3kVA vs 5kVA Solar System: Which One Does Your Home Need?

3kVA vs 5kVA solar in Port Harcourt, Warri and Yenagoa: what each can run, AC or no AC, battery size, prices in 2026 and how to choose without wasting money.

By LumaGrid Solar, Port Harcourt·6 min read·
6kVA inverter and 5kWh lithium battery installed in Abraka, Delta State
6kVA inverter and 5kWh lithium battery installed in Abraka, Delta State. Photo: LumaGrid Solar

The two most common home systems in Rivers, Delta and Bayelsa are 3kVA and 5kVA. Which one is right for you? It comes down to one question: do you want to run an AC?

Quick compare

3kVA5kVA
Best for1 to 2 bedrooms2 to 3 bedrooms
Lights, fans, TVYesYes
Fridge / freezerYesYes, bigger ones too
Washing machineCarefulYes
Pressing ironOnly with little else onYes
1.5HP inverter ACNoYes, for a few hours
Usual battery5kWh lithium5kWh lithium
Usual panels4 × 600W5 to 6 × 600W
Price (2026)From about ₦2.8MAbout ₦2.2M to ₦2.8M

Choose 3kVA if…

  • You live in a flat or small bungalow.
  • You want the generator off for lights, fans, TV and fridge.
  • You do not plan to run an AC on solar.
  • Your budget is tight.

A 3kVA with 5kWh lithium runs a 400W evening load for about 11 hours.

Choose 5kVA if…

  • You want to iron, wash clothes or use a microwave without switching things off.
  • You want one AC for a few hours.
  • You run a shop with a freezer.
  • You think you will grow your load.

The AC rule

A 1.5HP AC needs a big burst of power to start. A 3kVA inverter often trips. So if you want AC, go 5kVA or more. If you want AC all night, look at 6kVA with 16kWh. Read can solar power an AC.

Do not forget the battery

The inverter decides what you can run. The battery decides how long. A 5kVA inverter with a tiny battery will still go off early at night. See how long a solar battery lasts at night.

Local tip

Many families in Obio-Akpor and Effurun start with 3kVA, then add an AC a year later and need a new inverter. If an AC is in your plans, start at 5kVA.

See full prices on the pricing page.

Frequently asked questions

Can 3kVA solar carry a fridge and TV?

Yes. A fridge, TV, decoder, fans and lights together use well under 1kW, which a 3kVA inverter handles easily.

Can 5kVA carry an AC?

Yes, one 1HP or 1.5HP inverter AC with your normal home loads. For the AC to run most of the night you need 8kWh or more of battery.

What is the price difference between 3kVA and 5kVA?

Roughly ₦500,000 to ₦1M more for 5kVA, mostly because of the bigger battery and extra panels.

Can I start with 3kVA and upgrade later?

You can add batteries and panels later, but the inverter size usually stays. If an AC is likely soon, buying 5kVA first avoids replacing the inverter.

Want a system sized for your home?

Tell us your state, area, building type and what you want to power. We reply on WhatsApp with a recommendation and book a free site assessment anywhere in Rivers, Delta or Bayelsa.

Tell us your area, building type and what you want to power. We reply on WhatsApp with a recommendation and book a free site assessment.

Call +234 705 949 7792