Most solar decisions start with the wrong question: an Eskom tariff comparison. “What’s the price per kWh?” But solar, whether owned outright […]

How commercial and industrial sites should think about energy independence, resilience, and long-term cost. Modern C&I operations—manufacturing, logistics, retail centres, cold storage, mining—depend on one thing above all else: Stable, predictable power. But between tariff increases, power outages, diesel volatility and rising sustainability targets, many businesses are asking a simple question: Should we stay grid-connected, […]

Battery storage has become the buzz term in the solar market. For many businesses, batteries were about surviving load-shedding….until that stopped. However, the true value that batteries represent is not hanging around on standby to provide back-up. They’ve become a financial tool — one that can lower your electricity bills and strengthen your energy security. […]

…and why O&M matters — even if we didn’t build your system As more commercial and industrial sites transition to solar, the value conversation is shifting. It’s no longer just about the build. It’s about how well the system performs — and how long it lasts. Traditionally, solar projects are delivered in separate parts: EPC […]

The approved tariffs become effective from 1 July 2025, which will reflect on customers’ electricity bills in August. What’s changed? Fixed charges (service and capacity) – 18.3% – and demand charges (kVA) – 17.9% – have increased at a higher rate than variable charges (kWh) – 10.3%-. It is clear that the City of Joburg […]

Is solar worth the investment for commercial and industrial businesses in South Africa? At Nesa Power, it’s a question we hear a lot—and it’s a fair one. With so much talk about sustainability, rising electricity costs, and new technologies, business owners want clarity. The good news? We’ve got data. And it tells a compelling story. […]

Powering Your Projects: How Smart Financing is Reshaping South Africa’s Energy Future A few years ago, energy decisions were straightforward—but frustrating.You either paid millions upfront to install your own energy system… or crossed your fingers and hoped Eskom would keep the lights on. Today, things look a little different. Load shedding may be more sporadic, […]

Unpacking the Power of Renewable Energy in South Africa Most people are aware of the term lithium-ion or Li-ion battery. But how do these batteries work? Li-ion batteries compose of cells in which lithium ions move from the negative electrode through an electrolyte to the positive electrode during discharge and the opposite way when charging. […]

As we have explained in a previous blog, battery technology is improving, and costs are coming down. In this blog we look at the main technologies available, particular when it comes to Commercial & Industrial applications. At Nesa we recommend two technologies, depending on the customer’s specific needs, budget and timeframe – Vanadium Flow and […]

There is no doubt that with the technological improvements and the decreasing cost of battery storage, it is becoming an attractive proposition when it comes to Commercial & Industrial solar systems. Whilst this technology has been employed to a significant extent in the residential market, the high CAPEX requirement related to the application of batteries […]