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Power in reserve: How energy storage will make or break SA's renewable transition

The Star

|

April 30, 2025

SOUTH Africa's energy system is at a crossroads, facing a worsening electricity crisis, rising demand, and ambitious decarbonisation goals.

Power in reserve: How energy storage will make or break SA's renewable transition

While renewable energy is rightly heralded as a key solution, it is often misunderstood as the silver bullet to enable sustainable power generation. In truth, generation alone won't solve the country’s energy woes.

The real missing link in South Africa's energy puzzle is storage.

Despite steady progress in solar and wind adoption, these clean energy sources are, by nature, intermittent. Solar panels don't generate power at night, and wind turbines are silent on still days.

Yet our demand for electricity doesn’t follow the weather, but rather daily routines, industrial activity, and seasonal fluctuations. This mismatch between supply and demand is at the heart of South Africa's ongoing energy instability.

Load-shedding, now a near-daily occurrence in many parts of the country, is no longer just a technical inconvenience; it's a national threat to productivity, investment, and livelihoods.

While adding generation capacity is part of the solution, it is only effective if that energy can be stored and dispatched when needed.

Without storage, surplus power generated during peak sunlight hours is wasted, and the grid remains vulnerable to sudden demand spikes or generation failures.

Storage enables ‘load-shifting’, the ability to absorb excess energy and release it later, during evening peaks or grid outages.

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