Niger State

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

Bosso has 129,062 buildings with a viable rooftop and 1.49 GWp of roof capacity. 8% run a generator, and together they spend ₦18.4bn a year on energy.

Viable buildings

129,062

Usable roof area

6.68 km²

1.49 GWp roof capacity

Energy spend

₦18.4bn/yr

17.3 GWh/yr burned on generators

Median payback

6.9 yr

Median IRR 13% (cash saved)

The savings bracket for Bosso

Approach B

Cash saved

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

Current energy spend₦18.4bn/yr

Year-one cash saved₦18.4bn

Lifetime cash saved₦988bn

NPV₦144bn

Median IRR13%

Median payback6.9 yr

Unlocked energy16.9 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity92.8 MWp

Capex₦96bn

Year-one energy value₦80.8bn

Lifetime energy value₦3.83tn

NPV₦641bn

Median IRR91%

Median payback1.1 yr

Three ways to size Bosso'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: 92.8 MWp
Capital cost: ₦96bn
Year 1 savings: ₦80.8bn/yr
NPV: ₦641bn
Median IRR: 91%
Median payback: 1.1 yr

The odds a rooftop in Bosso pays back quickly

Of the 123,615 buildings in Bosso with a modelled payback, 34.0% pay back inside five years and 8.1% inside three.

Create a free account

How much of Bosso's demand actually gets met

Buildings in Bosso consume 37 GWh/yr but want 53.8 GWh/yr. The 31% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Bosso

Loading band economics…

How many rooftops in Bosso 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 123,615 buildings with a modelled result out of 129,062 in Bosso. 62,322 clear a positive NPV.

Payback

Under 3 years9,989 (8%)

Under 5 years42,053 (34%)

Under 7 years62,337 (50%)

Under 10 years76,328 (62%)

Return (IRR)

Above 10%72,818 (56%)

Above 15%62,322 (48%)

Above 20%47,507 (37%)

Above 25%32,923 (26%)

CO₂ avoided

34.4 kt/yr

Fuel avoided

7.58 million litres/yr

Energy unlocked

16.9 GWh/yr

Demand that is suppressed today

People served

218k

What hardware costs right now

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

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 Bosso

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	41,953	1,246	₦3.13bn	₦3.12bn	7%	14.6 yr
B	35,190	3,002	₦5.53bn	₦5.53bn	19%	5.4 yr
D	26,113	1,067	₦1.34bn	₦1.34bn	9%	12.9 yr
C	25,310	4,622	₦8.19bn	₦8.19bn	21%	4.9 yr
A	496	62	₦228m	₦228m	27%	3.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	127,025	8,784	₦9.21bn	₦9.21bn	13%	7.1 yr
Commercial General	707	404	₦2.13bn	₦2.13bn	43%	2.4 yr
Anchor	555	362	₦5.48bn	₦5.48bn	53%	2.1 yr
Commercial Retail	344	234	₦60.5m	₦60.5m	57%	1.9 yr
Worship	341	164	₦135m	₦135m	35%	3.1 yr
Industrial	69	39	₦1.24bn	₦1.24bn	49%	2.1 yr
Hospitality	15	8	₦161m	₦161m	55%	1.9 yr
Filling Station	5	3	₦4.5m	₦4.5m	49%	2.1 yr
Mall Retail	1	1	₦1.55m	₦1.55m	41%	2.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	52,980	2,255	₦342m	₦342m	5%	16.9 yr
50 100m2	28,931	2,144	₦1.29bn	₦1.29bn	21%	4.9 yr
100 250m2	21,919	3,116	₦4.18bn	₦4.18bn	27%	3.9 yr
30 50m2	21,797	1,342	₦399m	₦399m	11%	8.9 yr
250 1000m2	3,295	1,063	₦5.39bn	₦5.39bn	29%	3.9 yr
Over 1000m2	140	79	₦6.81bn	₦6.81bn	55%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Unclassified	51,393	1,583	₦3.26bn	₦3.26bn	7%	14.9 yr
Urban Centre	37,189	3,481	₦5.31bn	₦5.31bn	19%	5.4 yr
Urban	22,505	3,197	₦6.93bn	₦6.93bn	19%	5.4 yr
Rural	10,340	977	₦2.29bn	₦2.29bn	11%	9.1 yr
Dense Urban	7,635	761	₦627m	₦627m	19%	5.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	54,552	2,044	₦341m	₦341m	5%	15.6 yr
Residential Small	30,303	3,504	₦1.54bn	₦1.54bn	23%	4.6 yr
Residential Formal	24,191	175	₦290m	₦290m	15%	6.4 yr
Residential	13,108	3,061	₦6.98bn	₦6.98bn	27%	3.9 yr
Residential Informal	4,852	0	₦61.1m	₦61.1m	13%	6.4 yr
Institutional	413	252	₦3.9bn	₦3.9bn	51%	2.1 yr
Kiosk Shop	344	234	₦60.5m	₦60.5m	57%	1.9 yr
Commercial Corridor	297	150	₦1.38bn	₦1.38bn	39%	2.9 yr
Educational Facility	186	119	₦292m	₦292m	73%	1.4 yr
School	146	86	₦164m	₦164m	67%	1.6 yr
Worship Center	119	58	₦39.6m	₦39.6m	35%	3.1 yr
Place Of Worship	112	55	₦22.4m	₦22.4m	35%	3.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	128,818	9,962	₦18.3bn	₦18.3bn
Farmland	157	11	₦7.96m	₦7.96m
Industrial	63	26	₦60.2m	₦60.2m
Farmyard	23	0	₦845k	₦845k
Retail	1	0	₦19.3k	₦19.3k

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	128,152	9,447	₦10.3bn	₦10.3bn	13%	6.9 yr
Enterprise	588	384	₦6.65bn	₦6.65bn	53%	2.1 yr
SME High	322	168	₦1.49bn	₦1.49bn	41%	2.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	54,576	2,053	₦342m	₦342m
2.0	24,951	3,302	₦2.1bn	₦2.09bn
4.0	17,480	180	₦1.23bn	₦1.23bn
1.0	16,365	1,327	₦623m	₦623m
3.0	15,621	3,117	₦11.9bn	₦11.9bn
5.0	63	17	₦1.24bn	₦1.24bn
6.0	6	3	₦964m	₦964m