All-in-One vs. Split Solar Street Light: Which Is Right for Your Project?

What Is an All-in-One Solar Street Light?

An all-in-one solar street light integrates the solar panel, LED light source, battery, controller, and motion sensor into a single compact unit. The entire system is factory-assembled, tested, and shipped as one piece — requiring only pole mounting and angle adjustment on-site.

This design has become the dominant choice for large-scale projects in Africa, Southeast Asia, and Latin America for several reasons: installation requires no electrical wiring knowledge, the compact form factor reduces shipping volume and cost, and the sealed integrated design eliminates the cable connection points that are a common failure mode in split systems.

What Is a Split Solar Street Light?

A split system separates the solar panel (mounted at the top of the pole or on a separate bracket) from the light fixture and battery box (mounted lower on the pole). The components are connected by external cables.

Split systems were the standard design before 2015 and are still used in specific applications: very high wattage installations (above 300W) where a single integrated panel would be too large, projects in locations with significant shading where the panel needs to be positioned independently, and retrofit projects where existing pole infrastructure is being reused.

Direct Comparison: All-in-One vs. Split

Feature	All-in-One	Split
Installation time per unit	15–30 minutes	45–90 minutes
Electrical wiring required	None	Yes (cable connections)
Shipping volume	Lower (integrated unit)	Higher (multiple components)
Available wattage range	10W – 300W	50W – 1000W+
Failure points	Fewer (no external cables)	More (cable connections, separate battery box)
Vandalism resistance	Higher (compact, elevated)	Lower (battery box accessible)
Maintenance access	Requires lowering the unit	Battery accessible from ground level
Best for	Most road and pathway projects	High-power or retrofit applications

IoT Monitoring: The Feature That Changes Project Economics

Modern all-in-one solar street lights increasingly include IoT (Internet of Things) monitoring capability — a feature that was previously only available in high-end smart city installations but is now standard in commercial-grade products.

IoT-enabled solar street lights transmit real-time data on battery state of charge, solar panel output, LED performance, and fault alerts to a cloud management platform. For a project manager overseeing 500 street lights across a rural district, this means faults are detected automatically — often before the local community even notices — rather than through expensive manual inspection rounds.

The economic case for IoT monitoring is compelling: a single fault detection trip for a maintenance team in rural Africa can cost $200–500 in vehicle and labour costs. An IoT system that prevents even 10 unnecessary trips per year pays for itself many times over.

Choosing the Right Wattage for Your Application

The most common sizing mistake in solar street light projects is selecting wattage based on budget rather than photometric requirements. A 60W solar street light installed on a pole that requires 100W to meet the specified illuminance level will fail the technical inspection — and replacing 500 units after installation is far more expensive than specifying correctly from the start.

The correct approach is to start with the road classification and required illuminance standard (EN 13201, IES RP-8, or local equivalent), use DIALux software to determine the required luminous flux, then select the product wattage that delivers that flux at the specified mounting height and spacing.

Conclusion: All-in-One Is the Right Choice for Most African Projects

For the vast majority of solar street light projects in Africa — urban road lighting, rural electrification, school and healthcare campus lighting, and community pathway projects — the all-in-one design offers the best combination of installation speed, reliability, and total cost of ownership.

The key specifications to prioritise are: LiFePO4 battery chemistry, IP66 or higher protection rating, IK08 or higher vandal resistance, and IoT monitoring capability for projects of 100+ units.

Solarens all-in-one solar street lights are available from 30W to 200W, with LiFePO4 batteries, IP66 rating, IK10 vandal resistance, and optional IoT monitoring. Full DIALux engineering support is provided for government tender submissions.