Inverter Installation Cost in Nigeria (2026): Prices by Size, Batteries, and How to Size a System

What an inverter system costs in Nigeria in 2026 — 1.5 kVA to 10 kVA inverters, lithium vs tubular batteries, installation labour — plus how to size one for…

Published September 2026 · Skills · by Skillnaija Team

An inverter and battery system is now the first thing many Nigerian households and shops buy after a generator became too expensive to run. Prices have shifted a lot since 2023 — lithium batteries fell, the naira moved, and the market filled with both good and terrible equipment. This guide gives realistic 2026 costs, explains how to size a system so it actually works, and shows what a fair installation quote looks like.

What an inverter system costs in Nigeria in 2026

Typical all-in prices (inverter, batteries, cabling, installation) for common setups:

• 1.5 kVA with one 220 Ah tubular battery (lights, fans, TV, phone charging for a small flat): ₦450,000 to ₦750,000.
• 2.5 kVA with two tubular batteries (a two-bedroom flat without heavy appliances): ₦800,000 to ₦1.3 million.
• 3.5 kVA with a 5 kWh lithium battery (a family home with a fridge, TVs, fans, lights, laptops): ₦1.4 million to ₦2.4 million.
• 5 kVA with 10 kWh lithium (a large home or small office, a freezer and a small AC for some hours): ₦2.5 million to ₦4.5 million.
• 10 kVA with 20 kWh lithium (offices, shops with several ACs, clinics): ₦5 million to ₦9 million.

Adding solar panels to charge the batteries is covered in our solar installation cost guide; a hybrid inverter designed for solar costs 20% to 50% more than a plain backup inverter but saves buying a second unit later.

Component prices in 2026

• Inverters: 1.5 kVA ₦120,000 to ₦250,000; 2.5 to 3.5 kVA ₦250,000 to ₦600,000; 5 kVA hybrid ₦500,000 to ₦1.2 million; 10 kVA hybrid ₦1.2 million to ₦2.5 million. Brands with local service (Luminous, Felicity, Deye, Growatt, Victron at the top end) cost more and last longer.
• Tubular lead-acid batteries (200–220 Ah, 12 V): ₦180,000 to ₦320,000 each; three to five years of life with care.
• Lithium (LiFePO4) batteries: a 5 kWh unit ₦800,000 to ₦1.5 million; 10 kWh ₦1.5 million to ₦2.8 million; eight to fifteen years of life and far more usable capacity. Lithium is now cheaper per usable kWh over its life than tubular.
• Cabling, breakers, changeover, battery rack, earthing: ₦40,000 to ₦200,000 depending on size.

Installation labour

₦25,000 to ₦60,000 for a small 1.5 to 2.5 kVA system; ₦60,000 to ₦150,000 for 3.5 to 5 kVA; ₦150,000 to ₦400,000 for 10 kVA and above or where rewiring to separate essential circuits is needed. Good installers separate the loads the inverter should carry from those it should not (no electric kettles, irons or water heaters on a small inverter), install a proper changeover or automatic transfer, and earth the system.

How to size an inverter system

1. List the loads you want on the inverter with their watts: LED bulbs 10 W each, ceiling fan 70 W, TV 60 to 150 W, laptop 60 W, fridge 150 W running (600 W starting), freezer 200 W, 1 HP AC 900 to 1,100 W.
2. Add the loads that run at the same time to get peak watts; multiply by 1.3 for starting surges and choose an inverter with at least that rating. A home with lights, three fans, a TV and a fridge peaks around 900 W — a 2.5 kVA inverter.
3. Estimate daily energy: watts × hours for each load. The same home might use 4 to 6 kWh in a night; a 5 kWh lithium battery covers it, while two 220 Ah tubular batteries give about 2.5 kWh usable and will not.
4. Match the battery to the recharge source: grid power a few hours a day, a generator, or solar panels. Batteries that never get fully charged die early.

The commonest mistake is buying a large inverter with a small battery: the inverter can carry the AC, but the battery is flat in an hour. The second is running a fridge, iron and pump on a 1.5 kVA system and blaming the installer.

Reading an installation quote

A fair quote lists the inverter and battery models with capacities, the cable sizes, the breakers and changeover, labour, and a warranty for the equipment and for the installation. Ask which loads the installer has designed for and how many hours the battery will run them. Very cheap quotes usually mean undersized cables, no earthing, or batteries that are not what the label says.

For technicians: a growing trade

Inverter installation and maintenance is among the fastest-growing technical services in Nigeria, and it pairs naturally with electrical, generator and solar work. The free Inverter & Battery Maintenance course covers sizing, installation, battery care and fault-finding; Solar Panel Installation adds the panels; and Inverter Sales covers selling systems on commission without buying stock.

Frequently asked questions

How much does an inverter system cost in Nigeria in 2026?

About ₦450,000 to ₦750,000 for a 1.5 kVA system with one tubular battery, ₦1.4 million to ₦2.4 million for a 3.5 kVA system with a 5 kWh lithium battery, and ₦2.5 million to ₦4.5 million for a 5 kVA system with 10 kWh of lithium, installed.

What size inverter do I need for a 2-bedroom flat?

For lights, fans, a TV, laptops and a fridge, a 2.5 to 3.5 kVA inverter with a 5 kWh lithium battery covers a typical night. Add capacity for a freezer or a small AC. Kettles, irons and water heaters should stay off the inverter.

Lithium or tubular battery — which is better in Nigeria?

Lithium (LiFePO4) costs more upfront but lasts eight to fifteen years with far more usable capacity, making it cheaper per usable kWh over its life. Tubular batteries are cheaper to buy but last three to five years and give about half their rated capacity usably.

How much do installers charge to install an inverter?

₦25,000 to ₦60,000 for small systems, ₦60,000 to ₦150,000 for 3.5 to 5 kVA, and ₦150,000 to ₦400,000 for 10 kVA and above or where circuits must be separated.

Why does my inverter battery drain so fast?

Usually an undersized battery for the loads, heavy appliances (fridge, pump, iron) on the inverter, a battery that never gets fully charged, or an ageing tubular battery. Proper sizing and load separation fix most cases.