Solar panels can still generate electricity on cloudy days, though at reduced efficiency. Modern panels can capture different parts of the light spectrum, including those that penetrate through clouds. Production typically drops to 10-25% of their capacity during heavy cloud cover.

Most solar panels come with a 25-30 year warranty and will continue producing electricity beyond that period, albeit at slightly reduced efficiency. Studies show that quality solar panels degrade at a rate of only about 0.5% per year, meaning they'll still operate at 80-85% of their original capacity after 25 years.

Batteries are not required for grid-tied solar systems, which are the most common type. However, adding battery storage provides backup power during outages and allows you to store excess energy instead of feeding it back to the grid. Batteries are essential for off-grid systems and beneficial for areas with frequent power outages or time-of-use utility rates.

Solar panels require minimal maintenance. In most climates, natural rainfall is sufficient to keep panels clean. In dusty areas or during dry seasons, occasional cleaning with water may improve efficiency. We recommend an annual inspection to ensure optimal performance and check for any issues with wiring or mounting hardware.

In grid-tied systems with net metering, excess electricity is fed back to the utility grid, and you receive credits on your bill. These credits offset electricity you draw from the grid when your system isn't producing enough power. With battery storage, excess electricity can be stored for later use before being sent to the grid.

Yes, it's possible to go completely off-grid with a properly sized solar system and sufficient battery storage. Off-grid systems typically require more panels and larger battery banks to ensure reliable power during periods of low sunlight. Many off-grid homeowners also include a backup generator for additional security during extended cloudy periods.