Solar panels consist of photovoltaic cells that convert sunlight into usable electricity. Remarkably, these cells function even on overcast days, powering household appliances. Crafted from layers of semiconducting material, usually silicon, these cells generate an electric field when illuminated. The intensity of sunlight determines electricity production. Measured in kilowatts peak (kWp), a PV cell's highest energy generation under direct summer sunlight. This energy surplus can be sold back to the grid, reducing bills and potentially earning money. Notably, solar panels enhance property value, making your investment in sustainable energy doubly rewarding.