Elexon

Elexon operates as the electricity market operator for Great Britain, responsible for administering the Balancing Mechanism and the Settlement Code that underpin the wholesale electricity market. It provides the essential services that match electricity supply with demand in real time, ensuring that generators and suppliers are settled accurately for the energy they produce or consume. The organisation also collects, validates and disseminates market data, including metering information and pricing signals, to participants such as generators, suppliers, traders and network operators. By maintaining a neutral platform, Elexon supports transparent and competitive trading across the GB electricity market.

In May 2020, Elexon disclosed a cyberattack that compromised its internal IT infrastructure, including employee laptops and email systems, while the core electricity transmission systems remained unaffected. The incident was attributed to an unpatched vulnerability (CVE‑2019‑11510) in an outdated Pulse Secure VPN server that had been previously highlighted by security researchers. National Grid confirmed that the attack did not disrupt national power supplies, and Elexon proceeded to restore the affected systems after identifying the root cause.

Elexon’s role is defined by its statutory responsibility under the Electricity Act and its oversight by the Office of Gas and Electricity Markets (Ofgem), which regulates its performance as the market operator. Its distinguishing attribute lies in its specialised expertise in real‑time balancing and settlement, a function critical to maintaining system stability and market confidence. Additionally, the organisation is recognised for its data‑centric approach, providing high‑quality market information that supports efficient trading and regulatory compliance across the sector.