Top 10 Misconceptions About Solar Street Lights

As solar streetlights continue to grow in popularity for both residential and commercial lighting projects, more people are considering them as a smart and sustainable choice. However, navigating the wide range of products on the market can be overwhelming, and in some cases misleading.

Many people fall into traps, leading them to purchase solutions that are underspecified, poorly located, or simply not built for purpose. To help you ‘dodge the bullet’ and make informed decisions, we’ve compiled the top 10 misconceptions we see people make when purchasing solar streetlights.

1. Thinking “Cheaper is Better”

People generally assume all solar streetlights are created equal, and that a lower price means better value. Unfortunately, as with most things this is rarely true. Low-cost options often cut corners on crucial components like batteries, solar panels, and LED’s. The result is unreliable performance, dimmed lighting, and shorter lifespan.

Note: Focus on the long-term value, not just upfront costs.

2. Believing Batteries Are Created Equal

Not all batteries perform the same. For instance, outdated lead-acid batteries have a short lifespan and poor efficiency. Lithium batteries are a better choice, but even here, there are differences. Lithium iron phosphate (LiFePO4) batteries offer superior heat resistance and life expectancy, lasting 7 to 9 years.

Note: Prioritise LiFePO4 batteries for long-term performance and safety.

3. Overlooking Sunlight and Placement

Solar streetlights need direct sunlight to operate effectively. Installing them in shaded areas, under trees or beside tall buildings can lead to underperformance and limited lighting time.

Note: Choose installation spots with maximum sun exposure throughout the day or have a formal lighting design done for your site.

4. Ignoring the Quality of the Controller

Some buyers think the controller is just a basic on/off switch… but it’s the brain of the system. A poor-quality controller can cause battery damage from overcharging or deep discharge. Modern MPPT controllers are far more efficient and reliable.

Note: Always check that your system uses an advanced MPPT controller.

5. Focusing on Wattage Instead of Luminous Efficiency

A higher wattage doesn’t always mean brighter light. The true measure of performance is luminous efficiency e.g. how many lumens (brightness) are produced per watt. Some lights may consume more power but deliver poor lighting results.

Note: Look for lights with high luminous efficiency (lm/W) rather than just high wattage.

6. Forgetting to Account for Rainy or Cloudy Days

Solar streetlights don’t work the same way every day. If your system isn’t built with enough backup power, it may fail after a couple of cloudy days. Proper battery capacity and smart configuration are essential to keep the lights on for 5–9 days without sunlight. Cheaper solar lights (all-in-ones) have very low battery capacity and will struggle to provide you lighting for more than 2 days. We strongly advise you avoid these products unless you are willing to accept this risk.

Note: Confirm the system has a multi-day backup for bad weather conditions.

7. Assuming All Lights Can Handle Any Weather

Not all solar lights are built to withstand extreme environments. In high-heat or freezing climates, the wrong choice of battery or poor sealing can lead to failures. The fixture should have a high Ingress Protection (IP) rating IP65 or higher, to withstand rain and dust. It is the same for the solar panels, make sure you read the technical specifications and ensure they are designed to match your climate variations.

Note: Choose weather-resistant systems designed for your specific climate.

8. Thinking Solar Street Lights Are “Maintenance-Free”

While solar lighting solutions are low-maintenance, they are not maintenance-free. Over time, dust on panels, aging batteries, vandalism, or weather exposure can impact performance. Annual health checks and basic cleaning help keep your system running smoothly. Check to see if your supplier offers maintenance packages. If they don’t then make sure the warranty offers a generous period. 

Note: Accommodate budget for annual maintenance to extend your solutions lifespan.

9. Overlooking After-Sales Support and Brand Reputation

Even the best systems can encounter issues. Without strong after-sales service, resolving problems can be difficult and costly. Buying from reputable brands with solid warranties ensures you get expert help when you need it.

Tip: Always check the warranty period and customer service options before you buy.

10. Conclusion

Buying solar streetlights is a smart investment, but only when you choose the right product for your needs. By avoiding these common misconceptions, you can ensure your lighting solution is reliable, efficient, and built to last for years to come.

Need help choosing the right solar street light solution?

We’re here to guide you through every step, from selection to installation and beyond.

Thinking about switching to solar street lighting? Evaluate your options based on the information above and take a step toward a sustainable future!

Call our team for guidance or support and a specialist will be happy to help you.

01923 726150