Enugu State

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

Awgu has 56,326 buildings with a viable rooftop and 1.05 GWp of roof capacity. 17% run a generator, and together they spend ₦14.8bn a year on energy.

Viable buildings

56,326

Usable roof area

4.67 km²

1.05 GWp roof capacity

Energy spend

₦14.8bn/yr

13 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 23% (cash saved)

The savings bracket for Awgu

Approach B

Cash saved

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

Current energy spend₦14.8bn/yr

Year-one cash saved₦14.8bn

Lifetime cash saved₦788bn

NPV₦120bn

Median IRR23%

Median payback4.6 yr

Unlocked energy17.1 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity102 MWp

Capex₦105bn

Year-one energy value₦93.8bn

Lifetime energy value₦4.46tn

NPV₦752bn

Median IRR99%

Median payback1.1 yr

Three ways to size Awgu'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: 102 MWp
Capital cost: ₦105bn
Year 1 savings: ₦93.8bn/yr
NPV: ₦752bn
Median IRR: 99%
Median payback: 1.1 yr

The odds a rooftop in Awgu pays back quickly

Of the 55,991 buildings in Awgu with a modelled payback, 54.1% pay back inside five years and 16.5% inside three.

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How much of Awgu's demand actually gets met

Buildings in Awgu consume 24.6 GWh/yr but want 41.7 GWh/yr. The 41% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Awgu

Loading band economics…

How many rooftops in Awgu 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 55,991 buildings with a modelled result out of 56,326 in Awgu. 41,553 clear a positive NPV.

Payback

Under 3 years9,218 (16%)

Under 5 years30,286 (54%)

Under 7 years41,469 (74%)

Under 10 years46,545 (83%)

Return (IRR)

Above 10%45,606 (81%)

Above 15%41,553 (74%)

Above 20%33,708 (60%)

Above 25%22,105 (39%)

CO₂ avoided

29.7 kt/yr

Fuel avoided

7.29 million litres/yr

Energy unlocked

17.1 GWh/yr

Demand that is suppressed today

People served

291k

What hardware costs right now

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

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 Awgu

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	23,399	3,686	₦5.09bn	₦5.09bn	23%	4.6 yr
D	14,868	2,672	₦5.23bn	₦5.23bn	23%	4.9 yr
E	14,698	2,876	₦4.15bn	₦4.12bn	23%	4.6 yr
B	3,361	280	₦365m	₦365m	25%	4.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	54,282	7,975	₦11.1bn	₦11.1bn	23%	4.9 yr
Commercial General	1,073	792	₦1.93bn	₦1.93bn	55%	1.9 yr
Anchor	415	361	₦1.49bn	₦1.49bn	65%	1.6 yr
Commercial Retail	399	269	₦48.6m	₦48.6m	35%	3.1 yr
Industrial	143	107	₦215m	₦215m	61%	1.6 yr
Filling Station	9	5	₦5.01m	₦5.01m	53%	1.9 yr
Mall Retail	2	2	₦3.98m	₦3.98m	47%	2.1 yr
Worship	2	2	₦248k	₦248k	61%	1.6 yr
Hospitality	1	1	₦9.43m	₦9.43m	49%	2.1 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	18,758	3,461	₦6.51bn	₦6.49bn	25%	4.4 yr
50 100m2	15,235	2,233	₦1.28bn	₦1.28bn	21%	5.1 yr
Under 30m2	10,702	1,574	₦175m	₦175m	7%	14.4 yr
30 50m2	8,400	1,287	₦282m	₦282m	13%	7.9 yr
250 1000m2	3,193	938	₦6.03bn	₦6.02bn	25%	4.4 yr
Over 1000m2	38	21	₦555m	₦555m	51%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Dense Urban	26,644	4,584	₦6.26bn	₦6.26bn	23%	4.9 yr
Urban	24,208	4,136	₦6.64bn	₦6.62bn	23%	4.6 yr
Unclassified	3,994	664	₦1.7bn	₦1.7bn	23%	4.6 yr
Rural	1,480	130	₦220m	₦220m	23%	4.6 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	19,710	3,239	₦1.61bn	₦1.61bn	21%	5.1 yr
Residential	16,874	3,143	₦9.24bn	₦9.22bn	25%	4.4 yr
Shed	12,305	1,452	₦144m	₦144m	7%	13.9 yr
Residential Formal	4,758	0	₦99.6m	₦99.6m	19%	5.6 yr
Residential Informal	588	131	₦28.1m	₦28.1m	25%	4.4 yr
Commercial	585	369	₦827m	₦827m	35%	3.1 yr
Kiosk Shop	399	269	₦48.6m	₦48.6m	35%	3.1 yr
Institutional	293	245	₦911m	₦911m	55%	1.9 yr
Educational Facility	175	153	₦441m	₦441m	79%	1.4 yr
Commercial Corridor	166	158	₦355m	₦355m	63%	1.6 yr
School	117	99	₦142m	₦142m	77%	1.4 yr
Industrial Site	108	80	₦176m	₦176m	63%	1.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	56,326	9,514	₦14.8bn	₦14.8bn

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	55,012	8,518	₦11.9bn	₦11.9bn	23%	4.9 yr
SME High	762	534	₦1.19bn	₦1.19bn	57%	1.9 yr
Enterprise	552	462	₦1.69bn	₦1.69bn	63%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	19,649	3,411	₦2.95bn	₦2.93bn
3.0	13,936	3,261	₦10.5bn	₦10.5bn
0.0	12,341	1,465	₦146m	₦146m
1.0	6,084	1,097	₦321m	₦321m
4.0	4,048	160	₦741m	₦741m
5.0	249	116	₦121m	₦121m
6.0	19	4	₦37.6m	₦37.6m