operates independently, so one shaded panel doesn’t drag down the entire system.
Curtailment happens when your system could produce power, but the utility requests that production be limited.
Why it happens: Extremely rare for homeowners. It typically occurs when the grid is flooded with excess solar energy and cannot safely accept more.
What to know: Utilities may stop crediting excess power or remotely limit output in rare cases. This has almost no impact on annual savings but is standard language in interconnection agreements.