Imo State

Rooftop solar in Ideato North, Imo: what the roofs are worth

Ideato North has 74,322 buildings with a viable rooftop and 1.78 GWp of roof capacity. 46% run a generator, and together they spend ₦33.7bn a year on energy.

Viable buildings

74,322

Usable roof area

7.94 km²

1.78 GWp roof capacity

Energy spend

₦33.7bn/yr

33.2 GWh/yr burned on generators

Median payback

4.4 yr

Median IRR 25% (cash saved)

The savings bracket for Ideato North

Approach B

Cash saved

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

Current energy spend₦33.7bn/yr

Year-one cash saved₦33.4bn

Lifetime cash saved₦1.73tn

NPV₦273bn

Median IRR25%

Median payback4.4 yr

Unlocked energy29.1 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity127 MWp

Capex₦130bn

Year-one energy value₦114bn

Lifetime energy value₦5.4tn

NPV₦907bn

Median IRR99%

Median payback1.1 yr

Three ways to size Ideato North'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: 127 MWp
Capital cost: ₦130bn
Year 1 savings: ₦114bn/yr
NPV: ₦907bn
Median IRR: 99%
Median payback: 1.1 yr

The odds a rooftop in Ideato North pays back quickly

Of the 74,084 buildings in Ideato North with a modelled payback, 68.1% pay back inside five years and 45.5% inside three.

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How much of Ideato North's demand actually gets met

Buildings in Ideato North consume 46.8 GWh/yr but want 75.8 GWh/yr. The 38% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Ideato North

Loading band economics…

How many rooftops in Ideato North 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 74,084 buildings with a modelled result out of 74,322 in Ideato North. 60,130 clear a positive NPV.

Payback

Under 3 years33,707 (45%)

Under 5 years50,422 (68%)

Under 7 years60,043 (81%)

Under 10 years67,127 (91%)

Return (IRR)

Above 10%65,751 (88%)

Above 15%60,130 (81%)

Above 20%52,832 (71%)

Above 25%37,617 (51%)

CO₂ avoided

60.6 kt/yr

Fuel avoided

17.7 million litres/yr

Energy unlocked

29.1 GWh/yr

Demand that is suppressed today

People served

262k

What hardware costs right now

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

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 Ideato North

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	28,980	14,611	₦12.1bn	₦11.9bn	41%	2.6 yr
E	22,684	9,927	₦12.9bn	₦12.9bn	25%	4.4 yr
D	18,113	7,305	₦7.69bn	₦7.64bn	25%	4.4 yr
B	4,545	2,013	₦964m	₦964m	25%	4.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	72,978	32,644	₦23.6bn	₦23.6bn	25%	4.4 yr
Commercial General	523	480	₦2.76bn	₦2.71bn	59%	1.9 yr
Anchor	467	413	₦6.19bn	₦6.07bn	65%	1.6 yr
Industrial	158	140	₦629m	₦585m	67%	1.6 yr
Worship	99	92	₦343m	₦343m	61%	1.6 yr
Commercial Retail	77	74	₦30.9m	₦30.9m	61%	1.6 yr
Filling Station	15	9	₦24.8m	₦24.8m	57%	1.9 yr
Hospitality	5	4	₦89m	₦89m	55%	1.9 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	28,473	12,685	₦11.8bn	₦11.8bn	25%	4.4 yr
50 100m2	17,565	7,868	₦1.93bn	₦1.93bn	23%	4.6 yr
Under 30m2	10,277	4,760	₦390m	₦390m	17%	6.1 yr
30 50m2	9,586	4,432	₦557m	₦557m	19%	5.6 yr
250 1000m2	8,312	4,022	₦13.9bn	₦13.9bn	25%	4.4 yr
Over 1000m2	109	89	₦5.11bn	₦4.91bn	71%	1.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	57,806	29,028	₦26.4bn	₦26.2bn	35%	2.9 yr
Urban	13,805	4,007	₦6.34bn	₦6.3bn	25%	4.4 yr
Unclassified	1,559	328	₦326m	₦326m	23%	4.9 yr
Dense Urban	1,152	493	₦657m	₦657m	25%	4.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	28,831	13,218	₦2.93bn	₦2.93bn	25%	4.4 yr
Residential	28,111	12,581	₦19.7bn	₦19.7bn	25%	4.4 yr
Shed	14,288	6,090	₦530m	₦530m	15%	6.9 yr
Residential Formal	1,563	655	₦403m	₦403m	25%	4.4 yr
Institutional	368	327	₦5.06bn	₦4.91bn	57%	1.9 yr
Commercial	221	218	₦1.52bn	₦1.48bn	63%	1.6 yr
Educational Facility	141	127	₦818m	₦818m	81%	1.4 yr
Apartment	135	81	₦42.7m	₦42.7m	57%	1.9 yr
School	125	119	₦410m	₦410m	81%	1.4 yr
Industrial Site	87	76	₦352m	₦352m	69%	1.6 yr
Kiosk Shop	77	74	₦30.9m	₦30.9m	61%	1.6 yr
Healthcare Facility	75	63	₦732m	₦732m	51%	2.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	74,276	33,833	₦33.7bn	₦33.4bn
Commercial	27	19	₦12.6m	₦12.6m
Farmyard	18	3	₦6.1m	₦6.1m
Farmland	1	1	₦869k	₦869k

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	73,459	33,073	₦25.2bn	₦25.2bn	25%	4.4 yr
Enterprise	625	553	₦6.82bn	₦6.65bn	65%	1.6 yr
SME High	238	230	₦1.64bn	₦1.6bn	63%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	46,804	21,581	₦29.8bn	₦29.5bn
0.0	14,295	6,094	₦531m	₦531m
2.0	10,859	4,989	₦1.22bn	₦1.22bn
4.0	1,734	825	₦1.6bn	₦1.6bn
1.0	621	358	₦55.3m	₦55.2m
5.0	8	8	₦517m	₦473m
6.0	1	1	₦14.3m	₦14.3m