UK Regulation Hub
UK DIY Solar Legislation and Compliance Status (2026)
This page separates legal/compliance detail from the main sales page so households can review requirements clearly before buying equipment.
Current Position (as of 12 April 2026)
- Government announced a plug-in solar pathway focused on sub-800W systems.
- There is no equivalent announced plug-in legislation for above-800W classes.
- For larger systems, use existing non-plug-in connection routes and installer-led compliance workflows.
Compliance Matrix
| Topic | Sub-800W Plug-In DIY | Larger Hard-Wired Systems |
|---|---|---|
| Primary route | Planned plug-in pathway via updated rules | Existing G98/G99 connection frameworks |
| DNO involvement | No full prior-approval path expected, but DNO notification/registration remains important | Process depends on connection class and aggregate capacity |
| SEG/export economics | Assume zero export income for financial modelling unless eligibility confirmed | Usually relies on certification/supplier criteria |
| With existing rooftop PV | Possible if integration is properly engineered | Aggregate generation/protection settings must be coordinated |
Practical Rule Checks
- Use certified, type-tested hardware and follow manufacturer installation instructions.
- For hard-wired systems, account for electrician and notifiable-work compliance requirements.
- Common planning checks cited in guidance include pitched-roof protrusion limits, flat-roof height limits, and garden array distance/size constraints.
- Always verify latest DNO, BS 7671 and local planning position before installation.
Primary Sources
Frequently Asked Questions
Is DIY plug-in solar legal in the UK?
The UK government announced a plug-in solar pathway focused on sub-800W systems. Until updated rules come into force, installers follow existing G98/G99 frameworks and manufacturer guidance.
Do I need DNO approval for a sub-800W plug-in system?
A full prior-approval path is not expected for the sub-800W pathway, but DNO notification or registration remains important. Verify the latest position with your local DNO before installing.
Can I earn SEG export income from a DIY plug-in system?
For financial modelling, assume zero export income unless your eligibility and supplier route are confirmed. Treat export as upside only.
Information only, not legal advice.