Maintenance and Troubleshooting of Solar Street Lights

Maintenance and Troubleshooting of Solar Street Lights

Ouyad Solar has been focusing on the field of new energy power generation since 2013. Ouyad Solar provides products and services to over 50 countries worldwide. Our R&D team of experts is committed to delivering world-class PV power plant solutions. For more information, contact us at or +86-15678870014.

As a leader in solar technology, we understand the importance of proper maintenance to ensure solar street lights deliver reliable, long-lasting performance. When cared for correctly, modern solar lighting systems can provide over 15 years of dependable service (EnergySage). However, a lack of maintenance can lead to reduced efficiency, unexpected failures, and costly repairs.

This comprehensive guide covers everything required to properly maintain and troubleshoot solar street light systems. We’ll provide tips to keep your lights running optimally, identify common problems, and detail fixes to restore functionality. With this knowledge, you can minimize lifetime equipment costs and disruption from lighting outages.

The Benefits of Regular Preventative Maintenance

While solar street lights are durable, they still require periodic inspection and care. When maintained properly, solar lighting systems provide the following advantages:

  • Increased Lifespan: Regular cleaning, adjustment, and component replacement enable solar lights to operate reliably for over a decade. Lack of maintenance can reduce operational lifetime by 50% or more.
  • Improved Efficiency: Keeping solar panels clean, batteries charged, and components in good repair ensures your system operates at peak capacity. Efficiency declines sharply as equipment wears out without proper maintenance.
  • Lower Costs: While preventative maintenance requires some investment, it saves substantially on replacement costs long-term by keeping existing systems running efficiently. Lack of maintenance frequently leads to expensive, premature system replacements.
  • Enhanced Safety: Well-maintained solar lights provide consistent, uniform lighting rather than failing unexpectedly. This helps avoid accidents and enhances security via reliable illumination.

Creating a Solar Street Light Maintenance Schedule

To maximize the lifespan of the lighting system, develop a regular maintenance plan accounting for equipment inspections, testing, cleaning, adjustments, and part replacements. We recommend building your schedule around the following tasks:


  • Visually inspect all system components to check for damage. Look for cracked panels, loose wiring, battery leaks, etc.
  • Clear any debris or dirt from solar panels to maintain exposure.
  • Clear any leaves, plants, or other material shading the solar panels or light fixtures.
  • Check for signs of wildlife nesting within light fixtures or electrical boxes. Carefully remove any nests found.

Every 6 Months

  • Thoroughly clean solar panel surfaces using a soft brush and a mild, non-abrasive cleaner. Avoid cleaners containing ammonia or acetone.
  • Check battery terminals for corrosion and clean if required. Confirm the terminals are tight.
  • Verify solar panel angles remain properly aligned with the sun. Adjust as necessary.
  • Inspect all wiring for damage or deterioration. Repair or replace compromised wires.
  • Test lighting duration against manufacturer specifications. If the duration is reduced, troubleshoot why.


  • Perform open-circuit voltage testing across panels and at charge controllers to check for issues.
  • Take amperage measurements on all circuits to confirm ratings align with manufacturer specs.
  • Inspect all structural components and hardware for rust or damage. Repair or replace as required.
  • Replace batteries every 3 years, regardless of testing results, to maintain optimal capacity.

Document all test results, measurements, and replacements. This provides vital data to analyze performance over time.

Troubleshooting Common Solar Street Light Problems

While today’s solar lighting systems are extremely reliable, issues can occasionally arise. Here are troubleshooting tips for the most frequent solar street light problems:

Problem: Light Fails to Turn On at Night

Potential Cause: The battery is not charging.

Fix: Check battery voltage. Replace batteries if required. Inspect solar wiring connections and charge controller functionality.

Problem: The Stays stays dim or Turns Off Prematurely

Potential Causes: battery not fully charging, battery wearing out, solar panel obstructed.

Fix: Clean solar panels; verify no obstruction or shading during the day. Check the wiring and charge controller. Replace the battery if it’s old. Retest the lighting duration.

Problem: Light Flickers or Cycles On/Off

Potential Causes: Loose wiring connections, failing LED driver.

Fix: Check and tighten wiring connections. Replace the LED driver if flickering persists.

Problem: Portions of Light Area Not Illuminated

Potential Causes: Individual LED failure, incorrectly aimed fixture.

Fix: Replace any failed LEDs. Adjust the light fixture angle to ensure uniform lighting distribution.

Problem: Light Works During Daytime

Potential Causes: Charge controller installed incorrectly.

Fix: Reverse solar panel and battery wiring connections at the charge controller to correct polarity. Replace the controller if it is damaged.

By regularly inspecting equipment and promptly addressing issues, you can avoid unnecessary, costly failures and keep your solar street lighting delivering optimal, sustainable performance for years.

For additional maintenance guidance or help troubleshooting complex solar street light problems, contact the solar power experts at Ouyad Solar. Our team of seasoned professionals can get your lighting running reliably. Reach us at or +86-15678870014 for assistance.

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