Why Europe is rethinking inverters

The EU is taking a closer look at critical energy infrastructure. A recent report by Der Spiegel shows that funding programmes for inverters are being reassessed, above all with regard to dependencies and system security. This fundamentally changes the role of inverters.

Why PV plants can be a security risk

Inverters are not just hardware, but part of a networked infrastructure. Modern PV plants are

• digitally controllable
• integrated into grid structures
• reachable via interfaces
• part of the critical energy supply.

This creates a new attack surface: not because of the plant itself, but because of a lack of control over the system.

When energy infrastructure becomes an attack surface

The concern about cyberattacks arises from the system architecture:

• central control of power output
• access via communication interfaces
• integration into higher-level systems
• dependence on external technologies

If these components are not fully controlled, a structural risk arises. For operators, this means not just generating energy, but securing systems.

The real problem: a lack of system transparency

Many existing plants work perfectly well from a technical point of view. However:

• data flows are not fully traceable
• control logic is not transparent
• access rights are difficult to verify
• system boundaries are not clearly defined

This creates a black box within critical infrastructure, and this is increasingly being questioned politically.

Why control is now decisive

Developments at EU level show that security is becoming a prerequisite. For operators, this specifically means:

• full control over power control
• transparent communication structures
• clear data sovereignty
• integration into secure system architectures

A new benchmark for technology

Efficiency, price and availability remain important. System control, security architecture, regulatory compliance and independence are now added. Technology is thus becoming a strategic decision.

Source (German): Der Spiegel, business section