How to Size Backup Power for a Nigerian Home

Grid supply in many Nigerian cities can be unpredictable, and choosing backup power by guesswork often leads to a system that is either too small to be useful or larger than you need. Sizing well starts with your own appliances.

1. List what must stay on

Separate essentials (lighting, phone charging, router, fans) from comfort loads (TV, laptop, small fridge). Heavy heating loads such as irons, kettles and electric cookers are generally poorly suited to portable power stations.

2. Find each appliance's wattage

Check the rating label or manual. Where a range is given, use the higher figure. Multiply watts by the hours you expect to use it each day to get watt-hours (Wh).

3. Add a realistic margin

Not all stored energy reaches your appliances. Conversion losses and battery protection mean usable energy is lower than the nominal figure, so plan with an efficiency factor rather than the headline capacity.

4. Check simultaneous load

Your total running watts at any moment must stay within the inverter's continuous rating, and motor-driven appliances can draw a surge when starting. Confirm these ratings against official specifications before buying.

Our Solar Calculator walks through every one of these steps and gives you an indicative result you can bring to a quotation conversation.