Yobe State

Rooftop solar in Damaturu, Yobe: what the roofs are worth

Damaturu has 127,905 buildings with a viable rooftop and 1.27 GWp of roof capacity. 7% run a generator, and together they spend ₦25.4bn a year on energy.

Viable buildings

127,905

Usable roof area

5.72 km²

1.27 GWp roof capacity

Energy spend

₦25.4bn/yr

20.1 GWh/yr burned on generators

Median payback

5.1 yr

Median IRR 21% (cash saved)

The savings bracket for Damaturu

Approach B

Cash saved

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

Current energy spend₦25.4bn/yr

Year-one cash saved₦24.3bn

Lifetime cash saved₦1.4tn

NPV₦202bn

Median IRR21%

Median payback5.1 yr

Unlocked energy33.7 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity114 MWp

Capex₦114bn

Year-one energy value₦84.6bn

Lifetime energy value₦3.98tn

NPV₦653bn

Median IRR83%

Median payback1.4 yr

Three ways to size Damaturu'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: 114 MWp
Capital cost: ₦114bn
Year 1 savings: ₦84.6bn/yr
NPV: ₦653bn
Median IRR: 83%
Median payback: 1.4 yr

The odds a rooftop in Damaturu pays back quickly

Of the 126,583 buildings in Damaturu with a modelled payback, 47.7% pay back inside five years and 10.7% inside three.

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How much of Damaturu's demand actually gets met

Buildings in Damaturu consume 64.8 GWh/yr but want 98.5 GWh/yr. The 34% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Damaturu

Loading band economics…

How many rooftops in Damaturu 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 126,583 buildings with a modelled result out of 127,905 in Damaturu. 81,316 clear a positive NPV.

Payback

Under 3 years13,513 (11%)

Under 5 years60,430 (48%)

Under 7 years81,497 (64%)

Under 10 years92,936 (73%)

Return (IRR)

Above 10%91,204 (71%)

Above 15%81,316 (64%)

Above 20%66,770 (52%)

Above 25%49,040 (38%)

CO₂ avoided

52.8 kt/yr

Fuel avoided

7.93 million litres/yr

Energy unlocked

33.7 GWh/yr

Demand that is suppressed today

People served

165k

What hardware costs right now

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

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 Damaturu

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
A	52,593	5,410	₦11.3bn	₦11.1bn	27%	4.1 yr
B	36,154	3,200	₦9.27bn	₦9.05bn	23%	4.6 yr
C	13,657	539	₦3.89bn	₦3.16bn	9%	9.6 yr
E	13,005	98	₦580m	₦555m	5%	17.6 yr
D	12,496	70	₦445m	₦445m	5%	17.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	119,910	7,194	₦9.47bn	₦9.26bn	19%	5.4 yr
Commercial Retail	4,800	1,027	₦487m	₦487m	37%	2.9 yr
Commercial General	2,964	989	₦7.35bn	₦7.32bn	39%	2.9 yr
Anchor	189	100	₦8.02bn	₦7.11bn	47%	2.4 yr
Hospitality	19	0	₦112m	₦112m	37%	2.9 yr
Worship	11	4	₦1.46m	₦1.46m	37%	2.9 yr
Filling Station	4	2	₦5.41m	₦5.41m	39%	1.9 yr
Industrial	3	0	₦99.4k	₦99.4k	31%	3.4 yr
Mall Retail	2	0	₦322k	₦322k	37%	2.9 yr
Productive Use	2	1	₦1.69m	₦1.69m	37%	2.1 yr
Automotive	1	0	₦211k	₦211k	33%	3.4 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	60,519	2,876	₦595m	₦595m	9%	13.1 yr
50 100m2	25,285	1,864	₦1.65bn	₦1.64bn	29%	3.9 yr
30 50m2	23,993	1,453	₦773m	₦645m	23%	4.9 yr
100 250m2	14,944	2,096	₦5.51bn	₦5.44bn	31%	3.4 yr
250 1000m2	2,960	918	₦7.57bn	₦7.52bn	33%	3.4 yr
Over 1000m2	204	110	₦9.35bn	₦8.46bn	43%	2.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	81,155	7,183	₦15.4bn	₦15.1bn	25%	4.4 yr
Unclassified	29,731	907	₦3.57bn	₦3.48bn	5%	17.4 yr
Urban	12,005	987	₦6.2bn	₦5.46bn	17%	6.1 yr
Rural	5,014	240	₦241m	₦241m	7%	14.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	53,924	2,559	₦458m	₦458m	7%	14.6 yr
Residential Formal	25,901	1	₦471m	₦469m	25%	4.4 yr
Residential Informal	16,744	442	₦771m	₦771m	25%	4.4 yr
Residential Small	14,990	2,258	₦1.39bn	₦1.25bn	29%	3.6 yr
Residential	8,132	1,934	₦6.38bn	₦6.3bn	31%	3.4 yr
Kiosk Shop	4,793	1,019	₦417m	₦417m	37%	2.9 yr
Commercial	1,769	640	₦5.22bn	₦5.19bn	39%	2.9 yr
Commercial Corridor	1,048	302	₦1.91bn	₦1.91bn	39%	2.9 yr
Apartment	147	0	₦2.28m	₦2.28m	23%	4.6 yr
Institutional	92	50	₦3.24bn	₦3.22bn	41%	2.6 yr
Duplex	72	0	₦2.62m	₦2.62m	31%	3.6 yr
Unknown	65	15	₦80m	₦80m	33%	3.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	127,554	9,258	₦25.3bn	₦24.1bn
Retail	236	15	₦159m	₦159m
Industrial	62	6	₦11.7m	₦11.7m
Commercial	53	38	₦22.8m	₦22.8m

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	124,871	8,263	₦10.1bn	₦9.91bn	21%	5.4 yr
SME High	2,845	955	₦7.31bn	₦7.28bn	39%	2.9 yr
Enterprise	189	99	₦8.02bn	₦7.11bn	47%	2.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	53,150	2,562	₦451m	₦451m
4.0	25,413	312	₦3.84bn	₦3.83bn
3.0	23,356	3,442	₦14.7bn	₦13.7bn
2.0	18,619	1,853	₦1.26bn	₦1.21bn
1.0	5,518	598	₦231m	₦231m
5.0	1,588	449	₦2.62bn	₦2.61bn
6.0	261	101	₦2.32bn	₦2.31bn