Imo State

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

Owerri North has 103,592 buildings with a viable rooftop and 2.78 GWp of roof capacity. 49% run a generator, and together they spend ₦51.9bn a year on energy.

Viable buildings

103,592

Usable roof area

12.4 km²

2.78 GWp roof capacity

Energy spend

₦51.9bn/yr

44.5 GWh/yr burned on generators

Median payback

4.4 yr

Median IRR 25% (cash saved)

The savings bracket for Owerri North

Approach B

Cash saved

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

Current energy spend₦51.9bn/yr

Year-one cash saved₦51.6bn

Lifetime cash saved₦2.8tn

NPV₦401bn

Median IRR25%

Median payback4.4 yr

Unlocked energy53.6 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity208 MWp

Capex₦198bn

Year-one energy value₦130bn

Lifetime energy value₦6.09tn

NPV₦976bn

Median IRR65%

Median payback1.6 yr

Three ways to size Owerri 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: 208 MWp
Capital cost: ₦198bn
Year 1 savings: ₦130bn/yr
NPV: ₦976bn
Median IRR: 65%
Median payback: 1.6 yr

The odds a rooftop in Owerri North pays back quickly

Of the 102,762 buildings in Owerri North with a modelled payback, 72.3% pay back inside five years and 35.0% inside three.

Create a free account

How much of Owerri North's demand actually gets met

Buildings in Owerri North consume 108 GWh/yr but want 161 GWh/yr. The 33% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Owerri North

Loading band economics…

How many rooftops in Owerri 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 102,762 buildings with a modelled result out of 103,592 in Owerri North. 88,589 clear a positive NPV.

Payback

Under 3 years35,959 (35%)

Under 5 years74,279 (72%)

Under 7 years88,443 (86%)

Under 10 years96,646 (94%)

Return (IRR)

Above 10%95,582 (92%)

Above 15%88,589 (86%)

Above 20%78,347 (76%)

Above 25%50,042 (48%)

CO₂ avoided

102 kt/yr

Fuel avoided

21.3 million litres/yr

Energy unlocked

53.6 GWh/yr

Demand that is suppressed today

People served

219k

What hardware costs right now

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

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
A	70,121	33,618	₦25.7bn	₦25.5bn	25%	4.4 yr
B	14,473	7,990	₦10.2bn	₦10.2bn	35%	2.9 yr
C	9,425	5,166	₦8.65bn	₦8.59bn	47%	2.1 yr
E	5,321	2,379	₦2.9bn	₦2.83bn	25%	4.4 yr
D	4,252	1,769	₦4.49bn	₦4.48bn	25%	4.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	98,572	47,444	₦27.8bn	₦27.7bn	25%	4.4 yr
Commercial General	2,713	2,002	₦14.9bn	₦14.8bn	47%	2.4 yr
Commercial Retail	1,125	916	₦368m	₦368m	45%	2.4 yr
Anchor	704	341	₦7.78bn	₦7.59bn	41%	2.6 yr
Industrial	225	124	₦610m	₦609m	39%	2.9 yr
Worship	136	61	₦117m	₦117m	33%	3.1 yr
Hospitality	80	19	₦359m	₦348m	33%	3.4 yr
Filling Station	20	9	₦12.3m	₦12.3m	33%	3.1 yr
Mall Retail	12	5	₦12.5m	₦12.5m	35%	3.1 yr
Productive Use	4	0	₦2.73m	₦2.73m	33%	3.1 yr
Automotive	1	1	₦3.42m	₦3.42m	33%	3.1 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	34,707	17,211	₦15.1bn	₦15.1bn	25%	4.4 yr
50 100m2	19,407	9,250	₦2.37bn	₦2.34bn	25%	4.6 yr
Under 30m2	18,264	8,824	₦629m	₦626m	17%	6.1 yr
250 1000m2	17,457	8,955	₦25.1bn	₦25bn	29%	3.9 yr
30 50m2	13,453	6,520	₦833m	₦821m	21%	5.1 yr
Over 1000m2	304	162	₦7.86bn	₦7.67bn	35%	3.1 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	85,993	42,718	₦36.5bn	₦36.3bn	25%	4.4 yr
Urban	7,516	3,963	₦7.3bn	₦7.21bn	51%	2.1 yr
Unclassified	6,401	3,205	₦4.75bn	₦4.68bn	25%	4.4 yr
Dense Urban	3,473	979	₦3.35bn	₦3.35bn	25%	4.6 yr
Rural	209	57	₦57.7m	₦57.7m	25%	4.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Formal	41,171	19,244	₦5.5bn	₦5.49bn	25%	4.4 yr
Residential	16,145	9,594	₦17.8bn	₦17.8bn	51%	2.1 yr
Residential Informal	15,482	4,734	₦1.77bn	₦1.77bn	25%	4.4 yr
Residential Small	13,841	7,830	₦1.96bn	₦1.93bn	45%	2.4 yr
Shed	9,824	5,389	₦533m	₦533m	37%	2.9 yr
Apartment	1,530	432	₦141m	₦140m	25%	4.6 yr
Commercial	1,134	1,067	₦8.34bn	₦8.27bn	49%	2.1 yr
Kiosk Shop	1,126	916	₦367m	₦367m	45%	2.4 yr
Commercial Corridor	752	563	₦4.25bn	₦4.23bn	45%	2.4 yr
Duplex	539	205	₦42.6m	₦42.6m	25%	4.4 yr
Institutional	483	249	₦5.74bn	₦5.64bn	31%	3.4 yr
Unknown	354	147	₦1bn	₦998m	31%	3.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	103,592	50,922	₦51.9bn	₦51.6bn

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	100,749	48,823	₦30.9bn	₦30.8bn	25%	4.4 yr
SME High	1,953	1,653	₦12.8bn	₦12.7bn	49%	2.1 yr
Enterprise	890	446	₦8.26bn	₦8.08bn	41%	2.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
4.0	38,215	16,968	₦13.4bn	₦13.3bn
3.0	35,086	18,756	₦27.6bn	₦27.4bn
2.0	16,389	7,549	₦1.69bn	₦1.67bn
0.0	9,848	5,401	₦537m	₦537m
1.0	2,946	1,326	₦239m	₦238m
5.0	794	645	₦4.22bn	₦4.2bn
6.0	314	277	₦4.25bn	₦4.16bn