Imo State

Rooftop solar in Ihitte/Uboma, Imo: what the roofs are worth

Ihitte/Uboma has 26,592 buildings with a viable rooftop and 581 MWp of roof capacity. 53% run a generator, and together they spend ₦24.3bn a year on energy.

Viable buildings

26,592

Usable roof area

2.59 km²

581 MWp roof capacity

Energy spend

₦24.3bn/yr

23.8 GWh/yr burned on generators

Median payback

1.9 yr

Median IRR 53% (cash saved)

The savings bracket for Ihitte/Uboma

Approach B

Cash saved

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

Current energy spend₦24.3bn/yr

Year-one cash saved₦24.2bn

Lifetime cash saved₦1.25tn

NPV₦198bn

Median IRR53%

Median payback1.9 yr

Unlocked energy19.1 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity85.5 MWp

Capex₦86.6bn

Year-one energy value₦77.3bn

Lifetime energy value₦3.67tn

NPV₦619bn

Median IRR99%

Median payback1.1 yr

Three ways to size Ihitte/Uboma'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: 85.5 MWp
Capital cost: ₦86.6bn
Year 1 savings: ₦77.3bn/yr
NPV: ₦619bn
Median IRR: 99%
Median payback: 1.1 yr

The odds a rooftop in Ihitte/Uboma pays back quickly

Of the 26,534 buildings in Ihitte/Uboma with a modelled payback, 77.1% pay back inside five years and 53.0% inside three.

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How much of Ihitte/Uboma's demand actually gets met

Buildings in Ihitte/Uboma consume 31.9 GWh/yr but want 51 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 Ihitte/Uboma

Loading band economics…

How many rooftops in Ihitte/Uboma 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 26,534 buildings with a modelled result out of 26,592 in Ihitte/Uboma. 22,523 clear a positive NPV.

Payback

Under 3 years14,060 (53%)

Under 5 years20,445 (77%)

Under 7 years22,504 (85%)

Under 10 years23,891 (90%)

Return (IRR)

Above 10%23,470 (88%)

Above 15%22,523 (85%)

Above 20%21,184 (80%)

Above 25%15,318 (58%)

CO₂ avoided

43 kt/yr

Fuel avoided

13.1 million litres/yr

Energy unlocked

19.1 GWh/yr

Demand that is suppressed today

People served

173k

What hardware costs right now

Median advertised rates from our Nigerian market tracker — the same prices used to cost a system in Ihitte/Uboma.

Solar panels

₦250

₦/W

Inverters

₦127,419

₦/kVA

Batteries

₦177,500

₦/kWh

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Building mix in Ihitte/Uboma

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
D	11,201	5,844	₦13.2bn	₦13.1bn	59%	1.9 yr
E	10,215	4,925	₦7.46bn	₦7.45bn	25%	4.4 yr
C	5,176	3,307	₦3.6bn	₦3.6bn	59%	1.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	25,563	13,143	₦17.7bn	₦17.7bn	51%	2.1 yr
Commercial General	466	423	₦2.19bn	₦2.19bn	59%	1.9 yr
Anchor	231	207	₦2.54bn	₦2.52bn	77%	1.4 yr
Commercial Retail	134	131	₦31.8m	₦31.8m	63%	1.6 yr
Worship	114	102	₦121m	₦121m	61%	1.6 yr
Industrial	82	68	₦1.63bn	₦1.63bn	67%	1.6 yr
Filling Station	1	1	₦268k	₦268k	45%	2.4 yr
Hospitality	1	1	₦227k	₦227k	49%	2.1 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	9,133	4,810	₦9.7bn	₦9.66bn	53%	1.9 yr
50 100m2	5,806	3,010	₦1.54bn	₦1.54bn	51%	2.1 yr
Under 30m2	5,274	2,809	₦277m	₦277m	51%	1.9 yr
30 50m2	3,676	1,918	₦365m	₦365m	51%	2.1 yr
250 1000m2	2,681	1,509	₦9.53bn	₦9.5bn	61%	1.6 yr
Over 1000m2	22	20	₦2.84bn	₦2.84bn	73%	1.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	17,968	9,379	₦13.4bn	₦13.3bn	49%	2.1 yr
Urban	7,831	4,370	₦9.38bn	₦9.36bn	63%	1.6 yr
Unclassified	793	327	₦1.5bn	₦1.5bn	25%	4.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	9,808	5,120	₦2.41bn	₦2.41bn	65%	1.6 yr
Residential	8,911	4,551	₦14.8bn	₦14.7bn	69%	1.6 yr
Shed	6,026	2,869	₦251m	₦251m	11%	9.1 yr
Residential Formal	734	558	₦294m	₦294m	49%	2.1 yr
Commercial	253	233	₦1.42bn	₦1.42bn	67%	1.6 yr
Institutional	193	163	₦2.84bn	₦2.84bn	57%	1.9 yr
Kiosk Shop	134	131	₦31.8m	₦31.8m	63%	1.6 yr
Educational Facility	75	68	₦342m	₦342m	83%	1.4 yr
School	64	58	₦138m	₦138m	81%	1.4 yr
Commercial Corridor	61	61	₦175m	₦175m	47%	2.4 yr
Apartment	47	19	₦11.4m	₦11.4m	25%	4.4 yr
Industrial Site	43	33	₦257m	₦257m	69%	1.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	26,591	14,076	₦24.3bn	₦24.2bn
Farmland	1	0	₦15.1k	₦15.1k

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	25,971	13,511	₦18.6bn	₦18.5bn	51%	2.1 yr
SME High	316	296	₦1.6bn	₦1.6bn	65%	1.6 yr
Enterprise	305	269	₦4.1bn	₦4.08bn	69%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	15,647	8,334	₦21.2bn	₦21.2bn
0.0	6,037	2,873	₦252m	₦252m
2.0	3,225	1,790	₦801m	₦801m
4.0	1,229	703	₦1.23bn	₦1.23bn
1.0	346	275	₦62.6m	₦62.6m
5.0	60	59	₦376m	₦376m
6.0	48	42	₦278m	₦278m