800W Plug-In Solar Explained: What Does 800W Actually Mean?
800W Plug-In Solar UK: What Does 800W Actually Mean?
The 800W limit is one of the most important things to understand when looking at plug-in solar in the UK. It refers to the maximum permitted AC output of a plug-in solar system under the current UK plug-in solar framework. It does not mean that your solar panels can only have 800W of panel capacity.
In this guide
1. What does 800W actually mean?
2. 800W does not mean 800W all day
3. How an 800W plug-in solar system works
4. What happens to the solar power?
1. What Does 800W Plug-in Solar UK Actually Mean?
The 800W figure refers to the maximum AC output from the inverter to the home's electrical system. For example, a system could have solar panels with a combined DC rating higher than 800W, while the inverter limits the AC output to no more than 800W. The important figure to check is therefore the system's inverter/output rating, not simply the total wattage printed on the solar panels.
2. G98 and the 800W Plug-in Framework
- Plug-in solar is connected to the UK's distribution network framework through the relevant G98 requirements.
- The plug-in solar framework introduced in 2026 includes specific requirements for compliant plug-in solar products.
- The complete system must meet the applicable UK product, electrical and network requirements.
- Do not assume that simply buying an 800W inverter automatically makes a system compliant.
3. What to Check Before Buying
- Check the inverter's maximum AC output.
- Check that the complete system is specifically designed for UK plug-in solar use.
- Check the manufacturer's UK compliance information.
- Check that the equipment meets the applicable plug-in solar product requirements.
- Check the installation instructions and safety information.
- Check the requirements for notifying your Distribution Network Operator (DNO).
- Never assume that mixing individual panels, inverters and cables automatically creates a compliant plug-in solar system.
UK Power Tech Hub Takeaway
800W is an output limit, not a promise that your system will generate 800W continuously. The most important thing is to look at the complete system rather than just the panel wattage. A compliant UK plug-in solar system needs the correct inverter, protection, product compliance and installation requirements.