NEPA vs Solar: The True Cost Comparison for Nigerian Homes in 2025
Most Nigerians are already paying for a solar system — they just don't know it. Here's a side-by-side breakdown of what you're actually spending on grid power and generators versus what solar would cost.
The Hidden Cost Nobody Talks About
When Nigerians compare solar to grid electricity, they often make one critical mistake: they only count the NEPA bill. They forget the generator.
In 2025, the average Nigerian home or small business is running three power sources simultaneously — grid, generator, and inverter/battery. Each has a cost. Together, they often exceed what a solar system would cost to finance.
Breaking Down What You're Already Paying
Grid Electricity (NEPA/DISCO)
Following the 2024–2025 NERC tariff reforms, rates by band are:
| Band | Supply Hours | Rate (₦/kWh) |
|---|---|---|
| A | 20+ hrs/day | ₦295 |
| B | 16–20 hrs/day | ₦245 |
| C | 12–16 hrs/day | ₦209 |
| D | 8–12 hrs/day | ₦157 |
The painful reality: most Nigerians are paying Band A/B prices while receiving Band C/D service. Billing disputes are common, and estimated billing often inflates actual usage.
Generator Fuel
This is where the real money goes. A typical 3.5KVA petrol generator running 8 hours/day consumes roughly 3–4 litres of fuel at ₦1,100/litre = ₦3,300–₦4,400 daily.
Monthly: ₦99,000–₦132,000 — just in fuel.
Generator Maintenance & Depreciation
- •Oil change every 250 hours: ~₦8,000
- •Spark plugs, air filter annually: ~₦15,000
- •Repairs (average): ~₦40,000/year
- •Generator replacement every 5–7 years: ₦350,000–₦600,000
Annualised maintenance and depreciation: ₦100,000–₦160,000/year
The Total "Status Quo" Cost
For a medium household in Lagos (15 kWh/day):
| Cost Item | Monthly | Annual |
|---|---|---|
| Electricity bill | ₦44,250 | ₦531,000 |
| Generator fuel | ₦115,500 | ₦1,386,000 |
| Gen maintenance | ₦10,000 | ₦120,000 |
| **Total** | **₦169,750** | **₦2,037,000** |
Over 5 years: ₦10,185,000 — and that's before factoring in tariff increases, fuel price hikes, or generator replacement.
What Solar Actually Costs
A 5KVA lithium solar system from Kasot Power: ₦5,850,000
Monthly cost over 5 years (amortised): ₦97,500
Plus maintenance: ₦9,750/month
Total monthly: ₦107,250
That's ₦62,500 less per month than the status quo — from day one.
Over 5 years, solar costs ₦6,435,000 (including maintenance).
Status quo costs ₦10,185,000.
Solar saves you ₦3,750,000 over 5 years. After year 5, the savings accelerate because the system is paid off.
"But Solar Has a Big Upfront Cost"
This is the most common objection — and it's valid. ₦5.85 million is real money.
Options:
1. Pay upfront and start saving immediately
2. Phased installation — start with a smaller system and expand
3. Professional power audit first (from ₦50,000) to right-size your system before spending
Many of our clients find that what they'd spend on generator fuel over 12 months alone covers a significant portion of the system cost.
The Bottom Line
You are already paying for solar. You're just paying for it in fuel, bills, and generator repairs — with nothing to show for it at the end.
Solar converts that ongoing expense into a one-time investment that appreciates over time. In Nigeria's current energy environment, it's one of the highest-ROI decisions a homeowner or business can make.
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