3kW Solar Inverters for Essentials

Last updated: January 28, 2026

Perfect for essential backup loads like lights, WiFi, TV, and fridge during load shedding.

Quick answer: 3kW is enough for lights, WiFi, TV, and a fridge, but not heavy appliances. 3kW inverters are a common starting point for essential backup power. They are suitable for small homes, apartments, and budget-focused systems.

What Can 3kW Power?

Typical loads for a 3kW inverter:

LED lights and plugs
WiFi router and modem
TV and decoder
Fridge (one at a time with other loads)
Laptop and phone charging

Who Should Choose 3kW

Best suited for:

Small homes and apartments
Budget-conscious buyers
Users who want basic backup only
Starter systems that can be expanded later

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Price Disclaimer: Prices shown were verified on 29 January 2026. Prices may change without notice. We earn affiliate commissions on qualifying purchases.

All prices are in South African Rand (ZAR) unless otherwise stated. Shipping costs may apply depending on your location.

Inverter Prices 5kW Inverters Hybrid Inverters

3kW Solar Inverters FAQs

It is enough for essential loads like lights, WiFi, TV, and a fridge. It is not enough for high-draw appliances like geysers, stoves, or multiple heavy loads at once.

Add up the wattage of appliances you want to run simultaneously. For essentials (lights, TV, WiFi, fridge): 3kW. For essentials plus some appliances: 5kW. For whole house: 8-10kW. Most South African homes do well with 5kW hybrid inverters.

Hybrid inverters connect to both solar panels and the grid, automatically switching between power sources. Off-grid inverters work independently without grid connection. For load shedding backup with grid access, hybrid is the better choice.

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