Nigeria
Solar in Rivers State: sunlight, tariffs and what a system costs
A rooftop in Rivers State gets about 4.6 peak sun hours a day, so every kilowatt of panels makes roughly 1,386 kWh a year. A 5 kW home system produces about 19 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
4.6 h/day
Daily average across the year
Yield per kW
1,386 kWh/yr
Delivered output, after 17% system losses
5 kW system output
19 kWh/day
6,932 kWh a year
Grid tariff (modelled)
₦209.50/kWh
PEDC Band A, cost-reflective
What a system costs in Rivers State
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
- 347 kWh/month
- Avoided spend
- ₦80,597/month
- Pays back in
- 3.0 years
- Fuel avoided
- 194 L/yr
Family home
Full home minus air conditioning, with overnight backup
₦5.1m
5 kW solar · 10 kWh battery · 5 kVA inverter
- Generates
- 578 kWh/month
- Avoided spend
- ₦142,231/month
- Pays back in
- 3.0 years
- Fuel avoided
- 343 L/yr
Whole home
Air conditioning, boreholes and a home office
₦10.2m
10 kW solar · 20 kWh battery · 10 kVA inverter
- Generates
- 1,155 kWh/month
- Avoided spend
- ₦290,783/month
- Pays back in
- 2.9 years
- Fuel avoided
- 701 L/yr
What this system returns in Rivers State
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
₦93,389 a month off the bill
Payback
4.0 yrs
Simple payback on installed cost
Return (IRR)
22%
Over a 20-year life
20-year savings
₦16.5m
Net present value ₦2.4m
Environmental benefit in Rivers State
Diesel avoided
343 L/yr
About ₦617,618 of fuel
CO₂ avoided
3,519 kg/yr
Grid factor 0.5 kg per kWh
Generator hours cut
137 hrs/yr
At a typical 2.5 L an hour
Clean energy
6,239 kWh/yr
Used on site, not exported
Local government areas in Rivers
Sizing the market rather than a single site? See the rooftop market data for Rivers State.