Current State of the Grid (2025–2026)

After years of rolling blackouts that damaged the economy and daily life, South Africa's electricity system has made a dramatic recovery. The country entered 2026 with its strongest and most reliable grid in five years, driven by Eskom's Generation Recovery Plan launched in April 2023.

The improvement is measurable. The Energy Availability Factor (EAF) — the share of time Eskom's fleet can produce electricity — reached 69.14% in December 2025, up 12.57% from the same month in 2024. The fleet hit or exceeded the 70% benchmark on 49 occasions during 2025. Unplanned outages have dropped by over 5,500 MW year-on-year, and diesel spending has fallen dramatically as emergency generation is no longer routinely needed.

The recovery is attributed to intensive planned maintenance on the ageing coal fleet, better operational discipline, reduced emergency interventions, and the steady addition of renewable and nuclear capacity. While the system is structurally stronger, Eskom and analysts caution that vigilance is still required — the fleet is old, and complacency could reverse the gains.

Coal — The Backbone

Lethabo Power Station, Mpumalanga. Photo by Robosk, licensed under CC BY-SA 4.0

Coal is the backbone of South Africa's electricity supply. The country sits on abundant reserves, particularly in Mpumalanga province, and since the mid-20th century has built numerous large coal-fired stations that collectively provide the bulk of electrical output — historically around 74–85% of generation. Plants like Medupi and Kusile (each ~4,800 MW) and longstanding stations such as Kendal, Majuba, and Lethabo (each 3,600–4,100 MW) rank among the largest coal-fired stations in the world.

Most coal stations are located near the mines in the northeast, minimising transport costs. Coal power has historically given South Africa access to cheap electricity, but it comes with heavy environmental costs (greenhouse gas emissions and air pollution) and ageing plants have become increasingly unreliable due to deferred maintenance — a root cause of the load shedding crisis.

Nuclear — Koeberg Power Station

South Africa operates the only nuclear power plant in Africa — the Koeberg Nuclear Power Station, located 30 km north of Cape Town. Its two pressurised water reactors provide a combined 1,860 MW of clean baseload power, contributing 4–5% of national electricity generation since coming online in 1984–85.

Koeberg's location near Cape Town reduces reliance on long-distance transmission from coal stations in the northeast and provides vital voltage stability to the Western Cape grid. The plant sits within a 3,000-hectare nature reserve and has earned over 14 NOSCAR safety awards. South Africa's IRP 2025 keeps the door open for new nuclear capacity, though large-scale projects remain uncertain given cost and the availability of cheaper renewables.

Solar & Wind — The Fastest-Growing Sources

Solar Power

South Africa is blessed with abundant sunshine — it receives more than twice as much solar radiation as Germany, where solar is already widely deployed. The country averages over 2,500 hours of sunshine per year, with solar irradiance of 4.5–6.5 kWh/m². Utility-scale solar farms and rooftop installations have made solar the fastest-growing energy source in the country.

Khi Solar One, a concentrated solar power tower in the Northern Cape. Photo by Planet Labs, licensed under CC BY-SA 4.0

By 2023, installed solar PV capacity reached approximately 7.8 GW — nearly 50% of all installed solar on the African continent. Embedded (rooftop) PV capacity has almost doubled that of utility-scale PV, as homeowners and businesses installed panels both for cost savings and as insurance against load shedding. Solar contributed roughly 8% of total electricity output in 2024, making it the largest clean energy source.

Wind Power

Strong wind corridors along the Eastern Cape and Western Cape coastlines have driven rapid growth. By 2023, installed wind capacity reached approximately 3,442 MW across 34 operational wind farms, with an additional 1.3 GW under construction and 53 GW in the development pipeline. Wind contributed about 5% of total generation in 2024. South Africa accounts for over 39% of Africa's total wind capacity.

The Renewable Energy Independent Power Producer Procurement Programme (REIPPPP), running since 2011, has attracted R292 billion in investment into nearly 15,000 MW of wind and solar capacity, with about half currently under construction. The programme has made South Africa a magnet for both local and international clean energy developers.

Hydropower & Pumped Storage

Hydropower plays a modest role in South Africa's energy mix due to limited rainfall and river systems. Total installed hydropower capacity is only around 2,300 MW — a small fraction of the national total. In 2022, hydro (including pumped storage) accounted for roughly 3% of electricity generation.

A significant portion of that capacity comes from pumped storage schemes rather than natural river flow. Facilities like Drakensberg (1,000 MW) and Ingula (1,332 MW) use off-peak electricity to pump water uphill, then release it to generate power during peak demand. They act as giant batteries, critical for grid stability but not creating new energy — they store energy produced by other sources. Small conventional stations like Gariep and Vanderkloof on the Orange River contribute modest additional capacity.

Regional Imports

South Africa is part of the Southern African Power Pool (SAPP), a regional grid network enabling electricity trade. The most significant import is hydropower from Mozambique's Cahora Bassa Dam on the Zambezi River, delivered via a 1,920 MW HVDC transmission line. In 2022, South Africa imported about 10,800 GWh — roughly 5% of consumption.

Key Statistics

The Crisis Years & What Went Wrong

Since 2007, South Africa has suffered rolling blackouts — locally called "load shedding" — due to insufficient generation capacity, ageing infrastructure, and maintenance backlogs. Outages are scheduled in stages (Stage 1 to 8), each removing 1,000 MW of demand. The crisis peaked in 2023, when power cuts occurred on 332 of 365 days, reaching Stage 6 and devastating the economy.

Root Causes

The Recovery Timeline

Coping with Load Shedding

Although load shedding has largely stopped, South Africans have built up extensive coping infrastructure over the crisis years — and it's worth understanding these systems as a visitor, since they remain in place and are occasionally needed.

Tips for Tourists During Outages

With load shedding largely behind South Africa, visitors in 2026 are unlikely to experience blackouts — but it's smart to be prepared, just as you'd carry a rain jacket "just in case." Here's what to know:

Map of Major Power Stations

Future Outlook & IRP 2025

South Africa is at a crossroads in its energy journey. The cabinet-approved Integrated Resource Plan 2025 (IRP 2025) is the most ambitious energy blueprint the country has ever produced, committing to 105,000 MW of new generation capacity by 2039 — two-and-a-half times Eskom's current fleet.

Nearly 80% of new capacity is renewable — a far greater proportion than any previous energy plan. Electricity Minister Ramokgopa has described IRP 2025 as a "pivot" from greenhouse gas emissions, while also arguing it doesn't mean abandoning baseload coal. The plan includes 16 GW of gas-to-power and keeps the door open for small modular nuclear reactors.