Delta State
Solar in Isoko North: sunlight, tariffs and what a system costs
A rooftop in Isoko North gets about 4.4 peak sun hours a day, so every kilowatt of panels makes roughly 1,348 kWh a year. A 5 kW home system produces about 18 kWh on an average day, against roughly 18 kWh of daily demand.
Every figure below is recalculated for the audience you pick.
Peak sun hours
4.4 h/day
Daily average across the year
Yield per kW
1,348 kWh/yr
Delivered output, after 17% system losses
5 kW system output
18 kWh/day
6,743 kWh a year
Grid tariff (modelled)
₦209.50/kWh
BEDC Band A, cost-reflective
What it costs and how you pay
A five-year facility on this system costs about ₦122,535 a month, against ₦92,968 a month of savings — a gap of ₦29,567 a month to top up until the fuel bill falls away.
Pay outright
₦4.2m
Lowest lifetime cost, fastest return
5-year facility
₦122,535/mo
Indicative at 25% a year
Monthly saving
₦92,968
Year one, fuel and tariff combined
Monthly top-up
₦29,567/mo
What you add until the fuel bill falls away
Spent on power today
₦119,915/mo
Typical building in this area
What this area buys
Full home system
Affordability index 2.56 against the national average
Lease and pay-as-you-go structures exist for businesses with a steady load — those are priced per site, not per package.
What a system costs in Isoko North
Installed price estimates using today's median Nigerian hardware rates plus installation, and savings valued at your local tariff and what a generator costs to run. Estimates, not quotes.
Essentials
Lights, fans, TV, phones and a small fridge
₦2.9m
3 kW solar · 5 kWh battery · 3.5 kVA inverter
- Generates
- 337 kWh/month
- Avoided spend
- ₦115,110/month
- Pays back in
- 2.1 years
- Fuel avoided
- 567 L/yr
Family home
Full home minus air conditioning, with overnight backup
₦5.1m
5 kW solar · 10 kWh battery · 5 kVA inverter
- Generates
- 562 kWh/month
- Avoided spend
- ₦203,135/month
- Pays back in
- 2.1 years
- Fuel avoided
- 1,001 L/yr
Whole home
Air conditioning, boreholes and a home office
₦10.2m
10 kW solar · 20 kWh battery · 10 kVA inverter
- Generates
- 1,124 kWh/month
- Avoided spend
- ₦415,298/month
- Pays back in
- 2.0 years
- Fuel avoided
- 2,047 L/yr
What this system returns in Isoko North
A four-bedroom home running fans, fridge, TV, pumps and light air conditioning. 5 kW solar, 10 kWh battery, 4.8 kW inverter — installed at about ₦4.2m. Solar costs ₦175 a unit over its life, and 81% of demand is met without the grid.
Year-one savings
₦1.1m
₦92,968 a month off the bill
Payback
5.0 yrs
Simple payback on installed cost
Return (IRR)
22%
Over a 20-year life
20-year savings
₦16.3m
Net present value ₦2.3m
What it returns here
No two buildings in Isoko North save the same amount. Across every viable roof modelled here, the middle half lands between 1.9 and 4.4 years to pay back, with returns of 25%–59% a year. If you already run a generator, solar starts by replacing the most expensive units you buy, so it pays back fastest; a grid-only building displaces cheaper units and takes longer.
Payback
1.9–4.4 yrs
Median 2.4 years
Return a year
25%–59%
Median 43% IRR
With a generator today
2.4 yrs
Fuel displaced first, then grid units
Grid-only building
2.4 yrs
Nothing to displace but tariff units
This page's system
5.0 yrs
From the simulated run above
Year-one saving
₦668,318–₦1.6m
Implied by the payback spread on a typical system
Pay back inside 5 years
83%
56% inside three years
Energy independence
85%
Share of the year covered by solar and storage
Demand unlocked
1.3 kWh/day
474 kWh a year, per building
What that runs
29 fan-hours
Or a fridge running unbroken, plus lights all evening
Modelled solar unit
₦173/kWh
Across every viable roof here
- Beyond the money, the change people notice is that the things they switch off stay on — about 1.3 kWh a day of currently suppressed demand comes back.
Modelled at today's fuel and tariff, against what each building spends on power now. Both have moved upward, which shortens payback.
Environmental benefit in Isoko North
Diesel avoided
1,001 L/yr
About ₦1.8m of fuel
CO₂ avoided
4,200 kg/yr
Grid factor 0.5 kg per kWh
Generator hours cut
400 hrs/yr
At a typical 2.5 L an hour
Clean energy
6,068 kWh/yr
Used on site, not exported
Nearby areas in Delta
Sizing the market rather than a single site? See the rooftop market data for Delta State.