Solar panels work by converting sunlight into electricity through a process called the photovoltaic effect, where sunlight hitting semiconductor cells
within the panel creates an electric current; this direct current (DC) is then converted to alternating current (AC) by an inverter, making it usable for
household appliances and the electrical grid.

Solar panels typically last 25 to 30 years, though some may last longer. Solar panels slowly degrade over time, producing less electricity.

It all depends on how big or small your system is. Or for better understanding how much electricity you are consuming. For instance 1 family can live in a 1500 square foot house and use 1600 kwh a year . And another family can live in a 2000 square foot house and can consume 10000 kwh a year. The cost of solar will be cheaper for a bigger house in this case.

A house can run on solar power alone for as long as there’s sunlight, but the length of time depends on the amount of electricity used and the size of the solar system.

A solar system essentially “does not operate” at night because solar panels generate electricity only when exposed to sunlight, meaning they produce no power during nighttime hours; however, to utilize solar energy at night, most systems rely on storing excess daytime energy in batteries, allowing you to draw power from the stored electricity when needed after dark.

The main advantages of a solar system are that it is a renewable energy source, meaning it won’t run out, it produces clean electricity with minimal
environmental impact, can significantly reduce electricity bills, potentially increase home value, and requires minimal maintenance due to its lack of moving parts; additionally, solar systems can operate in various climates and can even generate income by selling excess electricity back to the grid.

While solar panels are most efficient in direct sunlight, they can still generate electricity under cloudy, rainy, or snowy conditions by capturing diffused light that passes through the clouds or rain, though their energy production will be significantly reduced compared to clear days; rain can even be beneficial as it cleans the panels by washing away dust, improving their efficiency slightly; however, heavy snow accumulation on the panels can significantly hinder their performance by blocking sunlight from reaching the solar cells.