Solar power is tempting for a bar at the far end of the garden: no trench, no cable, free energy. It works well for light loads and badly for heavy ones, and the difference comes down to what you want to run.
What solar handles well
- Solar garden lights for paths and borders. They are cheap and simple, though light output is modest and drops in winter.
- Solar festoons and lanterns for atmosphere.
- Charging phones and speakers from a portable power station.
- LED lighting inside a small shed from a small panel and battery kit.
What it struggles with
- Fridges run continuously and need reliable power through cloudy days and long nights.
- Heaters draw a lot of power; solar battery systems rarely suit them.
- Kettles, hot water and cooking appliances need high power for short periods.
For these, a proper mains supply installed by a competent electrician is usually the right answer. See power to a garden bar.
Portable power stations
These battery units can be charged from the mains or a solar panel and power small appliances. They suit occasional use, such as an evening of lights and music. Check the capacity, the output limits and whether the appliance you want to run is within them. Keep them dry and follow the maker's instructions on charging and storage.
Fixed solar systems
A larger solar panel and battery system for an outbuilding is a proper electrical installation. It must be designed and installed by a competent person. If it connects to the house supply or the grid, further rules and notifications apply, which the installer should handle.
Winter reality
The UK gets much less solar energy in winter. A solar set-up that runs lights happily in June may struggle in December. Plan for winter performance, not summer.
Batteries and safety
Batteries store a lot of energy. Buy from reputable sellers, follow charging instructions and keep them away from heat and water. Don't leave damaged or swollen batteries in use.
A hybrid approach
Many bars combine a mains supply for the fridge and sockets with solar lights for paths and decoration. It is simple, reliable and keeps the trench work to one cable.
List what you want to power and how long each item runs. If anything on the list heats or cools, start the conversation with an electrician rather than a solar kit.
Sources
Primary guidance checked 10 November 2026.