Akwa Ibom State

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

Esit Eket has 10,676 buildings with a viable rooftop and 267 MWp of roof capacity. 61% run a generator, and together they spend ₦17.2bn a year on energy.

Viable buildings

10,676

Usable roof area

1.19 km²

267 MWp roof capacity

Energy spend

₦17.2bn/yr

15 GWh/yr burned on generators

Median payback

2.1 yr

Median IRR 49% (cash saved)

The savings bracket for Esit Eket

Approach B

Cash saved

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

Current energy spend₦17.2bn/yr

Year-one cash saved₦16.9bn

Lifetime cash saved₦870bn

NPV₦131bn

Median IRR49%

Median payback2.1 yr

Unlocked energy10.4 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity50.1 MWp

Capex₦51.6bn

Year-one energy value₦39.7bn

Lifetime energy value₦1.88tn

NPV₦309bn

Median IRR79%

Median payback1.4 yr

Three ways to size Esit Eket'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: 50.1 MWp
Capital cost: ₦51.6bn
Year 1 savings: ₦39.7bn/yr
NPV: ₦309bn
Median IRR: 79%
Median payback: 1.4 yr

The odds a rooftop in Esit Eket pays back quickly

Of the 10,669 buildings in Esit Eket with a modelled payback, 88.4% pay back inside five years and 60.9% inside three.

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How much of Esit Eket's demand actually gets met

Buildings in Esit Eket consume 24.7 GWh/yr but want 35.1 GWh/yr. The 30% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Esit Eket

Loading band economics…

How many rooftops in Esit Eket 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 10,669 buildings with a modelled result out of 10,676 in Esit Eket. 10,157 clear a positive NPV.

Payback

Under 3 years6,501 (61%)

Under 5 years9,435 (88%)

Under 7 years10,154 (95%)

Under 10 years10,350 (97%)

Return (IRR)

Above 10%10,316 (97%)

Above 15%10,157 (95%)

Above 20%9,547 (89%)

Above 25%6,543 (61%)

CO₂ avoided

29.8 kt/yr

Fuel avoided

9.11 million litres/yr

Energy unlocked

10.4 GWh/yr

Demand that is suppressed today

People served

91.4k

What hardware costs right now

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

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 Esit Eket

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	4,730	2,704	₦5.11bn	₦5.1bn	47%	2.1 yr
E	2,142	1,293	₦4.71bn	₦4.55bn	65%	1.6 yr
B	1,989	1,238	₦2.02bn	₦1.99bn	49%	2.1 yr
D	1,657	1,224	₦3.98bn	₦3.95bn	63%	1.6 yr
A	158	56	₦1.34bn	₦1.28bn	25%	4.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	10,085	5,955	₦14.3bn	₦14.2bn	49%	2.1 yr
Worship	365	342	₦626m	₦626m	51%	2.1 yr
Anchor	116	114	₦1.53bn	₦1.41bn	67%	1.6 yr
Commercial General	97	93	₦568m	₦568m	49%	2.1 yr
Industrial	13	11	₦102m	₦101m	61%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	4,224	2,558	₦7.08bn	₦7.07bn	51%	2.1 yr
50 100m2	2,145	1,262	₦872m	₦872m	49%	2.1 yr
Under 30m2	1,730	1,052	₦153m	₦151m	47%	2.4 yr
250 1000m2	1,338	932	₦8.35bn	₦8.09bn	55%	1.9 yr
30 50m2	1,234	708	₦202m	₦202m	47%	2.1 yr
Over 1000m2	5	3	₦509m	₦493m	39%	2.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Dense Urban	6,928	4,812	₦10.7bn	₦10.6bn	51%	2.1 yr
Urban	2,039	990	₦3.05bn	₦3bn	25%	4.4 yr
Unclassified	1,709	713	₦3.41bn	₦3.24bn	23%	4.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	4,386	2,666	₦12.8bn	₦12.6bn	51%	2.1 yr
Residential Small	3,840	2,385	₦1.45bn	₦1.45bn	49%	2.1 yr
Shed	1,859	904	₦97.5m	₦97.5m	19%	5.4 yr
Institutional	200	190	₦1.29bn	₦1.27bn	49%	2.1 yr
Worship Center	123	116	₦107m	₦107m	53%	2.1 yr
Place Of Worship	116	108	₦83.4m	₦83.4m	51%	2.1 yr
Educational Facility	47	46	₦247m	₦247m	71%	1.4 yr
School	39	38	₦167m	₦167m	67%	1.6 yr
Healthcare Facility	14	14	₦552m	₦464m	53%	1.9 yr
Industrial Site	13	11	₦102m	₦101m	61%	1.6 yr
Market	13	11	₦29.1m	₦29.1m	53%	2.1 yr
Clinic	12	12	₦191m	₦172m	49%	2.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	10,627	6,467	₦15.9bn	₦15.6bn
Industrial	49	48	₦1.31bn	₦1.25bn

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	10,543	6,386	₦15.5bn	₦15.3bn	49%	2.1 yr
Enterprise	128	124	₦1.63bn	₦1.51bn	67%	1.6 yr
SME High	5	5	₦38m	₦38m	49%	2.1 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	4,160	2,690	₦14.3bn	₦14bn
2.0	3,934	2,412	₦2.54bn	₦2.53bn
0.0	1,857	901	₦95.9m	₦95.9m
1.0	721	508	₦160m	₦160m
4.0	4	4	₦37.5m	₦37.5m