Ebonyi State

Rooftop solar in Ezza North, Ebonyi: what the roofs are worth

Ezza North has 42,194 buildings with a viable rooftop and 685 MWp of roof capacity. 18% run a generator, and together they spend ₦15.5bn a year on energy.

Viable buildings

42,194

Usable roof area

3.06 km²

685 MWp roof capacity

Energy spend

₦15.5bn/yr

13.4 GWh/yr burned on generators

Median payback

4.4 yr

Median IRR 25% (cash saved)

The savings bracket for Ezza North

Approach B

Cash saved

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

Current energy spend₦15.5bn/yr

Year-one cash saved₦15.3bn

Lifetime cash saved₦837bn

NPV₦125bn

Median IRR25%

Median payback4.4 yr

Unlocked energy19.9 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity119 MWp

Capex₦118bn

Year-one energy value₦105bn

Lifetime energy value₦4.96tn

NPV₦838bn

Median IRR101%

Median payback1.1 yr

Three ways to size Ezza 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: 119 MWp
Capital cost: ₦118bn
Year 1 savings: ₦105bn/yr
NPV: ₦838bn
Median IRR: 101%
Median payback: 1.1 yr

The odds a rooftop in Ezza North pays back quickly

Of the 41,793 buildings in Ezza North with a modelled payback, 57.9% pay back inside five years and 16.9% inside three.

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How much of Ezza North's demand actually gets met

Buildings in Ezza North consume 29.8 GWh/yr but want 49.7 GWh/yr. The 40% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Ezza North

Loading band economics…

How many rooftops in Ezza 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 41,793 buildings with a modelled result out of 42,194 in Ezza North. 29,116 clear a positive NPV.

Payback

Under 3 years7,071 (17%)

Under 5 years24,207 (58%)

Under 7 years29,079 (70%)

Under 10 years32,711 (78%)

Return (IRR)

Above 10%31,704 (75%)

Above 15%29,116 (69%)

Above 20%25,643 (61%)

Above 25%20,926 (50%)

CO₂ avoided

31.8 kt/yr

Fuel avoided

6.71 million litres/yr

Energy unlocked

19.9 GWh/yr

Demand that is suppressed today

People served

279k

What hardware costs right now

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

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
D	16,415	2,795	₦5.56bn	₦5.46bn	25%	4.4 yr
E	13,835	1,821	₦4.75bn	₦4.74bn	25%	4.6 yr
C	6,042	1,398	₦3.05bn	₦3.05bn	23%	4.6 yr
B	4,707	937	₦1.32bn	₦1.32bn	23%	4.4 yr
A	1,195	461	₦774m	₦774m	33%	3.1 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	39,058	5,611	₦9.09bn	₦8.99bn	23%	4.6 yr
Commercial General	1,655	858	₦2.77bn	₦2.77bn	35%	3.1 yr
Commercial Retail	691	261	₦53.7m	₦53.7m	33%	3.4 yr
Anchor	340	315	₦2.9bn	₦2.9bn	63%	1.6 yr
Industrial	338	278	₦533m	₦531m	67%	1.6 yr
Worship	93	80	₦80.9m	₦80.9m	61%	1.9 yr
Filling Station	13	6	₦6.15m	₦6.15m	35%	3.1 yr
Hospitality	5	3	₦19m	₦19m	35%	2.9 yr
Productive Use	1	0	₦81k	₦81k	33%	3.4 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
50 100m2	13,713	2,029	₦1.96bn	₦1.87bn	25%	4.4 yr
100 250m2	11,761	2,316	₦5.56bn	₦5.55bn	25%	4.4 yr
Under 30m2	8,688	1,403	₦169m	₦167m	7%	14.9 yr
30 50m2	6,314	929	₦258m	₦258m	9%	9.6 yr
250 1000m2	1,666	707	₦5.27bn	₦5.26bn	35%	3.1 yr
Over 1000m2	52	28	₦2.24bn	₦2.24bn	37%	2.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	26,977	4,866	₦10.7bn	₦10.6bn	25%	4.4 yr
Urban Centre	9,261	2,061	₦3.03bn	₦3.03bn	21%	5.1 yr
Unclassified	5,877	485	₦1.67bn	₦1.66bn	25%	4.4 yr
Rural	79	0	₦10m	₦10m	25%	4.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	18,114	2,568	₦2.13bn	₦2.04bn	25%	4.4 yr
Shed	10,799	1,208	₦106m	₦106m	7%	14.1 yr
Residential	10,017	1,811	₦6.84bn	₦6.84bn	25%	4.4 yr
Commercial	848	313	₦1.34bn	₦1.34bn	35%	3.1 yr
Kiosk Shop	692	261	₦53.8m	₦53.8m	33%	3.4 yr
Institutional	496	425	₦2.47bn	₦2.47bn	55%	1.9 yr
Industrial Site	318	268	₦525m	₦523m	67%	1.6 yr
Commercial Corridor	300	106	₦450m	₦450m	35%	3.1 yr
Educational Facility	145	140	₦303m	₦303m	79%	1.4 yr
Agricultural	128	24	₦5.76m	₦5.76m	19%	5.6 yr
School	70	63	₦192m	₦192m	75%	1.4 yr
Market	58	52	₦43.7m	₦43.7m	61%	1.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	42,194	7,412	₦15.5bn	₦15.3bn

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	40,355	6,394	₦10.2bn	₦10.1bn	25%	4.6 yr
SME High	1,162	426	₦1.79bn	₦1.79bn	35%	3.1 yr
Enterprise	677	592	₦3.44bn	₦3.43bn	67%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	18,150	3,143	₦4.64bn	₦4.63bn
0.0	10,939	1,240	₦113m	₦113m
1.0	6,948	1,049	₦768m	₦686m
3.0	5,345	1,721	₦8.29bn	₦8.28bn
5.0	424	98	₦555m	₦555m
4.0	308	141	₦554m	₦554m
6.0	80	20	₦533m	₦533m