Benue State

Rooftop solar in Logo, Benue: what the roofs are worth

Logo has 184,016 buildings with a viable rooftop and 911 MWp of roof capacity. 3% run a generator, and together they spend ₦9.22bn a year on energy.

Viable buildings

184,016

Usable roof area

4.2 km²

911 MWp roof capacity

Energy spend

₦9.22bn/yr

9.02 GWh/yr burned on generators

Median payback

17.4 yr

Median IRR 5% (cash saved)

The savings bracket for Logo

Approach B

Cash saved

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

Current energy spend₦9.22bn/yr

Year-one cash saved₦9.15bn

Lifetime cash saved₦491bn

NPV₦67.9bn

Median IRR5%

Median payback17.4 yr

Unlocked energy10.7 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity81.1 MWp

Capex₦87.6bn

Year-one energy value₦81.3bn

Lifetime energy value₦3.85tn

NPV₦654bn

Median IRR91%

Median payback1.1 yr

Three ways to size Logo'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: 81.1 MWp
Capital cost: ₦87.6bn
Year 1 savings: ₦81.3bn/yr
NPV: ₦654bn
Median IRR: 91%
Median payback: 1.1 yr

The odds a rooftop in Logo pays back quickly

Of the 174,479 buildings in Logo with a modelled payback, 11.2% pay back inside five years and 2.9% inside three.

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How much of Logo's demand actually gets met

Buildings in Logo consume 17.7 GWh/yr but want 28.4 GWh/yr. The 38% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Logo

Loading band economics…

How many rooftops in Logo 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 174,479 buildings with a modelled result out of 184,016 in Logo. 25,525 clear a positive NPV.

Payback

Under 3 years5,095 (3%)

Under 5 years19,468 (11%)

Under 7 years25,517 (15%)

Under 10 years34,187 (20%)

Return (IRR)

Above 10%32,091 (17%)

Above 15%25,525 (14%)

Above 20%20,876 (11%)

Above 25%16,675 (9%)

CO₂ avoided

17.9 kt/yr

Fuel avoided

3.88 million litres/yr

Energy unlocked

10.7 GWh/yr

Demand that is suppressed today

People served

305k

What hardware costs right now

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

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 Logo

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	71,991	1,732	₦3.23bn	₦3.23bn	5%	17.6 yr
E	45,129	1,430	₦2.72bn	₦2.66bn	5%	17.6 yr
D	44,700	1,523	₦2.33bn	₦2.33bn	5%	17.6 yr
B	22,196	396	₦937m	₦937m	5%	14.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	181,535	3,762	₦4.71bn	₦4.71bn	5%	17.6 yr
Commercial Retail	834	244	₦26.8m	₦26.8m	27%	3.9 yr
Commercial General	686	369	₦1.05bn	₦1.05bn	47%	2.4 yr
Worship	526	397	₦156m	₦156m	51%	2.1 yr
Anchor	332	246	₦3.21bn	₦3.14bn	57%	1.9 yr
Industrial	103	63	₦59.1m	₦59.1m	57%	1.9 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	146,550	2,834	₦450m	₦450m	3%	18.1 yr
30 50m2	15,001	530	₦201m	₦201m	7%	14.1 yr
50 100m2	13,452	587	₦690m	₦690m	23%	4.6 yr
100 250m2	7,001	600	₦1.43bn	₦1.43bn	27%	4.1 yr
250 1000m2	1,844	458	₦3.32bn	₦3.32bn	27%	3.9 yr
Over 1000m2	168	72	₦3.13bn	₦3.06bn	29%	3.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Unclassified	92,396	2,957	₦5.72bn	₦5.65bn	5%	17.6 yr
Urban	46,706	1,329	₦1.76bn	₦1.76bn	5%	17.9 yr
Dense Urban	31,564	263	₦1.03bn	₦1.03bn	5%	15.6 yr
Rural	13,350	532	₦704m	₦704m	5%	17.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	143,287	2,151	₦362m	₦362m	5%	18.1 yr
Residential Small	19,209	648	₦767m	₦767m	19%	4.9 yr
Residential	15,062	962	₦3.57bn	₦3.57bn	15%	5.6 yr
Residential Informal	3,950	0	₦16.1m	₦16.1m	-1%	8.9 yr
Kiosk Shop	834	244	₦26.8m	₦26.8m	27%	3.9 yr
Institutional	444	337	₦3.22bn	₦3.16bn	51%	2.1 yr
Worship Center	203	155	₦46.4m	₦46.4m	55%	1.9 yr
Commercial Corridor	177	68	₦178m	₦178m	35%	3.1 yr
Market	157	101	₦26.9m	₦26.9m	51%	2.1 yr
Place Of Worship	145	107	₦18.7m	₦18.7m	47%	2.4 yr
Commercial	126	33	₦528m	₦528m	35%	3.1 yr
Educational Facility	111	89	₦164m	₦164m	77%	1.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	183,975	5,081	₦9.22bn	₦9.15bn
Farmland	40	0	₦319k	₦319k
Farmyard	1	0	₦17.3k	₦17.3k

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	183,313	4,687	₦5.26bn	₦5.26bn	5%	17.6 yr
Enterprise	404	296	₦3.25bn	₦3.19bn	59%	1.9 yr
SME High	299	98	₦706m	₦706m	35%	3.1 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	143,407	2,220	₦365m	₦365m
3.0	16,433	1,242	₦7.07bn	₦7bn
2.0	15,207	861	₦818m	₦818m
1.0	7,876	713	₦217m	₦216m
4.0	1,080	39	₦636m	₦636m
5.0	13	6	₦112m	₦112m