Plug-in solar PV systems offer UK households a simple and cost-effective way to generate electricity by connecting small-scale solar panels directly to standard socket-outlets.
This presents a clear opportunity to reduce energy bills and support decarbonisation goals. However, it introduces significant electrical safety risks that must be addressed before widespread adoption.
The primary risks associated with plug-in PV stem from potential electrical hazards, and these can be amplified by consumer behaviour and misuse.
Key Risks and Challenges:
- Uncontrolled current injection can overload circuits, creating a risk of overheating and fire.
- Plug-in PV systems may interfere with Residual Current Devices (RCDs), leading to nuisance tripping or failure to detect dangerous faults.
- Overcurrent protection is not coordinated, risking delayed fault clearance and damage to circuit breakers.
- BS 1363 plugs are not designed for power generation connections, increasing misuse risks.
- Multiple units may be connected via extension leads, exacerbating overload risks.
- Non-professional installations raise concerns about mounting safety and compliance.
Electrical Safety First welcomes the ongoing technical assessment and standards development work currently being undertaken by the Government, standards bodies and industry stakeholders.
This report is intended to support that process by identifying areas requiring further consideration before widespread rollout. It explores potential safety issues and concerns, as well as presenting several solutions, to aid the safe adoption of these
systems in the UK.
This report does not consider mechanical/structural considerations in depth, which will also need to be explored.
Read our report by downloading it below.
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