O&M (Operations and Maintenance)

Operations and Maintenance (O&M) encompasses all the ongoing activities required to keep a solar energy system running safely and at peak performance over its lifetime. For residential systems, O&M is relatively minimal compared to other energy technologies.

Residential solar O&M typically includes: monitoring system performance for anomalies (usually through an app or web portal), occasional panel cleaning (1–2 times per year in dusty areas), visual inspections for physical damage or loose connections, inverter maintenance or replacement (string inverters may need replacement at 12–15 years), vegetation management (trimming trees that create new shading), and verifying that production meets expectations. Most residential solar systems require very little active maintenance — there are no moving parts, and panels are designed to withstand decades of weather exposure. For systems under PPA or lease agreements, the solar company handles all O&M at no additional cost. For owned systems, many installers offer optional O&M service plans ($150–$500/year). In the commercial and utility-scale market, O&M is a more structured service with dedicated providers and detailed contracts covering response times, performance guarantees, and reporting.