Millions of people across Southern Africa wake each day to the same problem: the lights may not come on, and if they do, they may not stay on. The region’s electricity crisis is not a shortage of generating capacity. It is a failure to move power from where it exists to where people need it.
Southern Africa holds more than 4GW of surplus generating capacity, nearly six times Botswana’s entire peak electricity demand. That power sits stranded in Angola, South Africa, Mozambique and Tanzania while neighbouring countries remain in deficit. The barrier is transmission. The physical network to carry electricity across borders simply does not exist at the scale required. In April alone, more than half of the electricity that buyers and sellers were ready to trade could not flow because the grid lacked the capacity to carry it.
The consequences reach into every corner of daily life and economic ambition. Agricultural transformation depends on irrigation, cold storage and processing facilities, all of which require reliable electricity. Industrialisation cannot take hold on an unstable grid. The region’s critical mineral deposits cannot be mined or processed without power-intensive operations. Almost every prospect for economic development in Southern Africa runs directly into this transmission crisis.
The architecture for regional power-sharing already exists. The Southern African Power Pool provides a market through which electricity can be traded across borders, and volumes on its competitive markets grew by almost 70 percent last year, demonstrating both demand and willingness to trade. What is missing is the physical infrastructure to fulfil those trades.
The region’s energy resources are naturally complementary. Botswana and Namibia have abundant sun. Zambia and Angola possess hydroelectric resources. Mozambique has gas. South Africa offers a broad generation mix. When drought strikes one country, a plant fails in another, or demand surges elsewhere, power should be able to move to where it is needed. That interdependence could give all countries greater energy security than twelve separate attempts at self-sufficiency.
A new model is beginning to emerge. Privately financed generators are being built to sell directly into the regional market rather than relying on long-term contracts with national utilities. Botswana’s 100MW Tati Solar Project is the first utility-scale merchant solar plant in the country, bypassing the traditional arrangement under which a national utility commits in advance to purchase power. Merchant generation barely existed in the region two years ago. Today, several hundred megawatts are in the pipeline.
By contrast, too many planned interconnectors remain trapped in feasibility studies, environmental assessments and financing discussions. ZIZABONA, one of the region’s most important planned interconnectors, would link Zambia, Zimbabwe, Botswana and Namibia. It was first agreed nearly two decades ago and has not yet moved into construction. Southern Africa has spent years proving that these interconnectors make economic sense. What is needed now is action.
Botswana has begun to act. In 2025, the country reached agreements with Zambia, South Africa and Namibia to expand electricity trading capacity. In March 2026, it secured funding to advance new interconnectors with Zambia and Namibia and to revive the long-planned link with South Africa. Simultaneously, Botswana is reforming its electricity market to open the grid further to independent generators and allow private providers to invest in and develop new transmission infrastructure.
Botswana’s geography positions it as a critical node in a more integrated regional system. It sits between South Africa, the region’s largest electricity market, and Namibia, Zambia and Zimbabwe, making it a natural crossroads for power moving across the subcontinent. By 2029, Botswana is targeting generation capacity more than ten times its current peak demand, with major projects already moving from plans into construction.
The next decade cannot resemble the last. SADC governments must treat cross-border transmission lines as strategic public infrastructure, accelerating permitting and financing, coordinating approvals across borders and moving viable projects from feasibility into construction. Southern Africa has no shortage of interconnector studies (the ZIZABONA experience alone makes that plain). What the region now needs are deadlines for delivery. The prize is not simply more electricity traded across borders, but the investment, industry and jobs that reliable power makes possible for ordinary citizens across the region, and the question is whether governments will move fast enough to claim it.