Rooftop solar in South Africa tops 8.3 GW as market shifts from outage response to cost savings

South Africa’s rooftop solar capacity has passed 8.3 gigawatts (GW), driven now more by the economics of high grid tariffs than by the rolling blackouts that sparked the initial rush to install panels.

From crisis response to cost-driven investment

Rooftop installations grew steeply during the peak load-shedding years of 2022 and 2023, although rolling blackouts effectively ended in early 2024. Despite the easing of outages, installations have continued as steep Eskom tariff increases have made on-site solar cheaper than grid electricity for many households and businesses.

Household adoption and national capacity

Official survey data show 675,000 households had solar panels in 2025, an 86% increase over three years. More than two-thirds of those households are in Gauteng and the Western Cape. Nationally, total installed solar capacity has passed 10 GW after about 1.6 GW was added last year, making South Africa the continent’s largest solar market.

Industry view: solar as an investment

Solar industry founder Marius Rudolph said the market’s character has changed:

“South Africans no longer view solar as simply a backup solution. It has become an investment in financial freedom, energy security and long-term sustainability,”

and added that customers now focus on cutting monthly bills, protecting against future tariff increases and integrating battery storage.

Regulatory and utility measures

Eskom has moved to register small-scale private installations. The utility extended a registration fee waiver for systems up to 50 kVA until September 30, waiving connection fees and providing a free smart meter valued at up to R10,000 for urban customers and R36,000 for rural customers. Agnes Mlambo, Eskom acting group executive for distribution, said:

“We recognise the important role customers play in South Africa’s energy transition. Our goal is to ensure installations are safe, compliant and aligned with protecting the national grid,”

Outlook

Industry analysts cited in the source expect continued market growth through 2026, driven by falling technology costs, improved financing options and ongoing tariff pressure. Rudolph characterised the shift as permanent:

“Renewable energy is no longer the future it is the present,”

adding that solar creates lasting value for families and businesses.