A PV system is a complete solar energy installation that converts sunlight into usable electricity through photovoltaic panels and associated electrical components. PV systems range from small portable chargers to utility-scale installations generating megawatts. A typical residential PV system costs $15,000-$25,000 after accounting for equipment, installation, and permitting before incentives.
System Components
A complete PV system includes solar panels, inverter (converting DC to AC power), charge controller, batteries (if applicable), wiring, disconnects, and monitoring equipment. Grid-tied systems connect to utility power and typically include net metering to credit excess generation. Off-grid systems require substantial battery storage (typically 10-20 kilowatt-hours) for night operation and cloudy days. Hybrid systems combine both capabilities.
Performance and Maintenance
Residential PV systems produce 1,200-1,800 kilowatt-hours annually per kilowatt installed, varying by location and climate. Systems require minimal maintenance beyond occasional cleaning and quarterly monitoring. Inverters typically require replacement after 10-15 years, while panels maintain 80-85% output after 25 years. Most systems achieve 25-30 year lifespans with proper installation and maintenance protocols.