Imo State

Rooftop solar in Ikeduru, Imo: what the roofs are worth

Ikeduru has 61,555 buildings with a viable rooftop and 1.39 GWp of roof capacity. 51% run a generator, and together they spend ₦37.8bn a year on energy.

Viable buildings

61,555

Usable roof area

6.21 km²

1.39 GWp roof capacity

Energy spend

₦37.8bn/yr

36 GWh/yr burned on generators

Median payback

3.1 yr

Median IRR 35% (cash saved)

The savings bracket for Ikeduru

Approach B

Cash saved

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

Current energy spend₦37.8bn/yr

Year-one cash saved₦37.4bn

Lifetime cash saved₦1.92tn

NPV₦302bn

Median IRR35%

Median payback3.1 yr

Unlocked energy28.5 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity128 MWp

Capex₦130bn

Year-one energy value₦113bn

Lifetime energy value₦5.35tn

NPV₦898bn

Median IRR97%

Median payback1.1 yr

Three ways to size Ikeduru'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: 128 MWp
Capital cost: ₦130bn
Year 1 savings: ₦113bn/yr
NPV: ₦898bn
Median IRR: 97%
Median payback: 1.1 yr

The odds a rooftop in Ikeduru pays back quickly

Of the 61,293 buildings in Ikeduru with a modelled payback, 72.7% pay back inside five years and 50.0% inside three.

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How much of Ikeduru's demand actually gets met

Buildings in Ikeduru consume 51.5 GWh/yr but want 79.9 GWh/yr. The 36% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Ikeduru

Loading band economics…

How many rooftops in Ikeduru 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 61,293 buildings with a modelled result out of 61,555 in Ikeduru. 51,623 clear a positive NPV.

Payback

Under 3 years30,632 (50%)

Under 5 years44,556 (73%)

Under 7 years51,564 (84%)

Under 10 years55,738 (91%)

Return (IRR)

Above 10%54,764 (89%)

Above 15%51,623 (84%)

Above 20%46,500 (76%)

Above 25%32,525 (53%)

CO₂ avoided

66.7 kt/yr

Fuel avoided

20.2 million litres/yr

Energy unlocked

28.5 GWh/yr

Demand that is suppressed today

People served

242k

What hardware costs right now

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

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 Ikeduru

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
D	21,723	11,410	₦12.5bn	₦12.5bn	61%	1.6 yr
E	19,132	10,157	₦15.5bn	₦15.2bn	61%	1.6 yr
C	13,191	6,472	₦5.88bn	₦5.88bn	25%	4.4 yr
B	6,368	2,723	₦3.41bn	₦3.4bn	25%	4.4 yr
A	1,141	515	₦493m	₦471m	25%	4.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	59,694	29,696	₦28.1bn	₦28bn	25%	4.4 yr
Commercial General	856	707	₦2.82bn	₦2.82bn	43%	2.6 yr
Anchor	423	381	₦3.98bn	₦3.84bn	67%	1.6 yr
Commercial Retail	301	239	₦42m	₦42m	39%	2.6 yr
Worship	197	180	₦522m	₦522m	61%	1.6 yr
Industrial	79	70	₦2.24bn	₦2.2bn	69%	1.6 yr
Hospitality	3	3	₦5.47m	₦5.47m	65%	1.6 yr
Filling Station	2	1	₦363k	₦363k	31%	2.1 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	23,237	11,721	₦14.3bn	₦14.3bn	33%	3.1 yr
50 100m2	13,476	6,837	₦2.32bn	₦2.32bn	33%	3.1 yr
Under 30m2	10,408	5,203	₦459m	₦459m	23%	3.4 yr
30 50m2	8,172	4,106	₦620m	₦619m	29%	3.4 yr
250 1000m2	6,215	3,371	₦16.4bn	₦16.2bn	53%	2.1 yr
Over 1000m2	47	39	₦3.64bn	₦3.56bn	69%	1.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	47,762	24,459	₦29.9bn	₦29.7bn	35%	2.9 yr
Urban	9,333	4,682	₦5.98bn	₦5.8bn	47%	2.1 yr
Unclassified	2,654	1,219	₦1.31bn	₦1.31bn	25%	4.4 yr
Dense Urban	1,806	917	₦605m	₦605m	53%	1.9 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	22,782	11,695	₦3.58bn	₦3.58bn	45%	2.4 yr
Residential	22,429	11,458	₦23.9bn	₦23.7bn	47%	2.1 yr
Shed	13,092	6,059	₦542m	₦542m	17%	6.1 yr
Residential Formal	859	336	₦77.3m	₦77.3m	25%	4.4 yr
Residential Informal	443	116	₦35.9m	₦35.9m	25%	4.4 yr
Institutional	351	313	₦2.59bn	₦2.56bn	57%	1.9 yr
Commercial Corridor	337	252	₦618m	₦618m	39%	2.6 yr
Kiosk Shop	301	239	₦42m	₦42m	39%	2.6 yr
Commercial	197	166	₦908m	₦902m	37%	2.9 yr
Educational Facility	139	126	₦885m	₦885m	83%	1.4 yr
School	102	91	₦265m	₦265m	81%	1.4 yr
Healthcare Facility	77	70	₦1.27bn	₦1.23bn	53%	1.9 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	61,555	31,277	₦37.8bn	₦37.4bn

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	60,515	30,405	₦30bn	₦29.9bn	29%	3.6 yr
SME High	539	422	₦1.53bn	₦1.52bn	39%	2.9 yr
Enterprise	501	450	₦6.22bn	₦6.04bn	69%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	36,721	19,256	₦32.4bn	₦32.1bn
0.0	13,051	6,058	₦546m	₦546m
2.0	9,133	4,513	₦1.4bn	₦1.39bn
4.0	1,431	641	₦872m	₦872m
1.0	992	611	₦76.9m	₦76.9m
5.0	180	160	₦424m	₦418m
6.0	47	38	₦2.04bn	₦2bn