Akwa Ibom State

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

Nsit Ibom has 29,111 buildings with a viable rooftop and 765 MWp of roof capacity. 31% run a generator, and together they spend ₦18.6bn a year on energy.

Viable buildings

29,111

Usable roof area

3.4 km²

765 MWp roof capacity

Energy spend

₦18.6bn/yr

17.8 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 23% (cash saved)

The savings bracket for Nsit Ibom

Approach B

Cash saved

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

Current energy spend₦18.6bn/yr

Year-one cash saved₦18.2bn

Lifetime cash saved₦949bn

NPV₦146bn

Median IRR23%

Median payback4.6 yr

Unlocked energy16.6 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity93.5 MWp

Capex₦94.5bn

Year-one energy value₦79.8bn

Lifetime energy value₦3.79tn

NPV₦633bn

Median IRR93%

Median payback1.1 yr

Three ways to size Nsit Ibom'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: 93.5 MWp
Capital cost: ₦94.5bn
Year 1 savings: ₦79.8bn/yr
NPV: ₦633bn
Median IRR: 93%
Median payback: 1.1 yr

The odds a rooftop in Nsit Ibom pays back quickly

Of the 28,923 buildings in Nsit Ibom with a modelled payback, 68.2% pay back inside five years and 30.9% inside three.

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How much of Nsit Ibom's demand actually gets met

Buildings in Nsit Ibom consume 26.9 GWh/yr but want 43.5 GWh/yr. The 38% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Nsit Ibom

Loading band economics…

How many rooftops in Nsit Ibom 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 28,923 buildings with a modelled result out of 29,111 in Nsit Ibom. 24,249 clear a positive NPV.

Payback

Under 3 years8,929 (31%)

Under 5 years19,726 (68%)

Under 7 years24,192 (84%)

Under 10 years25,877 (89%)

Return (IRR)

Above 10%25,464 (87%)

Above 15%24,249 (83%)

Above 20%21,178 (73%)

Above 25%9,108 (31%)

CO₂ avoided

33.5 kt/yr

Fuel avoided

9.43 million litres/yr

Energy unlocked

16.6 GWh/yr

Demand that is suppressed today

People served

192k

What hardware costs right now

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

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 Ibom

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	15,350	5,044	₦10.8bn	₦10.7bn	23%	4.6 yr
D	7,815	2,760	₦6.81bn	₦6.48bn	23%	4.6 yr
C	5,906	1,098	₦979m	₦979m	23%	4.6 yr
B	40	40	₦33.4m	₦33.4m	57%	1.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	27,895	7,903	₦13.3bn	₦12.9bn	23%	4.6 yr
Commercial General	649	541	₦3.16bn	₦3.16bn	61%	1.6 yr
Commercial Retail	194	177	₦55m	₦55m	61%	1.6 yr
Worship	170	142	₦303m	₦303m	59%	1.9 yr
Anchor	167	148	₦1.62bn	₦1.59bn	77%	1.4 yr
Industrial	32	27	₦83.4m	₦83.4m	65%	1.6 yr
Hospitality	4	4	₦20.2m	₦20.2m	55%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	12,159	3,482	₦6.9bn	₦6.63bn	23%	4.6 yr
50 100m2	5,582	1,601	₦862m	₦813m	23%	4.9 yr
Under 30m2	4,499	1,365	₦149m	₦149m	9%	13.1 yr
250 1000m2	3,849	1,550	₦9.63bn	₦9.53bn	25%	4.6 yr
30 50m2	2,977	917	₦178m	₦178m	15%	6.9 yr
Over 1000m2	45	27	₦860m	₦860m	59%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	13,504	4,200	₦6.93bn	₦6.71bn	23%	4.6 yr
Urban	7,966	2,121	₦5.85bn	₦5.71bn	23%	4.6 yr
Dense Urban	4,221	2,081	₦4.22bn	₦4.21bn	25%	4.6 yr
Unclassified	3,420	540	₦1.59bn	₦1.53bn	23%	4.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	11,869	3,753	₦12bn	₦11.6bn	23%	4.6 yr
Residential Small	9,057	2,698	₦1.2bn	₦1.15bn	23%	4.9 yr
Shed	5,401	1,452	₦144m	₦144m	9%	9.9 yr
Residential Formal	1,568	0	₦28.7m	₦28.7m	19%	5.6 yr
Commercial Corridor	422	393	₦2.17bn	₦2.17bn	65%	1.6 yr
Kiosk Shop	194	177	₦55m	₦55m	61%	1.6 yr
Institutional	164	146	₦1.18bn	₦1.18bn	57%	1.9 yr
Educational Facility	79	72	₦368m	₦368m	79%	1.4 yr
Worship Center	69	58	₦68.6m	₦68.6m	61%	1.6 yr
Commercial	59	10	₦178m	₦178m	33%	3.4 yr
School	45	39	₦196m	₦196m	77%	1.4 yr
Unknown	45	32	₦108m	₦108m	55%	1.9 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	29,111	8,942	₦18.6bn	₦18.2bn

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	28,442	8,371	₦14.6bn	₦14.2bn	23%	4.6 yr
SME High	484	405	₦2.35bn	₦2.35bn	63%	1.6 yr
Enterprise	185	166	₦1.68bn	₦1.64bn	75%	1.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	12,146	4,123	₦14.6bn	₦14.2bn
2.0	9,096	2,637	₦1.59bn	₦1.54bn
0.0	5,401	1,452	₦144m	₦144m
4.0	1,515	230	₦1.8bn	₦1.8bn
1.0	932	485	₦106m	₦106m
5.0	18	13	₦330m	₦330m
6.0	3	2	₦21.4m	₦21.4m