Akwa Ibom State

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

Essien Udim has 57,023 buildings with a viable rooftop and 1.18 GWp of roof capacity. 31% run a generator, and together they spend ₦27.1bn a year on energy.

Viable buildings

57,023

Usable roof area

5.28 km²

1.18 GWp roof capacity

Energy spend

₦27.1bn/yr

26.3 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 23% (cash saved)

The savings bracket for Essien Udim

Approach B

Cash saved

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

Current energy spend₦27.1bn/yr

Year-one cash saved₦27bn

Lifetime cash saved₦1.41tn

NPV₦217bn

Median IRR23%

Median payback4.6 yr

Unlocked energy22.7 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity137 MWp

Capex₦139bn

Year-one energy value₦120bn

Lifetime energy value₦5.7tn

NPV₦956bn

Median IRR95%

Median payback1.1 yr

Three ways to size Essien Udim'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: 137 MWp
Capital cost: ₦139bn
Year 1 savings: ₦120bn/yr
NPV: ₦956bn
Median IRR: 95%
Median payback: 1.1 yr

The odds a rooftop in Essien Udim pays back quickly

Of the 56,831 buildings in Essien Udim with a modelled payback, 60.2% pay back inside five years and 30.8% inside three.

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How much of Essien Udim's demand actually gets met

Buildings in Essien Udim consume 38.8 GWh/yr but want 61.5 GWh/yr. The 37% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Essien Udim

Loading band economics…

How many rooftops in Essien Udim 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 56,831 buildings with a modelled result out of 57,023 in Essien Udim. 43,239 clear a positive NPV.

Payback

Under 3 years17,524 (31%)

Under 5 years34,211 (60%)

Under 7 years43,150 (76%)

Under 10 years47,431 (83%)

Return (IRR)

Above 10%46,147 (81%)

Above 15%43,239 (76%)

Above 20%37,339 (65%)

Above 25%18,118 (32%)

CO₂ avoided

48.9 kt/yr

Fuel avoided

14.1 million litres/yr

Energy unlocked

22.7 GWh/yr

Demand that is suppressed today

People served

284k

What hardware costs right now

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

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 Essien Udim

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	40,487	13,154	₦20.1bn	₦20.1bn	23%	4.6 yr
D	16,536	4,388	₦7.03bn	₦6.97bn	23%	4.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	55,199	16,323	₦19.1bn	₦19bn	23%	4.6 yr
Commercial General	930	560	₦2.86bn	₦2.85bn	53%	1.9 yr
Commercial Retail	346	178	₦36.8m	₦36.8m	39%	2.9 yr
Worship	304	273	₦589m	₦589m	61%	1.6 yr
Anchor	183	163	₦4.4bn	₦4.37bn	77%	1.4 yr
Industrial	60	44	₦130m	₦130m	67%	1.6 yr
Hospitality	1	1	₦772k	₦772k	59%	1.9 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	18,456	5,583	₦9.4bn	₦9.4bn	23%	4.6 yr
50 100m2	14,564	4,162	₦1.85bn	₦1.82bn	21%	5.1 yr
Under 30m2	10,865	3,273	₦322m	₦322m	7%	13.9 yr
30 50m2	8,331	2,470	₦474m	₦445m	11%	8.9 yr
250 1000m2	4,742	2,012	₦11.2bn	₦11.1bn	25%	4.4 yr
Over 1000m2	65	42	₦3.9bn	₦3.9bn	59%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	21,074	6,025	₦9.25bn	₦9.21bn	23%	4.6 yr
Urban Centre	17,512	4,872	₦9.27bn	₦9.23bn	23%	4.6 yr
Dense Urban	10,706	5,221	₦6.39bn	₦6.39bn	25%	4.4 yr
Unclassified	7,731	1,424	₦2.22bn	₦2.19bn	21%	5.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	21,389	6,289	₦2.66bn	₦2.6bn	21%	4.9 yr
Residential	18,093	5,799	₦16bn	₦16bn	25%	4.6 yr
Shed	15,222	4,235	₦423m	₦423m	9%	13.1 yr
Commercial	507	200	₦1.15bn	₦1.15bn	33%	3.1 yr
Residential Informal	495	0	₦25.1m	₦25.1m	23%	4.6 yr
Kiosk Shop	346	178	₦36.8m	₦36.8m	39%	2.9 yr
Institutional	249	218	₦3.96bn	₦3.96bn	57%	1.9 yr
Commercial Corridor	195	179	₦622m	₦622m	61%	1.6 yr
Worship Center	117	103	₦180m	₦180m	63%	1.6 yr
Place Of Worship	85	77	₦45.2m	₦45.2m	61%	1.6 yr
Educational Facility	77	68	₦481m	₦481m	81%	1.4 yr
Unknown	52	32	₦55.4m	₦55.4m	53%	1.9 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	57,023	17,542	₦27.1bn	₦27bn

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	56,091	16,962	₦20.8bn	₦20.8bn	23%	4.6 yr
SME High	703	380	₦1.77bn	₦1.77bn	41%	2.6 yr
Enterprise	229	200	₦4.51bn	₦4.48bn	71%	1.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	21,719	6,341	₦4.27bn	₦4.22bn
3.0	15,594	5,545	₦20.5bn	₦20.5bn
0.0	15,231	4,244	₦424m	₦424m
1.0	4,186	1,216	₦339m	₦339m
4.0	279	184	₦1.19bn	₦1.19bn
5.0	14	12	₦364m	₦364m