Akwa Ibom State

Rooftop solar in Nsit Atai, Akwa Ibom: what the roofs are worth

Nsit Atai has 14,832 buildings with a viable rooftop and 385 MWp of roof capacity. 45% run a generator, and together they spend ₦13.4bn a year on energy.

Viable buildings

14,832

Usable roof area

1.71 km²

385 MWp roof capacity

Energy spend

₦13.4bn/yr

12.1 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 23% (cash saved)

The savings bracket for Nsit Atai

Approach B

Cash saved

What these buildings stop paying — merit order, capped at current spend.

Current energy spend₦13.4bn/yr

Year-one cash saved₦13.3bn

Lifetime cash saved₦684bn

NPV₦107bn

Median IRR23%

Median payback4.6 yr

Unlocked energy9.31 GWh/yr

Approach A

Energy value (upper bracket)

What the energy is worth if full latent demand were met. Not cash saved.

Installed capacity52.6 MWp

Capex₦55bn

Year-one energy value₦47.7bn

Lifetime energy value₦2.27tn

NPV₦380bn

Median IRR93%

Median payback1.1 yr

Three ways to size Nsit Atai's rooftops

Solar + battery. The default headline scenario, and the one the SEO fact base quotes. Prices the energy a full solar+storage system would deliver.

Baseline: mixed

Counterfactual: grid when available, generator otherwise, weighted by the NTL-derived grid availability. The realistic case, and what the headline numbers use. Always falls between grid and genset by construction.

Read with care: Sized to LATENT demand — the energy the building would use if it could. Against a cash baseline that only reflects today's spend this looks oversized; that is what sc3 exists to fix.

System size: 52.6 MWp
Capital cost: ₦55bn
Year 1 savings: ₦47.7bn/yr
NPV: ₦380bn
Median IRR: 93%
Median payback: 1.1 yr

The odds a rooftop in Nsit Atai pays back quickly

Of the 14,822 buildings in Nsit Atai with a modelled payback, 75.3% pay back inside five years and 45.3% inside three.

Create a free account

How much of Nsit Atai's demand actually gets met

Buildings in Nsit Atai consume 16.4 GWh/yr but want 25.7 GWh/yr. The 36% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Nsit Atai

Loading band economics…

How many rooftops in Nsit Atai actually pay

Counted building by building on the cash-saved basis (merit-order sized, valued against what the building spends today), not read off an average. Shares are of the 14,822 buildings with a modelled result out of 14,832 in Nsit Atai. 12,576 clear a positive NPV.

Payback

Under 3 years6,714 (45%)

Under 5 years11,163 (75%)

Under 7 years12,565 (85%)

Under 10 years13,185 (89%)

Return (IRR)

Above 10%12,982 (88%)

Above 15%12,576 (85%)

Above 20%11,734 (79%)

Above 25%6,736 (45%)

CO₂ avoided

23.8 kt/yr

Fuel avoided

7.64 million litres/yr

Energy unlocked

9.31 GWh/yr

Demand that is suppressed today

People served

114k

What hardware costs right now

Median advertised rates from our Nigerian market tracker — the same prices used to cost a system in Nsit Atai.

Solar panels

₦250

₦/W

Inverters

₦127,419

₦/kVA

Batteries

₦177,500

₦/kWh

Full price tracker Size a home system Size a business system

Building mix in Nsit Atai

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	12,115	5,455	₦10.8bn	₦10.7bn	23%	4.6 yr
D	2,661	1,251	₦2.52bn	₦2.52bn	23%	4.6 yr
C	56	7	₦53.9m	₦53.9m	23%	4.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	14,448	6,357	₦11.7bn	₦11.7bn	23%	4.6 yr
Worship	214	197	₦350m	₦350m	59%	1.9 yr
Anchor	75	69	₦825m	₦820m	77%	1.4 yr
Commercial General	73	70	₦386m	₦386m	57%	1.9 yr
Industrial	21	19	₦82.2m	₦82.2m	69%	1.6 yr
Hospitality	1	1	₦2.44m	₦2.44m	71%	1.4 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	5,576	2,399	₦4.49bn	₦4.45bn	23%	4.6 yr
50 100m2	3,011	1,259	₦601m	₦601m	23%	4.6 yr
Under 30m2	2,376	1,083	₦125m	₦125m	9%	12.9 yr
250 1000m2	2,116	1,174	₦7.67bn	₦7.66bn	67%	1.6 yr
30 50m2	1,739	791	₦148m	₦148m	19%	5.6 yr
Over 1000m2	14	7	₦341m	₦341m	35%	2.1 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	11,348	5,013	₦10.4bn	₦10.4bn	23%	4.6 yr
Dense Urban	2,066	1,310	₦2.36bn	₦2.36bn	67%	1.6 yr
Unclassified	1,418	390	₦615m	₦615m	23%	4.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	6,348	2,860	₦10.6bn	₦10.6bn	23%	4.6 yr
Residential Small	4,801	2,141	₦981m	₦981m	23%	4.6 yr
Shed	3,299	1,356	₦152m	₦152m	9%	9.6 yr
Institutional	125	117	₦611m	₦611m	57%	1.9 yr
Worship Center	83	77	₦69.9m	₦69.9m	63%	1.6 yr
Place Of Worship	61	56	₦45.2m	₦45.2m	63%	1.6 yr
Educational Facility	29	27	₦215m	₦215m	81%	1.4 yr
School	21	19	₦106m	₦106m	79%	1.4 yr
Industrial Site	20	18	₦72.5m	₦72.5m	69%	1.6 yr
Market	15	15	₦24.9m	₦24.9m	65%	1.6 yr
Healthcare Facility	13	13	₦420m	₦415m	53%	1.9 yr
Clinic	7	7	₦31.9m	₦31.8m	53%	2.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	14,832	6,713	₦13.4bn	₦13.3bn

Not published for this cube: Median IRR, Median payback.

Lead segment

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Standard	14,737	6,626	₦12.5bn	₦12.4bn	23%	4.6 yr
Enterprise	95	87	₦898m	₦892m	73%	1.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	5,701	2,912	₦11.6bn	₦11.6bn
2.0	5,127	2,180	₦1.52bn	₦1.48bn
0.0	3,301	1,356	₦152m	₦152m
1.0	702	264	₦64.9m	₦64.7m
4.0	1	1	₦9.63m	₦9.63m