Determining the electricity generated by a photovoltaic (PV) panel involves several factors. This process usually begins with understanding the panel’s specifications, including its rated power (watts), voltage, and current at Standard Test Conditions (STC). A simplified calculation multiplies the panel’s rated power by the estimated daily sunlight hours. For example, a 300-watt panel receiving 5 hours of peak sunlight could, theoretically, produce 1500 watt-hours (1.5 kWh) of energy.
Accurately estimating the energy generation from solar panels is crucial for system design, financial planning, and performance monitoring. A precise projection allows for optimized system sizing to meet energy demands, realistic return-on-investment calculations, and identification of potential performance issues over time. Historically, accurate energy prediction has allowed for better grid integration and optimized energy management practices, driving the widespread adoption of renewable energy technologies.