What a Solar and Inverter System Really Costs in Lagos

Step one: measure the load, not the house

Bedroom count tells us very little. Two identical duplexes can differ by a factor of three once you add air conditioning, a borehole pump and a chest freezer.

We list every appliance you want backed up, its running power and how many hours a day it runs. That produces a daily energy figure in kilowatt hours, which is what actually sizes the system.

Step two: batteries drive the budget

Storage is usually the largest single line on a hybrid quote. Lithium costs more upfront than tubular batteries but typically delivers far more usable cycles, which is why we specify it for most homes that run daily.

• Inverter rating covers peak load, not total energy
• Battery capacity covers how long you run without sun or grid
• Panel array covers how quickly you refill the batteries

Step three: decide how independent you want to be

Full independence from the generator is achievable, but it costs more than a system designed to carry essentials through the evening and overnight. Many clients start with essentials, then expand the array and storage in a second phase.

We design phase one so phase two does not mean replacing equipment.

What quietly inflates a quote

Roof type and access, changeover and protection gear, cable runs from roof to inverter room, and remedial electrical work on an older distribution board all affect labour and materials. A quote without a site visit hides those costs until installation day.