Enugu State

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

Enugu North has 72,238 buildings with a viable rooftop and 1.82 GWp of roof capacity. 13% run a generator, and together they spend ₦27.4bn a year on energy.

Viable buildings

72,238

Usable roof area

8.07 km²

1.82 GWp roof capacity

Energy spend

₦27.4bn/yr

7.62 GWh/yr burned on generators

Median payback

4.4 yr

Median IRR 25% (cash saved)

The savings bracket for Enugu North

Approach B

Cash saved

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

Current energy spend₦27.4bn/yr

Year-one cash saved₦27.3bn

Lifetime cash saved₦1.78tn

NPV₦219bn

Median IRR25%

Median payback4.4 yr

Unlocked energy71 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity273 MWp

Capex₦242bn

Year-one energy value₦130bn

Lifetime energy value₦5.99tn

NPV₦917bn

Median IRR57%

Median payback1.9 yr

Three ways to size Enugu 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: 273 MWp
Capital cost: ₦242bn
Year 1 savings: ₦130bn/yr
NPV: ₦917bn
Median IRR: 57%
Median payback: 1.9 yr

The odds a rooftop in Enugu North pays back quickly

Of the 69,844 buildings in Enugu North with a modelled payback, 59.0% pay back inside five years and 8.4% inside three.

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How much of Enugu North's demand actually gets met

Buildings in Enugu North consume 108 GWh/yr but want 179 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 Enugu North

Loading band economics…

How many rooftops in Enugu 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 69,844 buildings with a modelled result out of 72,238 in Enugu North. 53,426 clear a positive NPV.

Payback

Under 3 years5,877 (8%)

Under 5 years41,208 (59%)

Under 7 years53,338 (76%)

Under 10 years61,745 (88%)

Return (IRR)

Above 10%60,700 (84%)

Above 15%53,426 (74%)

Above 20%44,601 (62%)

Above 25%35,118 (49%)

CO₂ avoided

82 kt/yr

Fuel avoided

3.51 million litres/yr

Energy unlocked

71 GWh/yr

Demand that is suppressed today

People served

141k

What hardware costs right now

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

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
A	64,687	5,424	₦22.3bn	₦22.3bn	23%	4.6 yr
B	7,454	3,968	₦5.06bn	₦4.94bn	33%	3.1 yr
C	97	47	₦72.3m	₦72.3m	27%	3.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	62,222	8,102	₦6.71bn	₦6.7bn	21%	4.9 yr
Commercial General	5,087	698	₦10.7bn	₦10.7bn	35%	3.1 yr
Commercial Retail	2,351	403	₦198m	₦198m	33%	3.4 yr
Anchor	1,385	114	₦6.59bn	₦6.58bn	31%	3.6 yr
Hospitality	522	47	₦1.56bn	₦1.56bn	33%	3.1 yr
Worship	320	31	₦114m	₦114m	33%	3.1 yr
Industrial	158	29	₦1.29bn	₦1.18bn	37%	2.9 yr
Mall Retail	70	4	₦190m	₦190m	33%	3.1 yr
Filling Station	52	5	₦32.8m	₦32.7m	33%	3.1 yr
Productive Use	51	5	₦35.1m	₦35.1m	33%	3.1 yr
Automotive	20	1	₦8.51m	₦8.51m	31%	3.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	18,751	2,234	₦360m	₦357m	11%	7.6 yr
100 250m2	17,201	2,471	₦4.5bn	₦4.49bn	25%	4.4 yr
50 100m2	14,003	1,779	₦877m	₦877m	21%	4.9 yr
30 50m2	11,106	1,386	₦354m	₦352m	17%	6.1 yr
250 1000m2	10,767	1,500	₦12.5bn	₦12.5bn	27%	4.1 yr
Over 1000m2	410	69	₦8.86bn	₦8.73bn	29%	3.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	69,682	9,135	₦25bn	₦24.9bn	25%	4.4 yr
Unclassified	2,216	267	₦2.36bn	₦2.35bn	25%	4.4 yr
Urban	340	37	₦51.8m	₦51.8m	11%	8.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Informal	50,705	4,467	₦3.28bn	₦3.28bn	21%	5.1 yr
Residential Small	4,199	1,184	₦324m	₦320m	23%	4.9 yr
Shed	3,570	1,017	₦107m	₦107m	19%	5.4 yr
Residential	2,927	1,249	₦2.91bn	₦2.91bn	27%	4.1 yr
Kiosk Shop	2,364	405	₦200m	₦200m	33%	3.4 yr
Commercial Corridor	1,666	248	₦4.16bn	₦4.15bn	35%	3.1 yr
Unknown	1,198	140	₦2.13bn	₦2.13bn	31%	3.6 yr
Commercial	1,181	208	₦2.06bn	₦2.06bn	35%	3.1 yr
Residential Formal	811	183	₦93.2m	₦90.4m	25%	4.4 yr
Institutional	664	54	₦4.39bn	₦4.38bn	31%	3.6 yr
Commercial	384	35	₦1.46bn	₦1.46bn	35%	3.1 yr
School	265	34	₦352m	₦352m	41%	2.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	72,196	9,439	₦27.4bn	₦27.3bn
Commercial	36	0	₦2.06m	₦2.06m
Industrial	6	0	₦615k	₦615k

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	67,436	8,799	₦12.3bn	₦12.3bn	23%	4.6 yr
SME High	3,347	503	₦7.45bn	₦7.44bn	35%	3.1 yr
Enterprise	1,455	137	₦7.65bn	₦7.53bn	33%	3.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	33,013	3,690	₦1.29bn	₦1.28bn
3.0	17,633	2,553	₦6.14bn	₦6.14bn
1.0	11,696	1,307	₦142m	₦142m
4.0	4,825	806	₦14bn	₦13.9bn
0.0	3,487	1,011	₦102m	₦102m
5.0	1,098	60	₦2.79bn	₦2.79bn
6.0	486	12	₦2.94bn	₦2.92bn