Transmission infrastructure: Africa’s quintessential energy link

Africa’s energy transition is often framed through the lens of generation: new renewables projects, faster grid connections, industrial demand, community access, and economic growth. But generation alone cannot power growth. Electricity must move safely, reliably, and at scale to reach the people, industries, and services that depend on it.

This is why transmission infrastructure deserves more attention in Africa’s energy transition. It is not always the most visible part of the electricity system. Power stations, solar plants, wind farms, and substations tend to attract more attention, while transmission lines are often passed by with little thought about what they make possible. Yet hospitals, mines, factories, data centres, railways, communities, renewable energy projects, and more, all depend on the same basic requirement. Electricity must be transported from where it is generated to where it is needed.

Generation Alone Isn’t Enough

In my work on overhead transmission lines, the challenge is often both practical and strategic. Africa needs new electricity supply, but it also needs the corridors, structures, lines, and engineering capability that enable that supply to move over long distances and across difficult terrain. The pressure increases as renewable generation grows. Renewable resources are not always located close to demand centres. Wind, solar, hydro, and other generation opportunities may sit far from major cities or industrial loads. If the transmission network is not strengthened at the same time, new generation can face delays, be underused, or have limited ability to support the wider system. Transmission is also about more than new lines. In many markets, existing transmission corridors need to be upgraded, reinforced, or adapted to carry more power and improve reliability. Utilities and grid operators need to make careful decisions about where to build, where to strengthen, and how to balance immediate connection needs with long-term network planning.

The Overlooked Lines Carry the Transition

Overhead lines may look simple, but in practice, they are complex engineering assets. Route selection, terrain, tower design, conductor choice, clearances, environmental conditions, standards, access, constructability, and stakeholder engagement all affect whether a line can be designed and delivered successfully.

A transmission line does not exist only on a drawing. It crosses farms, communities, roads, rivers, mountains, and sensitive environments. It has to perform in harsh weather, withstand electrical and mechanical stresses, and remain reliable over decades. That is why the engineering behind transmission cannot be treated as a secondary issue. Small design decisions can have long-term consequences for reliability, maintenance, cost, and safety.

Transmission work needs engineers who understand both international standards and local realities. Different markets may apply different design requirements, and international clients often have their own ways of working. A strong transmission team has to understand those requirements without losing sight of proven engineering judgement.

High-Voltage Capability Supercharges the Future

South Africa has developed significant high-voltage transmission capability, including experience in 400 kV and 765 kV overhead line design. That experience is valuable because moving large volumes of electricity over long distances will become more important as power systems evolve. This 765 kV experience is particularly relevant because not every market has developed transmission capability at that voltage level. For African teams, this creates an opportunity to contribute expertise not only locally but also to international markets where high-voltage transmission is becoming more central to grid planning.

At WSP in Africa, part of my role has been to help grow overhead line capability. The team has expanded quickly and is already supporting work across African and international markets. As transmission skills become more sought after globally, the ability to combine local experience with international standards gives clients access to engineering capacity that is both practical and adaptable.

Transmission Needs Africa’s Engineers

One of the sector’s challenges is that transmission is not always seen as an exciting engineering field. Many young engineers are drawn to areas that appear more visible or more technology-led. But the electricity value chain depends on infrastructure that often sits behind the scenes.

For me, that is part of what makes transmission rewarding. It is not always the asset people notice first, but without it, very little else in the electricity system can do what it is meant to do. Renewable energy, industrial growth, electrification, regional power trade, and grid resilience all depend on transmission corridors that are planned, designed, and maintained with long-term system needs in mind.

Africa’s energy transition will require new generation capacity, investment, and stronger grid planning. It will also need transmission corridors that can carry electricity where it is needed, and engineers who can design those corridors with the right balance of technical quality, cost, reliability, and context.

Transmission is the quintessential link that turns generation into usable power. For Africa’s energy transition to deliver growth, resilience, and access, transmission corridors must be treated as strategic infrastructure not background equipment.