Enugu State

Rooftop solar in Ezeagu, Enugu: what the roofs are worth

Ezeagu has 68,469 buildings with a viable rooftop and 1.34 GWp of roof capacity. 37% run a generator, and together they spend ₦37.9bn a year on energy.

Viable buildings

68,469

Usable roof area

5.98 km²

1.34 GWp roof capacity

Energy spend

₦37.9bn/yr

34.8 GWh/yr burned on generators

Median payback

4.4 yr

Median IRR 25% (cash saved)

The savings bracket for Ezeagu

Approach B

Cash saved

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

Current energy spend₦37.9bn/yr

Year-one cash saved₦37.4bn

Lifetime cash saved₦1.91tn

NPV₦305bn

Median IRR25%

Median payback4.4 yr

Unlocked energy26.7 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity135 MWp

Capex₦141bn

Year-one energy value₦130bn

Lifetime energy value₦6.17tn

NPV₦1.04tn

Median IRR99%

Median payback1.1 yr

Three ways to size Ezeagu'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: 135 MWp
Capital cost: ₦141bn
Year 1 savings: ₦130bn/yr
NPV: ₦1.04tn
Median IRR: 99%
Median payback: 1.1 yr

The odds a rooftop in Ezeagu pays back quickly

Of the 67,783 buildings in Ezeagu with a modelled payback, 61.4% pay back inside five years and 37.3% inside three.

Create a free account

How much of Ezeagu's demand actually gets met

Buildings in Ezeagu consume 46.5 GWh/yr but want 73.3 GWh/yr. The 36% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Ezeagu

Loading band economics…

How many rooftops in Ezeagu 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 67,783 buildings with a modelled result out of 68,469 in Ezeagu. 51,010 clear a positive NPV.

Payback

Under 3 years25,312 (37%)

Under 5 years41,650 (61%)

Under 7 years50,917 (75%)

Under 10 years57,431 (85%)

Return (IRR)

Above 10%56,038 (82%)

Above 15%51,010 (75%)

Above 20%44,263 (65%)

Above 25%30,304 (44%)

CO₂ avoided

66.6 kt/yr

Fuel avoided

21.4 million litres/yr

Energy unlocked

26.7 GWh/yr

Demand that is suppressed today

People served

319k

What hardware costs right now

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

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 Ezeagu

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	28,804	9,616	₦14.5bn	₦14.4bn	25%	4.4 yr
D	28,463	12,273	₦18.8bn	₦18.5bn	25%	4.4 yr
C	11,045	3,369	₦4.48bn	₦4.41bn	25%	4.4 yr
A	102	56	₦36.8m	₦36.8m	27%	3.6 yr
B	55	48	₦83.9m	₦83.9m	59%	1.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	67,003	23,985	₦32.4bn	₦32bn	25%	4.4 yr
Commercial General	714	664	₦2.32bn	₦2.32bn	59%	1.9 yr
Anchor	458	438	₦2.63bn	₦2.59bn	77%	1.4 yr
Commercial Retail	157	147	₦23.5m	₦23.5m	59%	1.9 yr
Industrial	111	103	₦239m	₦239m	69%	1.6 yr
Worship	19	19	₦26.2m	₦26.2m	59%	1.9 yr
Filling Station	6	5	₦5.2m	₦5.2m	57%	1.6 yr
Hospitality	1	1	₦232m	₦188m	81%	1.4 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	24,140	9,350	₦18.1bn	₦18.1bn	25%	4.4 yr
50 100m2	18,251	6,271	₦3.22bn	₦3.21bn	23%	4.9 yr
Under 30m2	12,255	4,417	₦442m	₦441m	7%	13.9 yr
30 50m2	9,377	3,215	₦608m	₦608m	11%	8.6 yr
250 1000m2	4,411	2,089	₦14.5bn	₦14.2bn	25%	4.4 yr
Over 1000m2	35	20	₦961m	₦917m	63%	1.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	39,134	16,912	₦26.3bn	₦26.1bn	25%	4.4 yr
Dense Urban	22,903	5,652	₦4.64bn	₦4.64bn	19%	5.4 yr
Unclassified	4,701	1,357	₦4.88bn	₦4.53bn	25%	4.4 yr
Rural	1,731	1,441	₦2.1bn	₦2.1bn	71%	1.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	27,538	9,763	₦4.79bn	₦4.77bn	23%	4.9 yr
Residential	21,830	8,727	₦27bn	₦26.6bn	25%	4.4 yr
Shed	15,622	5,265	₦510m	₦510m	9%	12.9 yr
Residential Formal	1,992	226	₦125m	₦125m	21%	5.1 yr
Institutional	319	304	₦1.61bn	₦1.61bn	57%	1.9 yr
Commercial	302	290	₦801m	₦801m	63%	1.6 yr
Educational Facility	175	168	₦725m	₦725m	83%	1.4 yr
Kiosk Shop	157	147	₦23.5m	₦23.5m	59%	1.9 yr
School	107	103	₦214m	₦214m	81%	1.4 yr
Industrial Site	80	74	₦181m	₦181m	69%	1.6 yr
Healthcare Facility	72	69	₦890m	₦853m	53%	2.1 yr
Unknown	58	40	₦81.7m	₦81.7m	49%	2.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	68,468	25,361	₦37.9bn	₦37.4bn
Farmyard	1	1	₦4.2m	₦4.2m

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	67,548	24,486	₦33.9bn	₦33.5bn	25%	4.4 yr
Enterprise	569	541	₦2.86bn	₦2.83bn	73%	1.4 yr
SME High	352	335	₦1.1bn	₦1.05bn	61%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	25,473	9,385	₦7.26bn	₦7.24bn
3.0	21,592	8,813	₦28.7bn	₦28.3bn
0.0	15,633	5,271	₦511m	₦511m
1.0	4,121	1,624	₦568m	₦555m
4.0	1,638	265	₦549m	₦549m
5.0	12	4	₦295m	₦251m