Summary
- A European Commission expert group has assessed cyber risks associated with internet-connected photovoltaic installations.
- The work examines potential consequences for the wider electricity system, including interconnected and cascading effects.
- The recommendations add a sector-specific layer to existing EU cyber, energy, and critical-infrastructure rules.
An European Commission expert group has published recommendations on cyber weaknesses in internet-connected photovoltaic systems and how those weaknesses could affect the wider electricity network.
The Commission published the work on 28 September through the cybersecurity subgroup of its Smart Energy Expert Group. The report assesses risks associated with connected photovoltaic installations, considers threat scenarios across different classes of solar deployment, and examines the potential consequences for electricity-system resilience.
It also evaluates how far the existing EU legal framework already addresses the identified risks and sets out measures intended to strengthen cybersecurity across the solar-generation sector. The Commission has not presented the report as evidence of a specific attack or imminent disruption; it is a risk and policy assessment focused on a rapidly expanding, increasingly digital part of the power system.
Distributed energy complicates the traditional security model for electricity infrastructure. Generation is no longer concentrated solely in a relatively small number of power stations and grid assets. Solar panels, inverters, monitoring platforms, remote-management services, aggregators, and other digital components can create a much larger technology estate distributed across homes, businesses, industrial sites, and utility environments.
Connectivity brings operational advantages, including monitoring, optimisation, and remote management, but it also extends the number of systems whose behaviour could influence electricity generation. The Commission’s broader energy-cybersecurity work has repeatedly highlighted the sector’s particular constraints, including real-time operational requirements, cross-border interdependence, and the risk that disruption in one part of the system can produce cascading consequences elsewhere.
The new photovoltaic work therefore sits alongside a wider EU framework rather than replacing it. The Network Code on Cybersecurity for the electricity sector already introduces sector-specific rules around cross-border electricity flows, risk assessment, preparedness, monitoring, reporting, and crisis management. NIS2, the Critical Entities Resilience Directive, and the Cyber Resilience Act address different parts of the organisational and product-security landscape.
Solar exposes some of the seams between those regimes. A large utility-scale installation may sit clearly inside established critical-infrastructure governance, while thousands of smaller internet-connected systems can depend on equipment manufacturers, cloud platforms, installers, communications services, and aggregators that are governed through a mixture of product, operational, and supply-chain rules.
The Commission’s decision to examine photovoltaic cyber risk separately reflects the increasing operational importance of distributed generation. A vulnerability in a single residential installation is unlikely to create grid-wide consequences on its own. Common technologies, common cloud services, shared remote-management platforms, or vulnerabilities repeated across a large installed base present a different risk calculation.
The report does not establish that those scenarios have occurred. It does, however, move connected solar further into the same resilience discussion already surrounding smart grids, industrial control systems, energy-management platforms, and other digitally managed infrastructure. As Europe expands renewable generation, the security properties of the equipment connecting that capacity to the grid will increasingly sit alongside availability, cost, and performance in infrastructure decisions.
