Anambra State

Rooftop solar in Awka North, Anambra: what the roofs are worth

Awka North has 39,587 buildings with a viable rooftop and 978 MWp of roof capacity. 51% run a generator, and together they spend ₦42.2bn a year on energy.

Viable buildings

39,587

Usable roof area

4.35 km²

978 MWp roof capacity

Energy spend

₦42.2bn/yr

40.6 GWh/yr burned on generators

Median payback

2.9 yr

Median IRR 35% (cash saved)

The savings bracket for Awka North

Approach B

Cash saved

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

Current energy spend₦42.2bn/yr

Year-one cash saved₦41.6bn

Lifetime cash saved₦2.19tn

NPV₦339bn

Median IRR35%

Median payback2.9 yr

Unlocked energy30.7 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity122 MWp

Capex₦117bn

Year-one energy value₦93.4bn

Lifetime energy value₦4.41tn

NPV₦732bn

Median IRR83%

Median payback1.4 yr

Three ways to size Awka 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: 122 MWp
Capital cost: ₦117bn
Year 1 savings: ₦93.4bn/yr
NPV: ₦732bn
Median IRR: 83%
Median payback: 1.4 yr

The odds a rooftop in Awka North pays back quickly

Of the 39,214 buildings in Awka North with a modelled payback, 75.0% pay back inside five years and 50.3% inside three.

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How much of Awka North's demand actually gets met

Buildings in Awka North consume 62.9 GWh/yr but want 93.6 GWh/yr. The 33% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Awka North

Loading band economics…

How many rooftops in Awka 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 39,214 buildings with a modelled result out of 39,587 in Awka North. 33,955 clear a positive NPV.

Payback

Under 3 years19,731 (50%)

Under 5 years29,402 (75%)

Under 7 years33,917 (86%)

Under 10 years36,583 (93%)

Return (IRR)

Above 10%36,213 (91%)

Above 15%33,955 (86%)

Above 20%30,635 (77%)

Above 25%24,572 (62%)

CO₂ avoided

73.7 kt/yr

Fuel avoided

21.3 million litres/yr

Energy unlocked

30.7 GWh/yr

Demand that is suppressed today

People served

144k

What hardware costs right now

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

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	14,911	5,497	₦12.3bn	₦12.3bn	25%	4.4 yr
B	10,468	5,297	₦8.42bn	₦8.4bn	35%	3.1 yr
D	7,643	6,084	₦12.8bn	₦12.4bn	71%	1.4 yr
E	5,775	2,869	₦6.84bn	₦6.8bn	29%	2.6 yr
A	790	464	₦1.77bn	₦1.77bn	39%	2.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	36,275	18,191	₦28.1bn	₦27.6bn	27%	3.6 yr
Commercial General	1,617	996	₦7.62bn	₦7.62bn	49%	2.1 yr
Commercial Retail	969	412	₦156m	₦156m	33%	3.4 yr
Anchor	299	244	₦4.22bn	₦4.14bn	55%	1.9 yr
Industrial	278	245	₦1.52bn	₦1.51bn	67%	1.6 yr
Worship	127	106	₦205m	₦205m	55%	1.9 yr
Hospitality	13	8	₦367m	₦367m	55%	1.9 yr
Filling Station	6	6	₦14.8m	₦14.8m	57%	1.9 yr
Mall Retail	3	3	₦19.6m	₦19.6m	69%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	13,994	7,256	₦16.5bn	₦16.3bn	47%	2.4 yr
50 100m2	8,314	4,302	₦2.52bn	₦2.43bn	45%	2.4 yr
Under 30m2	7,007	3,382	₦492m	₦487m	29%	3.4 yr
30 50m2	5,120	2,489	₦639m	₦638m	33%	3.4 yr
250 1000m2	5,043	2,698	₦17.6bn	₦17.4bn	49%	2.1 yr
Over 1000m2	109	84	₦4.39bn	₦4.39bn	55%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Dense Urban	12,957	5,823	₦7.68bn	₦7.64bn	25%	4.4 yr
Urban Centre	12,684	5,654	₦9.31bn	₦9.3bn	25%	4.4 yr
Urban	10,079	6,749	₦18.9bn	₦18.9bn	61%	1.6 yr
Unclassified	3,234	1,383	₦5.1bn	₦4.62bn	25%	4.4 yr
Rural	633	602	₦1.19bn	₦1.19bn	73%	1.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	11,663	7,232	₦24bn	₦23.5bn	59%	1.9 yr
Residential Small	10,957	6,992	₦3.36bn	₦3.28bn	57%	1.9 yr
Residential Formal	6,208	722	₦317m	₦317m	21%	5.4 yr
Shed	5,564	3,008	₦318m	₦318m	47%	2.4 yr
Commercial	1,049	593	₦4.91bn	₦4.91bn	45%	2.4 yr
Kiosk Shop	968	411	₦156m	₦156m	33%	3.4 yr
Residential Informal	746	51	₦58.5m	₦58.5m	25%	4.4 yr
Apartment	696	84	₦35m	₦35m	25%	4.4 yr
Institutional	389	335	₦3.1bn	₦3.1bn	55%	1.9 yr
Duplex	334	22	₦12.9m	₦12.9m	25%	4.4 yr
Industrial Site	221	196	₦1.25bn	₦1.25bn	69%	1.6 yr
Commercial Corridor	159	77	₦874m	₦874m	35%	3.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	39,587	20,211	₦42.2bn	₦41.6bn

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	37,795	19,042	₦30.7bn	₦30.1bn	33%	3.4 yr
SME High	1,225	683	₦5.85bn	₦5.85bn	45%	2.4 yr
Enterprise	567	486	₦5.72bn	₦5.64bn	63%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	19,756	12,148	₦34.1bn	₦33.5bn
4.0	7,610	1,111	₦3.62bn	₦3.62bn
0.0	5,651	3,082	₦353m	₦353m
2.0	4,992	3,039	₦1.57bn	₦1.53bn
1.0	1,269	683	₦197m	₦197m
5.0	213	99	₦1.05bn	₦1.05bn
6.0	96	49	₦1.35bn	₦1.35bn