The Importance of Ongoing Solar Maintenance
Solar installations have no moving parts and require little maintenance. Unlike major mechanical systems, there is no need to lubricate gears, change fan belts, or clean fuel tanks. Does this mean that solar does not require any maintenance? No, your solar installation must receive ongoing attention regularly. There are a few main reasons to have an experienced solar company maintain your existing solar installation:
- Preventative Maintenance
Solar installations are generally safe and have redundant safety systems in-place. However, a regular inspection would identify any failing conditions. These failures could include blown fuses, overheated terminations, worn wires, and separated connections. Electrical equipment that is compromised can cause arcing, heat, or fire and should be corrected immediately.
In many cases, catastrophic system failures will present warning signs in advance. A regular, proactive solar inspection can identify potentially dangerous conditions and prevent future failures. Experienced solar technicians would look for indications such as loose or dangling connections, solar panel “hot spots,” moisture infiltration, and stressed wires. By correcting these warning signs proactively, you may be able to prevent safety hazards in the future.
A regular inspection could also ensure that your solar installation is maximizing output. Most solar owners believe that their installation is operating at peak performance, but it is hard to know for sure. With many monitoring applications, the solar output is captured at a high-level, and minor system underperformance is lost. Solar installations may suffer from minor losses caused by panel-level issues such as bypass diodes, “snail trails,” degradation, or soiling. In addition, components such as inverters or combiner boxes may have performance issues that are not obvious when monitoring at a system-wide level. The cost of this solar review is quickly recouped by correcting any underperformance issues.
A solar inspection includes a thorough review of all system components and should be performed annually. Some essential items on your inspection checklist include:
- Visual Inspection
- Check racking, ballast, wires, and connectors
- Electrical Inspection
- Check electrical readings at all termination points
- Infrared (IR) Scan
- Check for signs of heat on modules, terminations, and electrical gear
- Torque Check
- Check hardware for loose or failing fasteners
- IV Curve Trace
- Check module strings for actual vs. expected performance
- Inspect for excessive dirt and debris and replace/clean air filters
- Corrective Plan
- Summarized findings to establish a baseline and provide a recommended action plan
Solar is generally a low-maintenance investment, but a proper maintenance plan is essential to safe operations. Also, regular inspections can ensure that your solar installation maximizes its electricity yield. This will increase the savings to your bottom line and help improve the carbon savings for our planet.