A clear, jargon-free explanation of how solar panels convert sunlight into electricity — and how that electricity powers your home.
Solar panels seem like magic — sunlight goes in, electricity comes out. But the science behind them is actually pretty straightforward. Understanding how your system works helps you get the most out of it and spot problems early.
Solar panels work through something called the photovoltaic effect — discovered in 1839 by French physicist Edmond Becquerel. When photons (light particles) from the sun hit a silicon cell, they knock electrons loose. Those free electrons create an electric current.
Each solar panel is made up of dozens of individual silicon cells. When sunlight hits them, they generate direct current (DC) electricity. Your home runs on alternating current (AC), so the next step is converting it.
Your solar system includes an inverter — the brain of the operation. It converts the DC electricity from your panels into the AC electricity your appliances use.
There are two main types:
Once your panels generate electricity, it flows through your home's electrical panel. Your appliances use it first — lights, HVAC, refrigerator, EV charger. If you generate more than you use, the excess flows to the grid (or charges your battery).
Under California's NEM 3.0 rules, excess electricity sent to the grid earns you credits — but at a lower rate than before. This is why pairing solar with a Tesla Powerwall battery is now essential. Instead of sending cheap daytime energy to the grid, you store it and use it at night when rates are highest.
Your utility meter tracks electricity flowing in both directions. When your panels produce more than you use, the meter runs backward (or records a credit). When you draw from the grid at night, the meter runs forward.
At the end of each billing period, you pay only the net difference — hence "net metering." With a properly sized system and battery, many Pell Solar customers reduce their SCE bill to near zero.
A typical residential solar panel produces 400–450 watts under ideal conditions. A 16-panel system (6.8 kW) produces roughly 25–30 kWh per day in Southern California — enough to power an average home.
Production varies by:
Every Pell Solar installation includes a monitoring system — either Enphase Enlighten or Tesla's app. You can see exactly how much energy each panel is producing in real time, track your savings, and get alerts if something isn't working correctly.
Solar panels convert sunlight to DC electricity → an inverter converts it to AC → your home uses it → excess goes to a battery or the grid. It's a clean, silent, low-maintenance system that can power your home for 25+ years.
If you're curious how much a system would produce for your specific home, get a free quote from Pell Solar. We'll design a system sized exactly for your energy usage.
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