Stage 4 Load Shed Cost

What this index actually measures

The Stage 4 Load Shed Cost tracks what a typical household spends, loses or wastes during a month of Stage 4 load shedding. It is not your electricity bill. It is the extra money that leaves your pocket because the power goes off — money you would never have spent if the lights had stayed on.

We build the figure from three real costs that ordinary families carry. First, fuel for a small generator or inverter top-up: 4 litres of diesel a day, at R28.06 a litre, counted across 14 days in the month. Second, food spoilage of R180 — the meat that turns, the milk that sours, the leftovers you throw out after the fridge sits warm for hours. Third, R400 in lost productivity, mostly for the growing number of South Africans who work or run a side hustle from home and simply cannot earn while the power and the Wi-Fi are down.

Add those together and you land at about R2,150 for the month. The assumption underneath it is Stage 4 modelled as four-hour blocks, roughly six days a week. That is our own modelling choice for an average month, not a schedule handed to us by Eskom. This is a Chankura-derived estimate — we show the working so you can judge it against your own life.

• •Diesel: 4L/day x 14 days x R28.06/L
• •Food spoilage: R180/month
• •Lost WFH productivity: R400/month
• •Total: about R2,150/month at Stage 4

What is driving the 4.2% move this month

The index rose 4.2% month-on-month in May 2026. The biggest lever here is the diesel price. Fuel in South Africa is not set by the garage on the corner — it is adjusted on the first Wednesday of each month by the Department of Mineral Resources and Energy, working off the Central Energy Fund's calculations. Those are driven by the global oil price (quoted in US dollars) and the rand-dollar exchange rate. When either moves against us, the pump price climbs, and because diesel is the single largest slice of this index, the whole number follows it up.

It is worth being clear about what did and did not change. The diesel volume of 4 litres a day, the 14-day count, the food spoilage figure and the productivity loss are all held steady in the methodology. So this month's rise is overwhelmingly a fuel-price story, not a sign that the lights are off for longer. If load shedding deepens to higher stages or eases off entirely in a future month, that will show up too — but this particular move is about what it costs to run the generator, not how often you have to.

What R2,150 means for a real household budget

R2,150 a month is not a rounding error for most South African families. It is in the same league as a medium-sized grocery shop, a school transport bill, or a chunk of a bond or rent payment. Over a full year of intermittent Stage 4, you are looking at a five-figure cost that never appears as a single line item — it hides inside your fuel spend, your food waste and the income you quietly fail to earn.

The sting is that almost none of it is recoverable. You do not get a SARS rebate for a spoiled fridge, and the generator diesel buys you no asset — it just keeps the essentials breathing for four hours. For households already stretched by the PMBEJD food basket creeping upward and PAYE brackets that rarely keep full pace with the cost of living, this is the kind of invisible expense that turns a tight month into a short one.

It also lands unevenly. A family that already owns an inverter and a gas stove absorbs the food and fuel hit more cheaply, while a household with a baby, a chronic medication that needs refrigeration, or a single breadwinner who works online feels every rand of it — and sometimes more than the average shown here.

How people soften the impact

There is no trick that makes load shedding free, but South Africans have learned to blunt it. None of this is financial advice — Chankura just reports what works in practice and lets you decide what fits your home and your budget.

The cheapest wins tend to be the boring ones: knowing your area's schedule so you cook, charge and work in the on-windows; keeping the fridge and freezer shut during an outage so the cold holds; and freezing water bottles to buy your fridge a few extra hours. Beyond that, people weigh up gas for cooking, a small inverter or power station for the Wi-Fi router and a laptop, and only then a generator — because diesel, as this index shows, is the part that quietly bleeds you.

• •Track your local schedule and batch cooking, charging and deep-work into the on-hours
• •Keep the fridge and freezer closed; frozen water bottles extend the cold
• •Gas for cooking is usually cheaper per outage than running a generator
• •A small inverter or power station can cover Wi-Fi and a laptop for far less diesel than a full generator
• •Protect the costly items first: fridge contents, refrigerated medication, and your ability to earn from home

Frequently asked questions