5kVA vs 10kVA Solar System: When Do You Need to Go Big?

5kVA vs 10kVA solar for duplexes, offices and businesses in Port Harcourt, Asaba and Yenagoa. What each runs, battery and panel sizes, and 2026 prices.

By LumaGrid Solar, Port Harcourt·6 min read·
Lithium batteries ready for a LumaGrid solar installation
Lithium batteries ready for a LumaGrid solar installation. Photo: LumaGrid Solar

Once you add more than one AC, a pump or a business load, a 5kVA system starts to struggle. That is when people look at 10kVA.

Quick compare

5kVA10kVA
Best for2–3 bedroom homeDuplex, office, guest house
ACsOne small inverter ACTwo 1.5HP inverter ACs
Water pumpSmall pump, daytime1HP pump
BatteryAbout 5kWhAbout 15kWh or more
Panels5 to 6 × 600W10 to 14 × 600W
Price (2026)About ₦2.2M–₦2.8MAbout ₦5.1M–₦6.5M

Signs you need 10kVA

  • You have two or more ACs you want on solar.
  • You have a borehole pump and a freezer.
  • You run an office with computers, printers and ACs.
  • You run a guest house or small hotel.

Signs 5kVA is enough

  • One AC, used for a few hours.
  • Normal family loads.
  • You want to save money now.

Battery is the real cost

A 10kVA inverter does not cost twice a 5kVA. The big jump is the battery. Running two ACs at night needs a lot of stored power. That is why 10kVA systems need 15kWh or more. Read 5kWh vs 10kWh battery.

Local examples

Full price details are on our pricing page.

Frequently asked questions

What can a 10kVA solar system run?

A whole duplex in most cases: two 1.5HP inverter ACs, a 1HP water pump, fridges and freezers, lights, fans, TVs and office equipment, as long as the battery is big enough.

Is 10kVA too big for a 3-bedroom flat?

Usually yes. Unless you run two or more ACs, a 5kVA or 6kVA system is enough for a 3-bedroom flat.

How many panels does a 10kVA system need?

Usually 10 to 14 panels of 600W (about 6kW to 8.4kW), depending on your daily use.

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