Akwa Ibom State

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

Ibiono Ibom has 38,434 buildings with a viable rooftop and 904 MWp of roof capacity. 43% run a generator, and together they spend ₦41.4bn a year on energy.

Viable buildings

38,434

Usable roof area

4.02 km²

904 MWp roof capacity

Energy spend

₦41.4bn/yr

38.5 GWh/yr burned on generators

Median payback

4.4 yr

Median IRR 25% (cash saved)

The savings bracket for Ibiono Ibom

Approach B

Cash saved

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

Current energy spend₦41.4bn/yr

Year-one cash saved₦40.5bn

Lifetime cash saved₦2.08tn

NPV₦325bn

Median IRR25%

Median payback4.4 yr

Unlocked energy29.9 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity154 MWp

Capex₦158bn

Year-one energy value₦137bn

Lifetime energy value₦6.49tn

NPV₦1.09tn

Median IRR95%

Median payback1.1 yr

Three ways to size Ibiono 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: 154 MWp
Capital cost: ₦158bn
Year 1 savings: ₦137bn/yr
NPV: ₦1.09tn
Median IRR: 95%
Median payback: 1.1 yr

The odds a rooftop in Ibiono Ibom pays back quickly

Of the 38,334 buildings in Ibiono Ibom with a modelled payback, 77.2% pay back inside five years and 43.0% inside three.

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How much of Ibiono Ibom's demand actually gets met

Buildings in Ibiono Ibom consume 55.6 GWh/yr but want 85.6 GWh/yr. The 35% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Ibiono Ibom

Loading band economics…

How many rooftops in Ibiono 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 38,334 buildings with a modelled result out of 38,434 in Ibiono Ibom. 33,143 clear a positive NPV.

Payback

Under 3 years16,471 (43%)

Under 5 years29,584 (77%)

Under 7 years33,111 (86%)

Under 10 years34,602 (90%)

Return (IRR)

Above 10%34,189 (89%)

Above 15%33,143 (86%)

Above 20%30,744 (80%)

Above 25%16,899 (44%)

CO₂ avoided

72.3 kt/yr

Fuel avoided

22.1 million litres/yr

Energy unlocked

29.9 GWh/yr

Demand that is suppressed today

People served

335k

What hardware costs right now

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

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	19,099	7,881	₦23.5bn	₦22.9bn	25%	4.4 yr
D	12,631	6,923	₦16bn	₦15.7bn	51%	2.1 yr
C	6,498	1,671	₦1.91bn	₦1.91bn	23%	4.6 yr
B	206	0	₦6.09m	₦6.09m	21%	5.1 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	36,845	15,138	₦32.8bn	₦32bn	25%	4.6 yr
Commercial General	704	593	₦4.9bn	₦4.8bn	57%	1.9 yr
Commercial Retail	367	280	₦140m	₦140m	53%	1.9 yr
Worship	282	250	₦532m	₦532m	61%	1.6 yr
Anchor	204	186	₦2.88bn	₦2.84bn	75%	1.4 yr
Industrial	31	27	₦143m	₦143m	69%	1.6 yr
Productive Use	1	1	₦1.36m	₦1.36m	51%	2.1 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	15,035	6,335	₦17.9bn	₦17.5bn	25%	4.4 yr
50 100m2	8,440	3,463	₦2.76bn	₦2.63bn	23%	4.6 yr
Under 30m2	6,594	2,775	₦324m	₦324m	17%	6.4 yr
30 50m2	4,309	1,841	₦460m	₦460m	21%	5.4 yr
250 1000m2	4,032	2,044	₦18.2bn	₦17.9bn	49%	2.1 yr
Over 1000m2	24	17	₦1.69bn	₦1.69bn	53%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	17,004	6,882	₦21.2bn	₦20.7bn	25%	4.4 yr
Urban Centre	14,561	6,934	₦13.7bn	₦13.7bn	25%	4.4 yr
Unclassified	4,418	1,111	₦3.65bn	₦3.24bn	25%	4.6 yr
Dense Urban	2,309	1,477	₦2.64bn	₦2.64bn	67%	1.6 yr
Rural	142	71	₦220m	₦220m	25%	2.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	16,006	6,600	₦28.7bn	₦28.1bn	25%	4.4 yr
Residential Small	12,201	5,030	₦3.71bn	₦3.57bn	23%	4.6 yr
Shed	8,637	3,508	₦351m	₦351m	17%	6.6 yr
Kiosk Shop	368	281	₦142m	₦142m	53%	1.9 yr
Commercial	324	298	₦2.96bn	₦2.86bn	57%	1.9 yr
Institutional	224	199	₦2.52bn	₦2.52bn	57%	1.9 yr
Commercial Corridor	200	149	₦1.18bn	₦1.18bn	57%	1.9 yr
Worship Center	102	92	₦109m	₦109m	63%	1.6 yr
Place Of Worship	87	77	₦42.4m	₦42.4m	61%	1.6 yr
Educational Facility	82	77	₦471m	₦471m	81%	1.4 yr
School	54	53	₦234m	₦234m	79%	1.4 yr
Unknown	37	18	₦29.5m	₦29.5m	31%	3.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	38,434	16,475	₦41.4bn	₦40.5bn

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	37,683	15,821	₦34.3bn	₦33.5bn	25%	4.4 yr
SME High	524	447	₦4.14bn	₦4.04bn	57%	1.9 yr
Enterprise	227	207	₦2.95bn	₦2.9bn	73%	1.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	14,393	5,837	₦9.4bn	₦8.88bn
3.0	11,210	5,571	₦27.6bn	₦27.3bn
0.0	8,644	3,513	₦352m	₦352m
1.0	3,500	1,366	₦797m	₦797m
4.0	632	184	₦2.89bn	₦2.81bn
5.0	43	4	₦307m	₦290m
6.0	12	0	₦68.9m	₦68.9m