10 Essential Hacks to Slash Your Eskom Bill

Rising energy costs and the persistent challenge of load shedding make power management non-negotiable for every South African homeowner. Getting smart about how you manage your hot water and plug-load can save you thousands and boost your home’s resilience.

Here are 10 essential energy hacks every South African homeowner needs to master today:

1. Stop the 'Phantom Power' Drain

Your television, microwave, and phone chargers are silently drinking power even when they're switched off. This is often called standby power, or "vampire power," and it's particularly wasteful as it drains electricity unnecessarily when the grid is operational.

• The Fix: Use a single power strip for entertainment centres and office setups. Switch the strip off at the wall when not in use.

2. Water-Wise, Power-Smart: Install Low-Flow Fixtures

Every drop of hot water you save is energy saved at the geyser. Installing low-flow fixtures is one of the most effective ways to reduce your geyser’s workload without sacrificing shower pressure.

• The Fix: Replace old showerheads with low-flow or aerated models. Also, check and repair any dripping hot water taps immediately, as every leak forces the geyser to reheat water unnecessarily.

3. Attack the Geyser: Lower the Temperature

Your geyser is often the single biggest electricity consumer in your home. By default, many are set too high (around 65°C to 70°C).

• The Fix: Lower your geyser temperature setting to around 55°C. This is still safe and comfortable, but significantly reduces the energy required to maintain the heat, saving you money and valuable backup power during outages.

4. Close Curtains for Climate Control

In the South African climate, windows are huge conductors of heat in summer and cold in winter.

• The Fix: During hot summer days, close curtains and blinds to block the harsh sun and prevent your home from overheating. In winter evenings, close them at dusk to trap any ambient heat inside.

5. Insulate Your Hot Water Pipes

Heat loss from uninsulated hot water pipes is constant and costly, forcing your geyser to work harder to replace the energy lost in the journey to your taps.

• The Fix: Wrap any exposed hot water pipework between the geyser and taps with foam insulation tubing. This low-cost measure is highly effective in reducing constant heat loss.

6. Full Loads Only

Washing machines and dishwashers use the same amount of energy whether they're half-empty or completely full.

• The Fix: Wait until your appliances are completely full before running a cycle, and always use the lowest effective temperature setting (often 30°C or even cold wash cycles).

7. Time Your Geyser Usage

Switching your geyser on only when you need it can drastically reduce your consumption, especially if you have an inverter or solar system.

• The Fix: Install a digital geyser timer. Schedule it to heat water an hour or two before peak usage times (mornings and evenings) and then turn it off for the rest of the day.

8. Optimise Your Fridge and Freezer

Your fridge and freezer are essential appliances that run 24/7, making their efficiency crucial for managing your baseline electricity usage, especially during outages.

• The Fix: Ensure there is adequate space around the unit (especially behind it) for ventilation. Regularly clean the condenser coils (usually at the back or bottom) to allow heat to dissipate efficiently. If the coils are covered in dust, the unit has to work much harder.

9. Switch to LED Lighting

If you still have any old halogen or incandescent bulbs, they are generating more waste heat than light. This is critical during load shedding, as LEDs draw minimal power from your backup battery or inverter.

• The Fix: Replace all bulbs with LED alternatives. They use up to 90% less energy and last much longer.

10. Prioritise Inverter and Solar Systems

When buying or selling, an installed power backup system is the most valuable efficiency and resilience feature a home can possess.

• The Fix: If buying, prioritise homes with backup power. If you are selling, ensure your installed solar/inverter system is prominently displayed in the listing and during viewings.