Considering plug-in solar at home? Electrical experts say to watch for these 6 safety risks
The recent surge in interest in plug-in solar kits has sparked excitement about the potential for households to save money. However, industry groups in the UK have raised significant concerns about the safety of these kits, urging consumers to proceed with caution. This article delves into the six key safety risks associated with plug-in solar, as highlighted by these groups, and explores the implications for homeowners and the energy transition.
The Risks of Plug-In Solar
Two-Way Power and RCDs:
One of the primary concerns is the potential for two-way power flow, which could compromise Residual Current Devices (RCDs). These safety switches are designed to shut off power when a circuit leak is detected. The industry groups warn that this two-way power capability might lead to failures, and they cite a tragic incident in Australia where a death occurred due to such a failure. However, it's important to note that not all Australian regulators share this view.Fire Hazards:
The age and condition of UK housing present a significant fire risk. Over half of the homes in the UK are over a century old, with outdated and damaged electrical wiring. Plug-in solar units can exacerbate this issue by causing localized overheating of cables, especially when multiple units are used. This is a critical concern, especially in older properties.Quality and Compliance:
The market is flooded with cheap, poorly regulated products that may not meet quality standards. Some kits are marketed with flattened cables designed to fit under doors or through openings not designed for electrical equipment. This could lead to safety hazards, and it's a concern that a home DIYer might overlook but a qualified electrician would find problematic.Grid Safety and Network Management:
Network operators face challenges in monitoring and managing power generated by plug-in solar units. This could impact local network capacity and stability, as well as the response time of microinverters in shutting down power during outages. The lack of control over power flow is a significant safety concern.Liability and Insurance:
The issue of liability is complex. Insurers may react unpredictably to damage caused by self-installed hardware. Landlords, leaseholders, and insurers face potential financial risks due to the lack of clarity around the suitability of electrical equipment. This uncertainty adds a layer of complexity to the safety considerations.Installation and Trip Hazards:
Poor installation practices, such as using extension leads and adapters, can create trip and fall hazards. Badly routed cables and poorly fitted solar panels on balconies can lead to injuries. The industry groups warn that amateur DIYers may be guilty of these practices, which could have serious consequences.
The Way Forward
The industry groups emphasize the importance of a cautious approach to plug-in solar. They suggest that a rushed rollout could weaken confidence in the energy transition. UK electrical standards are stringent, and it's understandable that these groups are concerned about the potential risks. As UL Solutions introduced the first certification framework for plug-in solar, some US states have allowed homeowners to install panels. However, the UK groups are focused on similar systems that meet or exceed UL 3700 specifications.
For homeowners, the advice is clear: if you have any doubts about your installation, consult a licensed electrician. This is especially important if you live in an old property, experience overheating issues, or have concerns about the quality of your kit. The safety of plug-in solar is a critical consideration, and it's essential to address these risks to ensure a smooth energy transition.
