What is plug-in solar?
Plug-in solar is a simple way of generating electricity from the sun using solar panels and an inverter system. Unlike a traditional rooftop solar installation, plug-in systems are designed to make smaller-scale solar generation more accessible for homes, balconies, gardens and other suitable spaces.
The basic principle is simple: solar panels generate electricity, an inverter converts it into usable AC electricity, and that energy can then be used within the home. Modern systems can also combine solar generation with battery storage, allowing excess energy to be stored for later use.
Key Considerations
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- Before buying a plug-in solar system, there are several things worth checking. The size of the solar panels, inverter output, available space, battery capacity and the way the system connects to your property can all affect how useful the system will be.
• Where will the panels be installed? Balcony, garden, wall or another suitable location can all have different considerations.
• How much electricity can the system produce? Panel size, orientation, shading and weather all affect solar generation.
• Is the system suitable for the UK? Always check the manufacturer's specifications, certification and connection requirements before purchasing.
Technical Overview
A basic plug-in solar system normally consists of solar panels and an inverter. The panels produce DC electricity, while the inverter converts this into AC electricity suitable for household use.
Some newer systems combine solar generation with battery storage, creating an integrated home energy system. These systems can potentially store surplus solar energy and make it available when solar generation is lower.
• Solar panels — generate electricity from sunlight.
• Microinverter or inverter — converts the electricity into usable AC power.
• Battery storage — stores energy for use later, where supported by the system.
UK Regulations
Plug-in solar isn't simply a case of buying a panel and connecting it to a socket. The equipment, inverter output, connection method and relevant UK requirements all need to be considered.
For anyone considering a plug-in solar or battery system, it's important to understand terms such as G98, G99 and the 800W requirements, as well as checking the specific certification and documentation provided for the equipment.
Explore the UK rules
G98 explained
What G98 means and why it matters for small-scale generation.
G99 explained
When G99 becomes relevant and how it differs from G98.
800W explained
A simple guide to the 800W limit and what it means for plug-in solar.
Do I need an electrician?
Understanding when professional installation or electrical work may be required.
UKPTH Takeaway
Plug-in solar can make solar energy more accessible, but “plug-in” doesn't automatically mean that every system can simply be connected to a standard UK socket.
Check the equipment, inverter, certification and connection requirements before you buy.
Want to understand the rules? Explore our G98, G99 and 800W guides.