Imo State

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

Mbatoli has 98,805 buildings with a viable rooftop and 2.29 GWp of roof capacity. 53% run a generator, and together they spend ₦53.5bn a year on energy.

Viable buildings

98,805

Usable roof area

10.2 km²

2.29 GWp roof capacity

Energy spend

₦53.5bn/yr

48.8 GWh/yr burned on generators

Median payback

2.4 yr

Median IRR 43% (cash saved)

The savings bracket for Mbatoli

Approach B

Cash saved

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

Current energy spend₦53.5bn/yr

Year-one cash saved₦52.9bn

Lifetime cash saved₦2.77tn

NPV₦425bn

Median IRR43%

Median payback2.4 yr

Unlocked energy42.6 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity182 MWp

Capex₦182bn

Year-one energy value₦147bn

Lifetime energy value₦6.98tn

NPV₦1.16tn

Median IRR95%

Median payback1.1 yr

Three ways to size Mbatoli'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: 182 MWp
Capital cost: ₦182bn
Year 1 savings: ₦147bn/yr
NPV: ₦1.16tn
Median IRR: 95%
Median payback: 1.1 yr

The odds a rooftop in Mbatoli pays back quickly

Of the 98,402 buildings in Mbatoli with a modelled payback, 73.8% pay back inside five years and 51.8% inside three.

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How much of Mbatoli's demand actually gets met

Buildings in Mbatoli consume 79.5 GWh/yr but want 122 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 Mbatoli

Loading band economics…

How many rooftops in Mbatoli 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 98,402 buildings with a modelled result out of 98,805 in Mbatoli. 83,913 clear a positive NPV.

Payback

Under 3 years50,932 (52%)

Under 5 years72,584 (74%)

Under 7 years83,820 (85%)

Under 10 years90,677 (92%)

Return (IRR)

Above 10%89,292 (90%)

Above 15%83,913 (85%)

Above 20%75,712 (77%)

Above 25%54,630 (55%)

CO₂ avoided

96.7 kt/yr

Fuel avoided

27.6 million litres/yr

Energy unlocked

42.6 GWh/yr

Demand that is suppressed today

People served

287k

What hardware costs right now

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

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 Mbatoli

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	28,035	16,121	₦16.6bn	₦16.6bn	53%	2.1 yr
D	23,134	11,310	₦11.3bn	₦11.2bn	27%	3.4 yr
B	19,967	10,634	₦9.91bn	₦9.51bn	37%	2.9 yr
E	19,502	10,381	₦10.9bn	₦10.9bn	61%	1.6 yr
A	8,167	4,268	₦4.79bn	₦4.72bn	29%	3.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	95,126	50,432	₦39.6bn	₦39.2bn	43%	2.4 yr
Commercial General	1,950	1,159	₦7.66bn	₦7.66bn	43%	2.6 yr
Commercial Retail	936	450	₦175m	₦175m	33%	3.4 yr
Anchor	533	445	₦5.36bn	₦5.19bn	65%	1.6 yr
Worship	155	146	₦311m	₦311m	61%	1.6 yr
Industrial	84	65	₦331m	₦331m	59%	1.9 yr
Filling Station	18	14	₦55.8m	₦55.8m	53%	1.9 yr
Hospitality	2	2	₦1.39m	₦1.39m	31%	2.6 yr
Productive Use	1	1	₦1.92m	₦1.92m	47%	2.4 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	36,078	19,194	₦21.3bn	₦20.9bn	45%	2.4 yr
50 100m2	20,748	10,856	₦3.2bn	₦3.2bn	43%	2.6 yr
Under 30m2	17,556	9,205	₦833m	₦832m	33%	2.9 yr
30 50m2	13,103	6,885	₦1.08bn	₦1.05bn	39%	2.6 yr
250 1000m2	11,212	6,497	₦23.6bn	₦23.5bn	49%	2.1 yr
Over 1000m2	108	77	₦3.5bn	₦3.47bn	51%	2.1 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	92,790	49,748	₦49.2bn	₦48.6bn	43%	2.4 yr
Unclassified	5,248	2,632	₦3.69bn	₦3.65bn	29%	3.6 yr
Urban	767	334	₦664m	₦664m	33%	3.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	31,364	17,555	₦5.15bn	₦4.78bn	51%	2.1 yr
Residential	31,079	17,575	₦30.5bn	₦30.4bn	53%	1.9 yr
Shed	20,260	10,701	₦1bn	₦1bn	43%	2.4 yr
Residential Formal	6,082	1,162	₦598m	₦598m	23%	4.9 yr
Residential Informal	5,009	3,138	₦2.25bn	₦2.25bn	37%	2.9 yr
Apartment	1,217	275	₦111m	₦111m	25%	4.6 yr
Kiosk Shop	936	450	₦175m	₦175m	33%	3.4 yr
Commercial	853	542	₦4.08bn	₦4.08bn	47%	2.4 yr
Commercial Corridor	661	262	₦1.89bn	₦1.89bn	35%	3.1 yr
Institutional	390	331	₦3.76bn	₦3.73bn	55%	1.9 yr
Educational Facility	177	146	₦856m	₦856m	79%	1.4 yr
School	155	127	₦358m	₦358m	77%	1.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	98,805	52,714	₦53.5bn	₦52.9bn

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	96,674	51,399	₦41.9bn	₦41.4bn	43%	2.4 yr
SME High	1,533	819	₦6.03bn	₦6.03bn	39%	2.6 yr
Enterprise	598	496	₦5.61bn	₦5.44bn	63%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	58,285	33,341	₦41.7bn	₦41.2bn
0.0	20,265	10,705	₦1bn	₦1bn
4.0	12,203	4,427	₦6.47bn	₦6.4bn
2.0	6,478	3,446	₦935m	₦934m
1.0	706	437	₦96.5m	₦96.5m
5.0	668	244	₦1.44bn	₦1.44bn
6.0	200	114	₦1.83bn	₦1.83bn