NIS2 for Electricity

Electricity is an indispensable element of modern society, millions of houses, companies, and transport services rely continuously on this energy, and even a short-term interruption can have major negative effects. The critical importance of electricity makes this sector a direct target for cyberattacks, and in this context, NIS2 includes electricity among essential entities, which imposes on organizations in the field the obligation to comply with the strict requirements set out by the European directive.

Electricity NIS2 compliance requirements

The electricity sector faces stricter NIS2 compliance requirements than many other industries, because the systems for production, transport, and distribution of energy are considered critical infrastructure with a direct impact on the functioning of society. In this context, operators must implement security controls adapted to both IT environments and industrial systems (OT/ICS). Protecting OT / ICS systems (SCADA, protections, automation) A defining element for the electricity sector is the need to secure industrial control systems that operate energy networks and facilities. According to NIS2, companies must ensure:

segmentation of IT and OT networks
continuous monitoring of critical systems
protection against unauthorized access to control equipment
mechanisms for detecting manipulation of control data

Dedicated security roles for operating energy infrastructure NIS2 requires security officers:

personnel dedicated to both IT and OT security
coordinated procedures between transmission system operators (TSO), distribution system operators (DSO), and suppliers
collaboration with national authorities regarding critical infrastructure

Main NIS2 Challenges for Electricity

Implementing NIS2 is a challenge in the electricity industry due to the unique characteristics of its infrastructure and operations. The main challenges are:

IT/OT convergence and architecture complexity
NIS2 requires uniform security measures, but in electricity, IT and OT operate differently.
Challenge: securing both environments simultaneously without interrupting supply is a major challenge.

Legacy systems that cannot be easily modernized
NIS2 requires patches, updates, and modern protective measures.
Reality: many OT systems cannot be interrupted or updated in a traditional way, making compliance difficult.

Large attack surface
Large area dispersed networks, thousands of connection points, diverse equipment, and multiple suppliers create very high exposure.
NIS2 requires end-to-end visibility and control — difficult to achieve in a large infrastructure.

Increased monitoring and reporting requirements
The energy sector must detect and report incidents that can affect supply services, not just data breaches.
Thus, reporting obligations are more complex than in standard sectors.

24/7 operation without interruptions
NIS2 requires testing, audits, and technical and operational measures.
In electricity, any downtime can affect the population and the economy, so implementation must be done without stopping services.

Critical dependence on suppliers and the supply chain
Evaluating and controlling suppliers, as required by NIS2, is difficult because:

equipment is specialized
suppliers can be international
some components have a single manufacturer

This makes ensuring end-to-end compliance challenging.

FAQ

What changes does NIS2 bring for companies in the electricity sector?

NIS2 raises the minimum level of cybersecurity and treats electricity as critical infrastructure. Companies must implement advanced measures for both IT networks and OT/ICS systems, continuously monitor critical infrastructure, and demonstrate operational resilience against cyberattacks.

How does NIS2 affect legacy systems in electricity infrastructure?

NIS2 requires companies to manage risks associated with legacy systems, which can no longer be updated. This involves implementing alternative security measures, strict segmentation, advanced monitoring, and long-term modernization plans — all without interrupting supply.

What risks must be managed in the supply chain?

Companies must evaluate and control suppliers delivering industrial equipment, specialized software, hardware components, and maintenance services. NIS2 requires verifying third-party compliance because a single vulnerability in a supplier can compromise the entire electricity network.

Is NIS2 difficult to implement in the electricity sector?

Business continuity plans are crucial. These include redundant infrastructure, backup servers, alternative tracking tools, and clear communication procedures with logistics partners—ensuring operations continue even when part of the system is impacted.