They convert sunlight directly into electricity using semiconductor materials through the photovoltaic effect.

Yes, although performance is optimal in direct sunlight, panels still generate power in cloudy conditions.

Generally, PV solar panels require little maintenance, usually just routine cleaning.

Many energy companies offer feed-in tariffs or similar schemes where you can sell excess electricity back to the grid.

Most quality solar panels are expected to last at least 25-30 years, with some continuing to generate power beyond that.