Johann Rupert’s EXSA Disrupts Energy Market with Cheaper, Greener Power Than Eskom

Johann Rupert’s Remgro-backed renewable energy venture, EXSA, is rapidly becoming a game changer in South Africa’s power market. As businesses grapple with load shedding and rising utility costs, EXSA is providing companies with a more reliable and affordable green energy alternative.

EXSA—formerly the Energy Exchange of Southern Africa—is a licensed electricity trader bringing together a wide network of renewable energy producers and energy buyers. Backed by both Remgro and Rand Merchant Bank (RMB), the platform allows businesses to buy electricity directly from Independent Power Producers (IPPs), bypassing traditional grid challenges and offering cost savings over Eskom tariffs.

The model is simple yet powerful: generators feed surplus energy into the national grid, and customers draw what they need. EXSA monitors real-time consumption and billing, offering flexible contracts and predictable pricing—unlike the volatile rates and power disruptions many South African businesses have endured under Eskom.

How EXSA Works

EXSA’s blended energy model aggregates renewable electricity from multiple sources—mainly wind and solar—to create a consistent and reliable supply for businesses. If one supplier dips, the exchange routes energy from another source, reducing risk and maintaining steady prices.

The platform also offers a unique advantage: clients are not penalized for surplus energy thanks to EXSA’s aggregated agreement with Eskom. This ensures a smoother, more cost-effective experience for businesses managing complex energy needs.

A Strategic Push for Clean Energy

Since gaining its license from NERSA in 2022, EXSA has been expanding steadily. By mid-2023, the company was actively supplying energy to South African firms. Under the leadership of CEO Wayne Cowie—appointed in October 2024—and a dynamic executive team, EXSA rebranded, launched a new website, and committed to pushing South Africa toward a greener future.

“We bring together a wealth of experience across energy, infrastructure, finance and technology, united by a shared vision for a sustainable future,” the company said.

Lower Emissions, Lower Costs

EXSA says it enables companies to lower their carbon footprint and meet Net Zero targets without sacrificing affordability. In fact, the platform often delivers lower energy prices than Eskom, all while helping customers dodge load shedding and reduce reliance on fossil fuels.

“We make our customers’ green energy procurement experience seamless, sustainable and cost-effective,” EXSA added.

Tech and Storage Solutions

The company is now exploring energy storage solutions to enhance reliability and efficiency even further. It is also leveraging analytics and smart design tools to tailor energy portfolios based on each client’s unique consumption profile.

Whether it’s a multinational, manufacturer or SME, EXSA is fast positioning itself as South Africa’s leading marketplace for grid-connected renewable energy.

For businesses tired of unpredictable price hikes and power failures, Johann Rupert’s EXSA could be the future-proof solution they’ve been waiting for.

{Source: BusinessTech}

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