Electricity transmission: ENGIE supporting the growth of electrification worldwide

Electricity transmission networks carry power from generation sites to distribution networks. They play a critical role in ensuring energy supply, system reliability and the integration of renewable energy. The needs are considerable: according to the International Energy Agency (IEA), current grid capacity will need to double to connect new generation sites and support the increasing electrification of uses.

ENGIE has successfully entered this sector, winning more than ten tenders in less than a decade to build 8,000 km of high-voltage lines and substations in Brazil, Chile and Peru.

We operate in countries experiencing strong urban and industrial growth, where electricity demand is rising rapidly and regulatory frameworks are stable and investment-friendly.

This rapid expansion gives us confidence in achieving our target of 10,000 km of high-voltage lines by 2030 and supports our ambition to expand into electricity distribution.

Acquisition of UK Power Networks

In May 2026, ENGIE acquired UK Power Networks, a company that distributes electricity to 8.5 million households in London, the South East, and the East of England.
By welcoming UK Power Networks’ 6,500 employees and its 192,000 km network, we are significantly strengthening our position in regulated infrastructure.

Significant infrastructure needs

According to the IEA, insufficient transmission capacity remains a major constraint on the development of power systems, electrification and energy security. Grid infrastructure is struggling to keep pace with the integration of new renewable energy sources.

This gap leads to delays in project deployment: in 2024, the IEA identified 1,650 GW of solar and wind projects at an advanced stage awaiting grid connection.

In addition, 750 million people worldwide still lack access to electricity, 80% of them in sub-Saharan Africa.

The agency estimates that nearly 80 million kilometers of power lines will need to be added or upgraded by 2040 – equivalent to the total length of today’s global grid. To achieve this, investment will need to double, reaching around $600 billion per year by 2030.

Networks: a core component of ENGIE’s business model

The development of electricity networks is fully aligned with ENGIE’s mission to accelerate the energy transition and build a more resilient system. It is also consistent with its utility model, which relies heavily on regulated activities.

Transmission and distribution infrastructure are based on long-term concessions and generate predictable revenues. This stability provides a solid foundation for securing investments in renewable energy.

Tools to ensure system balance

The balance between electricity supply and demand must be maintained at all times; even brief imbalances can destabilize the grid. To ensure real-time balance and system security, ENGIE develops flexibility solutions alongside transmission infrastructure, including batteries, pumped hydro storage and thermal power plants. We also rely on advanced digital tools, such as drones to monitor lines and pylons, and artificial intelligence to better anticipate production and consumption.