Why Solar Garden Lights Disappoint, and How to Buy Ones That Do Not
The Pattern Everyone Recognises
You buy solar lights in October. They look great through summer. By April they are dim and switching off before you have finished dinner. By the next winter half of them do not come on at all.
People conclude solar lights are rubbish. Usually they are not — they were installed somewhere that could never charge them, and nobody mentioned that at the point of sale.
New Zealand Winter Is the Real Test
A solar light does not run on daylight. It runs on the charge its battery took yesterday. That is the part that gets missed.
In a Christchurch or Dunedin June you might get eight or nine hours between sunrise and sunset, much of it low, grey and at a shallow angle. A panel that banked ten hours of December sun in a few hours is now working with a fraction of that. And the nights it has to cover are the longest of the year.
Summer performance tells you almost nothing about what a light will do in July. If you want lights that work year-round, judge them on winter.
Panel Placement Beats Everything
If you change one thing, change this.
The panel needs direct, unobstructed sun for as much of the day as possible. That means:
- North-facing, in New Zealand. South-facing panels get a fraction of the light.
- Clear of shade — not just tree shade, but the shadow a fence or the house throws in the late afternoon. Check at 4pm in winter, not at noon in summer.
- Away from other lights. Most solar lights switch on using the panel as a light sensor. Put one under a porch light or a street lamp and it will not reliably switch on at all.
- Clean. A film of dust, pollen or salt on the panel meaningfully cuts charging. Wipe them a couple of times a year. This alone revives a lot of "dead" lights.
This is exactly why split-panel designs exist. A split solar pendant keeps the panel out in the open where the sun is, and puts the lamp where you actually need it — a shed, a gazebo, under a deck roof. Those are all places an all-in-one light would never charge.
What Wears Out Is the Battery
The LED will outlast everything. The battery is what fails, usually in two to three years, sometimes sooner in a light that gets repeatedly deep-discharged over winter.
Before you throw away a set that has stopped working, check whether the battery is replaceable. On many units it is a standard rechargeable cell behind a couple of screws, and a two-dollar replacement brings the whole thing back. On sealed units it is not, and that is worth knowing before you buy rather than after.
Warm or Cool White
Cool white is brighter for the same power, which is why cheap sets default to it. It also makes a garden look like a car park.
Warm white reads as softer and more like the light coming out of your windows. For a path, a deck edge or a garden bed, warm is almost always the better choice. Cool white earns its place for security and for actually seeing where you are walking.
Some lights, including our outdoor wall sconce, let you switch between temperatures, which removes the decision.
Buy Sets, Not Singles
One solar light on a path looks like an accident. Lighting reads as intentional when it repeats at an even spacing.
For a path or a deck edge, plan roughly one light every 1.5 to 2 metres and buy the pack size that covers the run in one order. Our in-ground deck lights come in singles, 4, 8 and 12 for exactly this reason — measure the run first, then pick the pack.
When Solar Is the Wrong Answer
Being straight about it: solar is not right for everything.
- A north-facing wall in deep shade will never charge properly. Hardwired, or nothing.
- Security lighting you must be able to rely on in the middle of a wet week in July should not depend on how sunny Tuesday was.
- Anywhere you need genuine brightness. Solar is atmosphere and wayfinding. It is not a floodlight.
For those, a mains fixture is the honest recommendation — and it needs a licensed electrician, which is not a DIY job in New Zealand.
The Checklist
- North-facing panel, no shade at 4pm in winter
- Away from other light sources so the dusk sensor works
- Warm white unless you specifically need security brightness
- Replaceable battery if you want more than two or three years
- Enough units for even spacing, bought in one go
- Wipe the panels twice a year
The range is in Outdoor Lighting. Free tracked delivery across New Zealand.