Niger State

Rooftop solar in Edati, Niger: what the roofs are worth

Edati has 34,671 buildings with a viable rooftop and 342 MWp of roof capacity. 14% run a generator, and together they spend ₦25.8bn a year on energy.

Viable buildings

34,671

Usable roof area

1.54 km²

342 MWp roof capacity

Energy spend

₦25.8bn/yr

21.5 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 23% (cash saved)

The savings bracket for Edati

Approach B

Cash saved

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

Current energy spend₦25.8bn/yr

Year-one cash saved₦22.1bn

Lifetime cash saved₦1.11tn

NPV₦179bn

Median IRR23%

Median payback4.6 yr

Unlocked energy15.2 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₦108bn

Year-one energy value₦115bn

Lifetime energy value₦5.33tn

NPV₦927bn

Median IRR107%

Median payback0.9 yr

Three ways to size Edati'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: ₦108bn
Year 1 savings: ₦115bn/yr
NPV: ₦927bn
Median IRR: 107%
Median payback: 0.9 yr

The odds a rooftop in Edati pays back quickly

Of the 34,515 buildings in Edati with a modelled payback, 51.1% pay back inside five years and 14.3% inside three.

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How much of Edati's demand actually gets met

Buildings in Edati consume 35.3 GWh/yr but want 50.6 GWh/yr. The 30% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Edati

Loading band economics…

How many rooftops in Edati 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 34,515 buildings with a modelled result out of 34,671 in Edati. 19,218 clear a positive NPV.

Payback

Under 3 years4,921 (14%)

Under 5 years17,651 (51%)

Under 7 years19,219 (56%)

Under 10 years24,669 (71%)

Return (IRR)

Above 10%22,515 (65%)

Above 15%19,218 (55%)

Above 20%18,166 (52%)

Above 25%16,460 (47%)

CO₂ avoided

40.4 kt/yr

Fuel avoided

12.2 million litres/yr

Energy unlocked

15.2 GWh/yr

Demand that is suppressed today

People served

382k

What hardware costs right now

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

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 Edati

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	21,520	2,954	₦17.1bn	₦14.1bn	23%	4.9 yr
D	11,310	1,671	₦6.88bn	₦6.18bn	23%	4.6 yr
C	1,841	292	₦1.84bn	₦1.84bn	23%	4.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	33,543	3,835	₦24.1bn	₦20.5bn	21%	5.1 yr
Worship	505	496	₦227m	₦227m	63%	1.6 yr
Anchor	309	293	₦1.02bn	₦985m	79%	1.4 yr
Commercial General	206	193	₦411m	₦411m	61%	1.6 yr
Commercial Retail	102	94	₦15.9m	₦15.9m	63%	1.6 yr
Industrial	6	6	₦8.16m	₦8.16m	55%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	10,205	1,092	₦261m	₦259m	7%	14.6 yr
50 100m2	9,759	1,407	₦5.49bn	₦5.33bn	27%	3.9 yr
30 50m2	9,726	1,164	₦1.32bn	₦1.11bn	11%	9.1 yr
100 250m2	4,661	1,111	₦13.7bn	₦11.1bn	27%	3.9 yr
250 1000m2	317	141	₦4.6bn	₦3.99bn	29%	3.9 yr
Over 1000m2	3	2	₦426m	₦360m	61%	1.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Unclassified	21,527	3,268	₦17.7bn	₦14.9bn	25%	4.4 yr
Rural	10,887	1,104	₦4.76bn	₦3.92bn	21%	5.1 yr
Urban	2,257	545	₦3.33bn	₦3.33bn	25%	4.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	16,174	1,435	₦194m	₦194m	9%	13.4 yr
Residential Small	12,318	1,642	₦7.48bn	₦7.07bn	27%	3.9 yr
Residential	4,124	758	₦16.4bn	₦13.1bn	27%	3.9 yr
Residential Informal	927	0	₦63.1m	₦63.1m	25%	4.4 yr
Institutional	324	314	₦534m	₦534m	59%	1.9 yr
Worship Center	170	167	₦64.9m	₦64.9m	65%	1.6 yr
Place Of Worship	166	163	₦37.1m	₦37.1m	65%	1.6 yr
Educational Facility	117	113	₦214m	₦214m	87%	1.1 yr
Kiosk Shop	102	94	₦15.9m	₦15.9m	63%	1.6 yr
Healthcare Facility	74	69	₦516m	₦486m	53%	1.9 yr
School	71	67	₦77m	₦77m	85%	1.1 yr
Clinic	44	41	₦168m	₦167m	53%	1.9 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	34,671	4,917	₦25.8bn	₦22.1bn

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	34,314	4,578	₦24.8bn	₦21.1bn	23%	4.9 yr
Enterprise	315	299	₦1.02bn	₦993m	79%	1.4 yr
SME High	42	40	₦37.1m	₦37.1m	65%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	16,184	1,454	₦195m	₦195m
2.0	8,839	1,544	₦8.45bn	₦7.5bn
3.0	5,435	1,095	₦15.3bn	₦12.8bn
1.0	3,907	816	₦1.75bn	₦1.55bn
4.0	299	3	₦57.6m	₦57.6m
5.0	7	5	₦11.1m	₦11.1m