South Africa’s Electricity Landscape: May 2025 Snapshot and Longer‑Term Trends
According to the latest release from Statistics South Africa (Stats SA), the country’s electricity sector showed mixed signals in May 2025. While generation slipped year‑on‑year, month‑to‑month figures hint at a modest rebound, and provincial consumption patterns reveal stark regional disparities.
Generation and Distribution Overview
Stats SA reported that electricity generation fell 9 % year‑on‑year in May, but rose 0.6 % compared with April. On a seasonally adjusted basis, generation was 2.2 % lower in the three‑month period ending May than in the preceding three months.
Electricity distributed to consumers across the nine provinces declined 4.3 % year‑on‑year in May. The drop was led by the Northern Cape, where supplies slipped 24.3 %. Other notable declines were recorded in the North West (‑15.5 %) and Limpopo (‑10.9 %). In contrast, Gauteng and the Eastern Cape saw modest increases of 0.2 % and 1.1 %, respectively.
Consumption Patterns
Seasonally adjusted electricity distribution—or consumption—rose 1.5 % in May, following declines of 1.4 % in April and 2.3 % in March. The same‑adjusted electricity consumption rose 1.7 % over the three‑month window ending May with the previous three months.
- rose 1.5 % month‑on‑month in May;
- followed declines of 1.4 % in April and 2.3 % in March;
- and was up 1.7 % in the three‑month period to May versus the prior three months.
These figures suggest that while overall demand remains volatile, there are pockets of recovery, particularly in the more industrialised Gauteng region.
Role of Independent Power Producers and Regional Trade
Eskom continues to dominate the national mix, supplying roughly 86 % of South Africa’s electricity and about 20 % of the continent’s output. However, the renewable‑energy independent power producer (IPP) programme launched in 2011 has steadily increased its share. Independent generators now contribute an estimated 10‑15 % of the electricity fed into the national grid.
South Africa also participates in the Southern African Power Pool (SAPP). Imports, mainly from Mozambique’s Cahora Bassa hydro‑station and Zambia, grew 23.2 % year‑on‑year in May. Conversely, power outflows to neighbouring countries fell sharply, dropping 62.2 % over the same period.
Exports are typically directed to Botswana, Namibia, Lesotho, Eswatini and Zimbabwe, with volumes fluctuating according to domestic supply conditions.
Tariff Adjustments and Industrial Impact
Despite improvements in supply, consumers have faced persistent tariff hikes. In Johannesburg, the municipal utility City Power implemented an 8.63 % increase effective Wednesday, approved by the National Energy Regulatory Authority (Nersa). City Power’s acting CEO, Charles Tlouane, said the additional revenue is earmarked for maintaining ageing infrastructure, strengthening the grid, improving reliability and sustaining the free basic electricity programme for vulnerable households.
Historical data cited by Nersa shows that electricity tariffs have risen by more than 1,100 % since 2003. This steep climb has coincided with a contraction in industrial electricity sales, which fell from a peak of 71,629 GWh in the 2004/05 financial year to 43,153 GWh in 2024/25—a decline of roughly 40 %.
Looking Ahead
The Road Forward
The interplay of growing independent generation, regional trade via SAPP, and targeted tariff reforms will shape South Africa’s power sector in the coming months. Policymakers and utilities must balance the need for cost‑reflective pricing with measures that protect households and sustain industrial competitiveness. Continued investment in renewable IPPs, grid modernization, and demand‑side management will be critical to reducing reliance on volatile fossil‑fuel imports and mitigating the impact of global energy shocks.
Sources: Statistics South Africa (May 2025 release); National Energy Regulatory Authority (Nersa) tariff notices; City Power municipal announcements; Southern African Power Pool trade statistics.
