COMMON SOLAR STREET LIGHT INSTALLATION ERRORS

Feb 1
2 min read

Updated: Feb 16

As UK councils and developers continue to adopt solar street lighting for pathways, car parks, recreational grounds, bus stops and new developments, the installation process of solar lights is a crucial part of the light’s performance.

At SolarVision Lighting Technologies, we are regularly instructed by local authorities and developers across the UK. One consistent mistake we see is performance issues are rarely caused by the product itself but by avoidable installation mistakes.

Below, we outline the most common solar street light installation errors in the UK, and how to avoid them to ensure performance and value for money.

1. Poor Location and Shading

Solar streetlights must be installed in locations with consistent, unobstructed daylight exposure. In the UK, where winter daylight hours are limited, even partial shading from buildings or trees can significantly reduce performance.

Installers should also avoid poor drainage areas, common in parks and rural roads, where moisture can potentially flood in the base of the columns where kit is being stored.

Best to carry out a site survey that considers seasonal sun paths, not just summer conditions.

2. Solar Panel Orientation for UK

One of the most common installation errors we see is incorrect solar panel tilt and orientation. For UK installations, solar panels should typically face true south and be set at a tilt angle appropriate to latitude. Panels that are too flat (horizontally) will underperform in winter.

Correct alignment is essential for:

Winter sun yield
Consistent lighting levels
Battery health

3. Wiring and Waterproofing

Loose connections, or poorly sealed cable connections are a frequent cause of faults, particularly in exposed UK weather conditions. All cabling should be outdoor rated, securely fixed, and protected to appropriate IP standards.

If wiring is not adequately waterproofed, moisture ingress can lead to:

Short circuits
Controller failure
Accelerated corrosion

4. Battery Housing

Batteries are the most sensitive component in a solar street lighting system. Inadequate battery enclosures, particularly those with poor sealing or ventilation, can significantly reduce service life.

In the UK climate, battery systems must be:

Fully waterproof and corrosion-resistant
Secure against vandalism
Designed for effective heat dissipation

Improper battery placement is a major contributor to premature failures.

5. Lack of Maintenance

While solar streetlights are low-maintenance, they are not maintenance-free. Dirt, pollution, and bird fouling can reduce solar panel efficiency, an issue underestimated in UK environments with flat solar panels.

A basic maintenance plan should include: