If you paid R2,500 for electricity and R4,000 for diesel in 2025, do you realize what you paid for that same R6,500 in 2026?

R8,225. A 26.5% jump — in one year.

Electricity crept up around 9%, in line with Eskom's approved tariff increases. Diesel is the one that really moved — up nearly 40%, driven by a genuine oil shock as the escalating Iran conflict pushed global crude prices sharply higher. Nobody saw that coming in 2025. That's exactly the point.

I've spent years in this industry, and I've watched it play out in account after account — client after client wondering where the money went and why the household budget doesn't add up anymore.

Nothing about that R6,500 was exotic. It was just normal life. Now look at what an even longer stretch of time — the last decade — actually did to those two numbers.

What the Last 10 Years Actually Cost Us

I'm not going to pull a scary number out of the air. Here's the real, sourced history:

• Electricity: Eskom tariffs rose from roughly 86c/kWh in 2016 to about 234c/kWh in 2026 — a 172% increase, nearly three times general inflation over the same period.
• Diesel: Inland diesel moved from around R11.50/litre in 2016 to roughly R27.50/litre in 2026 — a jump driven by currency moves, global oil shocks, and everything in between.

That works out to compound annual growth of about 10.5% for electricity and 9.1% for diesel. Nobody predicted the exact events that drove those numbers — load shedding, Eskom's debt crisis, currency swings, global oil shocks. We didn't know what was coming. We just know what happened.

Applying the Same Math Forward

Here's the honest part: I can't predict the next 10 years any better than anyone predicted the last 10. But I can do the one thing that's actually defensible — apply the realized rate we know happened, and see where it leads if the pattern simply continues.

For this R2,500 / R4,000 family:

That's a 151% increase in the family's combined energy and fuel bill over a decade — not a forecast, not a scare tactic, just the same math the last 10 years already proved out, run forward. If anything changes — better or worse — it'll be a genuine surprise, in either direction. That's the nature of not knowing the future. But "the trend continues" is the most honest assumption anyone can make with the data we have.

Flip the Model: Turn the Trend Into an Asset

You don't have to sit back and absorb these increases. Switching to solar power and an EV doesn't just soften the blow — it changes which side of the trend you're on.

Instead of buying increasingly expensive power from the grid and fuel from the pumps, you produce your own energy on your roof and use it to run your home and your vehicle.

Knock R400 off your base electricity bill through solar, and cut your monthly fuel bill in half by charging an EV at home — that's roughly R2,400 back in your pocket from day one, before a single rand of the future increases even happens.

Redirect that R2,400 into a modest investment account instead of spending it, and compounding does real work over time. It's not a guarantee — markets move — but even a conservative return turns avoided cost into real accumulated wealth over a decade, on top of what you've already saved by not paying the increases in the first place.

Why We Built This as a Rental, Not a Sale

When people see numbers like these, the instinct is to reach for a credit card or a second bond and buy the hardware outright. I'd think twice before doing that.

Battery technology has come a long way — modern systems now routinely carry 10-year warranties with realistic working lives well beyond that. So the old "batteries degrade fast, that's why you rent" pitch isn't the real reason anymore, and I'm not going to pretend it is.

The real reason to rent from us instead of buying outright is simpler: capital efficiency and risk transfer.

• Cash-flow positive from day one. Your monthly rental is designed to be smaller than what you were already spending on grid power and diesel — you save money immediately, without tying up six figures of your own capital.
• We carry the technology risk. If a component underperforms, needs servicing, or gets superseded by something better, that's on our books, not yours.
• Predictable planning. You lock in your monthly cost. The grid and the fuel pump don't offer you that.

If you have spare capital sitting idle and no better use for it, buying outright can make sense — I'm not going to tell a sophisticated buyer otherwise. But for most families and businesses, keeping that capital free while still escaping the trend is the better trade.

Beyond the Math

Even if you never invest a single rand of what you save — even if it just covers groceries, or a night out, or clears a bit of debt — the real value here is what it does to your stress levels.

Knowing that the next fuel shock or tariff announcement won't blow up your household budget is worth something money doesn't usually buy: peace of mind.

The era of steadily climbing grid and fuel costs isn't ending because we say so — it's ending because the last 10 years already showed us where it was headed, and the next 10 aren't likely to reverse course on their own. Stop absorbing the increases. Start producing your own.