If you've lived in South Africa over the past few years, you know load shedding too well. The good news is that there are practical, cost-effective solutions — from a simple UPS to a full solar system. Let's break it down.
Option 1: UPS (Uninterruptible Power Supply)
A UPS is a battery backup that kicks in the moment the power goes off. It's ideal for sensitive electronics like computers, modems, and TV decoders. It won't power your whole home, and runtime is limited (usually 30–60 minutes), but it's affordable and easy to install. No electrician required for basic models.
Option 2: Inverter + Battery Bank
An inverter converts DC battery power to AC mains power, allowing you to run lights, fans, TVs, decoders, and even small fridges during load shedding. A battery bank (lead-acid or lithium) stores the energy.
- Lead-acid batteries are cheaper upfront but heavier, require maintenance, and have a shorter lifespan (2–4 years).
- Lithium (LiFePO4) batteries are more expensive but lighter, maintenance-free, longer-lasting (8–12 years), and can be discharged more deeply.
- A qualified electrician must install the inverter properly and connect it to your DB board safely.
- Size the system based on your load: calculate the watt-hours you need and choose batteries and an inverter that match.
Option 3: Solar PV + Battery + Inverter (Hybrid System)
This is the full solution — solar panels generate electricity during the day, charge the batteries, and power your home directly. Excess energy can feed back to the grid (if approved). Benefits:
- Drastically reduced electricity bills
- Energy independence from Eskom
- Long-term return on investment (typically 4–7 years)
- Increases property value
The cost is higher upfront, but government rebates and finance options are increasingly available. Professional installation by a registered electrician is essential — DIY solar can void warranties and create serious safety hazards.
What Size System Do You Need?
- Basic: lights, TV, phone charging → 1–2 kWh battery, 1–2 kW inverter
- Intermediate: add fridge, small appliances → 5–10 kWh battery, 3–5 kW inverter
- Full home: all appliances including geyser → 10–20 kWh battery, 5–8 kW inverter + solar panels
Always get a load assessment done by a professional before purchasing.
Important Safety Notes
- Never connect a generator or inverter directly to a wall socket ("backfeed") — this is illegal and can kill Eskom workers.
- All battery installations must comply with SANS standards and local regulations.
- Ensure your DB board is properly configured for the backup system.
Key takeaways
- UPS: simple and cheap, limited runtime
- Inverter + battery: great for load shedding, needs professional installation
- Solar hybrid: best long-term solution, higher upfront cost
- Size your system based on your actual load
- Always use a registered electrician for DB board connections
- Never backfeed the grid — it's dangerous and illegal
Need a qualified electrician?
Get trusted help from Wanga Electrical & Projects for inspections, repairs, upgrades, and compliance work.