Buyers often treat “all-in-one" and “split" as competing technologies. They are not. They are two mounting strategies, and the right one depends on the pole, the panel space and who will service the lamp.

The Two Layouts

All-in-one: panel, battery, driver and LED sit in one housing. One bracket, one connection, no cable between components.

Split: panel and lamp head are separate, connected by a cable. This allows the panel to be placed where sunlight is best, even if the pole is shaded or the head must sit lower.

When All-in-One Wins

• Open roads with unobstructed sun and standard poles.
• Projects where installation speed decides the schedule.
• Sites with limited technical staff, because there is only one unit to commission.
• Rural programmes with hundreds of identical poles.

When Split Wins

• Poles shaded by trees, buildings or terrain.
• Heritage or urban streets where the head must be small and low-profile.
• High-wind locations where a large panel on the head is a liability.
• Retrofit projects where the existing pole can carry a separate panel.

The Semi-Split Middle Ground

A semi-split design separates the battery and control module from the LED, and can often reuse an existing solar pole. It is the pragmatic option for municipalities that need to repair rather than rebuild, because the battery and LED module can be replaced without removing the whole fixture.

The Hybrid Option

Some projects mix both: all-in-one units on the open stretches and split units near trees or buildings. That is not indecision; it is layout design. Buyers who map shade and wind before ordering tend to spend less than those who standardise on one format for the whole road.

The practical approach is to walk the road with a shade survey, mark the poles that cannot support an integrated head, and specify split only where needed.

Decision Path

1. Is the pole in full sun? If not, split.
2. Is the schedule dominated by installation labour? If yes, all-in-one.
3. Is the site exposed to high wind? Consider split or a lower-profile head.
4. Is this a retrofit? Check pole diameter, then choose semi-split if the head can be reused.
5. Who maintains it? If the crew is small, favour fewer connection points.

Neither layout is superior. The mistake is choosing one for every road and discovering the mismatch at installation.