Introduction

One of the biggest mistakes many Nigerians make when going solar or installing an inverter system is choosing the wrong inverter size.
An inverter that is too small will overload and fail early.
An inverter that is too large wastes energy and money.

To help you avoid these costly mistakes, Solarzone Nigeria explains how to calculate the right inverter capacity for your appliances, home, or business — plus recommendations for the best inverter sizes based on real Nigerian usage.

⭐ 1️⃣ What Is Inverter Capacity?

Inverter capacity is measured in VA (Volt-Ampere) or kVA (kilo-Volt-Ampere) and determines how much load (appliances) the inverter can power at once.

✔ Higher kVA = More appliances supported
✔ Too small = Overload + inverter damage
✔ Too large = Wasted money

Your inverter capacity must match your power consumption.

⭐ 2️⃣ Calculate Your Total Power Load

You must calculate the total wattage of all appliances you want to power.

👉 Step 1: List Your Appliances

Example:

• 4 Fans – 75W each

• 6 LED bulbs – 10W each

• 1 TV – 80W

• 1 Decoder – 20W

• 1 Laptop – 60W

• 1 Fridge – 150W

• 1 Router – 10W

👉 Step 2: Multiply Quantity × Wattage

Total Load = 680W

⭐ 3️⃣ Convert Your Total Load to kVA

Inverter capacity is measured in kVA, not watts.
To convert:

(Nigerian homes typically run at 80% power factor.)

Example:

So, you need at least 1kVA, but it's safer to step up to 1.5kVA.

⭐ 4️⃣ Recommended Inverter Sizes for Nigerian Homes

We’ve simplified it for you!
Here are the MOST COMMON and IDEAL inverter sizes for real Nigerian loads:

🟦 1kVA – 1.5kVA Inverter

Supports:

• Lights

• Fans

• Laptop

• TV

• Decoder

Best For:
✔ Single room
✔ Shop
✔ Small apartment

🟩 2.5kVA – 3kVA Inverter

Supports:

• Lights/fans

• TV

• Fridge

• Charging devices

Best For:
✔ Mini flats
✔ 1–2 bedroom apartments

💼 Solarzone recommends this size for medium homes wanting basic comfort.

🟧 3.5kVA – 5kVA Inverter

Supports:

• Multiple fans

• TVs

• Freezers

• Pumps

• Routers

• Laptops

Best For:
✔ 2–4 bedroom homes
✔ Shops
✔ Small offices

⭐ This is the MOST POPULAR inverter size in Nigeria.

🟥 7.5kVA – 10kVA Inverter

Supports:

• Freezers

• Water pumps

• Air conditioners

• Multiple rooms

• Office equipment

Best For:
✔ Large homes
✔ Corporate offices
✔ Businesses

💡 Solarzone installs hybrid systems that deliver 24/7 power at this capacity.

🟨 15kVA+ Inverters

Supports:

• Industrial machines

• Large AC systems

• Hotels

• Hospitals

• Manufacturing

Best For:
✔ Large commercial operations
✔ Estates

⭐ 5️⃣ Factors That Affect Inverter Sizing

✔ Battery capacity

The inverter must match your battery bank voltage (12V, 24V, or 48V).

✔ Solar panel array

Larger inverters support higher solar input.

✔ Surge loads

Appliances like fridges and pumps require double their running wattage at startup.

✔ Future expansion

Always choose a slightly higher inverter size to allow upgrades.

🔧 Solarzone calculates all these factors during your free energy audit.

⭐ 6️⃣ Common Mistakes Nigerians Make

❌ Buying inverter first before calculating load
❌ Using cheap modified sine wave inverters
❌ Pairing wrong battery size
❌ Under-sizing solar panels
❌ Buying from markets without warranty

💼 Solarzone helps you avoid ALL these mistakes by providing accurate sizing and professional installation.

⭐ 7️⃣ Example Inverter Sizing for Real Homes

🏠 2 Bedroom Flat (Typical Load)

• 3 fans

• 6 bulbs

• TV + decoder

• Fridge

• Water dispenser

• Laptop
  ➡ Recommended: 3.5–5kVA inverter

🏘️ 4 Bedroom Duplex

• Fans

• TVs

• Freezer + fridge

• Pump

• AC (1 unit)
  ➡ Recommended: 5–7.5kVA inverter

🏢 Small Office

• Computers

• Printer

• Router
  ➡ Recommended: 3.5kVA inverter

⭐ 8️⃣ Solarzone Recommended Brands

Solarzone supplies only high-quality pure sine wave inverters:

⭐ Felicity

⭐ Luminous

⭐ Prag

⭐ Mercury

⭐ Su-Kam

⭐ Bluegate

⭐ Victron (premium)

✔ Original
✔ Warranty-backed
✔ Installed by certified technicians

🛠️ Why Choose Solarzone for Your Inverter Installation?

Solarzone delivers:

✨ Free load calculation
✨ Expert system design
✨ Affordable inverter packages
✨ 100% original products
✨ Professional wiring & installation
✨ Battery + solar matching
✨ After-sales support
✨ Nationwide service

Your inverter is the heart of your power system — let experts size and install it properly.

🏁 Final Thoughts

Choosing the right inverter capacity is essential for reliable power.
Whether you need backup power or a full solar system, accurate sizing ensures:

✔ Better performance
✔ Longer battery life
✔ Lower costs
✔ 24/7 uninterrupted power

With Solarzone Nigeria, you get expert sizing, professional installation, and 100% original equipment — guaranteed.

💥 Call to Action

⚡ Need help choosing the right inverter size for your home or office?
Get a FREE load assessment today from Solarzone Nigeria.

📞 Call/WhatsApp: +234 [09091394722]