Powering the Future: Unleashing the Potential of Commercial Storage in South Africa


South Africa grapples with grid instability, marked by rolling blackouts and congestion. The South African Energy Crisis rages on with instances of power disruptions occurring as often as three to four times daily, with durations ranging from 2.5 to 4.5 hours, and, during widespread outages, extending to multiple days. In the face of this challenge, businesses are seeking reliable and environmentally conscious alternatives for power backup. This blog explores the shortcomings of traditional backup solutions like diesel generators and Uninterruptible Power Supply (UPS) and delves into the transformative potential of commercial storage (also referred to as commercial batteries).

The Downfalls of Diesel Generators and UPS:

  1. High Maintenance Requirements: Diesel generators and UPS systems come with substantial maintenance needs. From regular fuel refills to maintenance, the operational costs can quickly escalate.
  2. Environmental Concerns: Diesel generators are not only noisy but also contribute to pollution making them an undesirable choice for environmentally conscious consumers. The shift towards green energy solutions becomes imperative in this context. From a health perspective, diesel exhaust contains a mixture of harmful pollutants, including nitrogen oxides (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs). Prolonged or high levels of exposure to these pollutants can have adverse effects on health which is why they need to be operated in well-ventilated areas to minimize exposure. The shift towards green energy solutions becomes imperative in this context.
  3. Integration Challenges with Solar Systems: Both diesel generators and UPS systems face challenges when integrating with commercial solar systems. The lack of seamless compatibility restricts the optimization of energy consumption. It also hinders the ability to sell excess energy back to the grid or maximize self-consumption.

The Case for Commercial Storage:

  1. On-Site Storage Solutions: Commercial solar batteries offer on-site storage, providing businesses with a reliable and sustainable backup power source. This reduces the reliance on noisy generators and reduces the environmental impact associated with diesel power.
  2. Seamless Integration with Solar Systems: Unlike traditional backup solutions, commercial solar batteries seamlessly integrate with solar panel systems, allowing businesses to optimize energy consumption. This integration facilitates the selling of excess energy back to the grid and enables strategies like peak shaving.
  3. Considerations for Installation: Customers must consider the installation location of the commercial solar battery. For outdoor installations, a IP65 rating is recommended to ensure the system’s durability against dust and water ingress. Indoor installations, on the other hand, can suffice with an IP20 rating (anything lower than IP44 should only be used indoors).
  4. Grid Independence and Optimization: Commercial solar batteries empower businesses to be less reliant on the grid. They provide the flexibility to store energy during off-peak hours and utilize it during high-demand periods, reducing dependence on the grid during congestion or blackouts.
  5. Financial Incentives: Commercial solar batteries open avenues for financial benefits through grid interaction. Businesses can participate in demand response programs, sell excess energy back to the grid, and potentially reduce electricity bills by optimizing their energy usage.

Reaping the Benefits of Commercial Storage: Vergelegen Wine Estate’s Solar Revolution

Vergelegen, the iconic South African winery founded on February 1, 1700 and is renowned for its timeless elegance as it is for its unwavering commitment to innovation. With over 320 years of history, one might expect a tendency towards comfortable tradition. But Vergelegen defies the script. As the South African energy crisis casts an uncertain shadow, Vergelegen made a bold move investing in a solar system combined with commercial storage. This is not just a luxury upgrade; it’s a strategic maneuver. South Africa’s unreliable national grid poses a significant threat to Vergelegen’s production and profitability. Load shedding disrupts operations, jeopardizing temperature-sensitive fermentation and delicate product quality. With traditional backups proving inadequate, Vergelegen sought a robust, future-proof solution. Vergelegen’s solar installation includes 500 panels covering 1,400 square meters. The installation includes three inverters and a 1MWh battery.

..the cellar will run 100% off the solar plant”“The difference in carbon emissions will be determined over time,  but the entire electricity bill for the cellar will be saved as the cellar will run 100% off the solar plant,” says Vergelegen environmental project manager, Eben Olderwagen. “There will also be the  diesel cost saving and no emissions from the generator during loadshedding.

Vergelegen, anticipates additional significant financial savings as the winery limits the need for conventional grid electricity.


In a country facing grid instability, the adoption of commercial storage emerges as a transformative solution for businesses seeking reliable, environmentally friendly, and financially viable power backup options. Moving away from the limitations of diesel generators and UPS systems, these batteries offer a future-proof approach to energy resilience, seamlessly integrating with solar systems and providing a sustainable path towards grid independence.

Final Thoughts on Commercial Storage:

As South Africa grapples with ongoing grid challenges, the transition to commercial storage represents a pivotal step towards a more sustainable and resilient energy future. Businesses investing in these solutions not only secure a reliable power backup but also contribute to a greener and more efficient energy landscape. The time is ripe for enterprises to embrace the potential of commercial solar batteries, fostering a future where energy security aligns seamlessly with environmental consciousness and financial prudence.


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