Solar Panel Degradation Rates: How Much Power You Lose
Solar panel degradation is the permanent, irreversible loss of power output as a panel ages. Modern panels degrade at a median of about 0.5% per year, so a well-built system retains roughly 85% to 92% of its original nameplate capacity after 25 years. In practice, you lose 8% to 15% of your starting output over […]