Delta State

Rooftop solar in Uvwie, Delta: what the roofs are worth

Uvwie has 67,308 buildings with a viable rooftop and 2.3 GWp of roof capacity. 28% run a generator, and together they spend ₦37.4bn a year on energy.

Viable buildings

67,308

Usable roof area

10.2 km²

2.3 GWp roof capacity

Energy spend

₦37.4bn/yr

20.7 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 25% (cash saved)

The savings bracket for Uvwie

Approach B

Cash saved

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

Current energy spend₦37.4bn/yr

Year-one cash saved₦37.1bn

Lifetime cash saved₦2.18tn

NPV₦275bn

Median IRR25%

Median payback4.6 yr

Unlocked energy59.9 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity220 MWp

Capex₦202bn

Year-one energy value₦104bn

Lifetime energy value₦4.77tn

NPV₦721bn

Median IRR55%

Median payback1.9 yr

Three ways to size Uvwie'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: 220 MWp
Capital cost: ₦202bn
Year 1 savings: ₦104bn/yr
NPV: ₦721bn
Median IRR: 55%
Median payback: 1.9 yr

The odds a rooftop in Uvwie pays back quickly

Of the 66,639 buildings in Uvwie with a modelled payback, 71.7% pay back inside five years and 15.0% inside three.

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How much of Uvwie's demand actually gets met

Buildings in Uvwie consume 113 GWh/yr but want 173 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 Uvwie

Loading band economics…

How many rooftops in Uvwie 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 66,639 buildings with a modelled result out of 67,308 in Uvwie. 57,959 clear a positive NPV.

Payback

Under 3 years10,022 (15%)

Under 5 years47,765 (72%)

Under 7 years57,824 (87%)

Under 10 years63,084 (95%)

Return (IRR)

Above 10%62,567 (93%)

Above 15%57,959 (86%)

Above 20%50,942 (76%)

Above 25%21,077 (31%)

CO₂ avoided

89.2 kt/yr

Fuel avoided

10 million litres/yr

Energy unlocked

59.9 GWh/yr

Demand that is suppressed today

People served

155k

What hardware costs right now

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

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 Uvwie

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
A	46,856	11,695	₦24.6bn	₦24.4bn	25%	4.6 yr
B	19,449	6,432	₦11.4bn	₦11.4bn	25%	4.6 yr
C	994	523	₦1.23bn	₦1.23bn	49%	2.1 yr
D	6	2	₦112m	₦94.8m	3%	0.9 yr
E	3	0	₦3.18k	₦3.18k	-1%	18.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	61,937	16,798	₦16.5bn	₦16.4bn	25%	4.6 yr
Commercial General	2,093	798	₦8.88bn	₦8.77bn	35%	3.1 yr
Commercial Retail	1,053	486	₦626m	₦623m	33%	3.4 yr
Worship	974	234	₦1.01bn	₦1.01bn	33%	3.4 yr
Anchor	882	232	₦8.37bn	₦8.27bn	41%	2.6 yr
Hospitality	191	53	₦1.26bn	₦1.22bn	33%	3.1 yr
Filling Station	58	19	₦62.6m	₦62.6m	33%	3.1 yr
Mall Retail	48	11	₦467m	₦457m	33%	3.1 yr
Industrial	47	13	₦217m	₦216m	37%	2.9 yr
Productive Use	21	6	₦38.9m	₦38.9m	33%	3.1 yr
Automotive	4	2	₦5.44m	₦5.44m	29%	3.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
250 1000m2	19,599	5,152	₦20bn	₦19.9bn	25%	4.4 yr
100 250m2	17,622	4,938	₦5.8bn	₦5.78bn	25%	4.6 yr
50 100m2	11,419	3,140	₦1.13bn	₦1.1bn	23%	4.9 yr
Under 30m2	10,683	3,100	₦310m	₦309m	15%	6.6 yr
30 50m2	7,616	2,192	₦375m	₦373m	19%	5.6 yr
Over 1000m2	369	130	₦9.8bn	₦9.64bn	31%	3.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	63,749	17,596	₦33.9bn	₦33.7bn	25%	4.6 yr
Unclassified	2,686	721	₦3.03bn	₦2.95bn	25%	4.6 yr
Urban	873	335	₦458m	₦458m	25%	4.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Formal	24,497	4,226	₦2.15bn	₦2.15bn	25%	4.6 yr
Residential Informal	24,289	5,869	₦4.85bn	₦4.84bn	25%	4.6 yr
Residential	5,088	2,950	₦8.6bn	₦8.56bn	35%	3.1 yr
Residential Small	4,147	2,117	₦681m	₦648m	25%	4.1 yr
Shed	3,916	1,636	₦191m	₦191m	23%	4.6 yr
Commercial Corridor	1,095	438	₦4.4bn	₦4.39bn	35%	3.1 yr
Kiosk Shop	862	374	₦147m	₦147m	33%	3.4 yr
Institutional	625	176	₦7.85bn	₦7.76bn	31%	3.6 yr
Place Of Worship	472	110	₦243m	₦243m	33%	3.4 yr
School	311	79	₦386m	₦386m	41%	2.6 yr
Worship Center	299	70	₦161m	₦161m	33%	3.4 yr
Educational Facility	279	73	₦490m	₦490m	41%	2.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	65,910	18,204	₦34.7bn	₦34.4bn
Industrial	1,149	280	₦1.71bn	₦1.71bn
Retail	249	168	₦998m	₦995m

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	64,689	17,669	₦21.4bn	₦21.2bn	25%	4.6 yr
SME High	1,727	747	₦7.63bn	₦7.55bn	35%	3.1 yr
Enterprise	892	236	₦8.4bn	₦8.3bn	41%	2.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
4.0	25,089	4,594	₦13.9bn	₦13.8bn
3.0	18,863	5,801	₦15.6bn	₦15.5bn
2.0	16,016	5,293	₦1.66bn	₦1.62bn
0.0	3,446	1,606	₦181m	₦181m
1.0	3,006	1,043	₦114m	₦114m
5.0	638	222	₦2.89bn	₦2.88bn
6.0	250	93	₦3.08bn	₦3.02bn