Can Solar Run an Air Conditioner in Nigeria? Sizing 1HP and 1.5HP ACs

Yes, solar can run an air conditioner in Nigeria, but it is the single biggest load most homes ask for. One 1.5 HP AC running for 8 hours can use more energy than the rest of the house combined. Here is what it takes, with real numbers for a home in Uyo, Akwa Ibom.

How much power does an AC use?

These are typical values. Check the nameplate or datasheet of the actual unit.

Worked example: adding a 1.5 HP AC to a home

Take a three-bedroom home in Uyo that already uses 6,488 Wh a day for lights, fans, TV, fridge, laptops and Wi-Fi. That base load needs four 550 W panels and about 11 kWh of lithium storage on its own. See the panel and battery sizing guide for how we got there.

Now add one 1.5 HP AC running 8 hours a night. These figures use 4.2 peak sun hours, 90% efficiency for the charge controller, battery and inverter, a 48 V lithium bank at 80% depth of discharge, and one day of storage.

One AC more than doubles the system. The non-inverter AC also nearly doubles the starting surge, so it needs a bigger inverter even though its running power is only slightly higher.

How to make AC on solar affordable

• Choose an inverter AC. It starts gently and uses less energy once the room is cool. On solar, it often pays for itself in a smaller inverter and battery bank.
• Run it in the daytime when you can. Daytime cooling comes straight from the panels, not the batteries, and batteries are the expensive part.
• Cut the night hours. Cool the bedroom before sleeping, then use a timer or sleep mode. Going from 8 to 4 night hours almost halves the AC’s battery storage.
• Set it to 24 to 25 °C. Each degree lower makes the compressor work harder.
• Keep the room sealed and shaded. Close windows and doors, and block direct sun on west-facing windows.
• Be honest with the client. Show them the difference in panels, batteries and price with and without the AC, so the decision is theirs.

Compare options in minutes

Soliqo lets you add or remove the AC from a load list and see the panels, batteries and inverter change instantly. You can then quote both options in naira, so your client can choose. Start a free trial or read how to size a solar inverter.