Benue State

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

Ohimini has 39,183 buildings with a viable rooftop and 460 MWp of roof capacity. 20% run a generator, and together they spend ₦8.44bn a year on energy.

Viable buildings

39,183

Usable roof area

2.07 km²

460 MWp roof capacity

Energy spend

₦8.44bn/yr

7.81 GWh/yr burned on generators

Median payback

6.1 yr

Median IRR 17% (cash saved)

The savings bracket for Ohimini

Approach B

Cash saved

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

Current energy spend₦8.44bn/yr

Year-one cash saved₦8.34bn

Lifetime cash saved₦437bn

NPV₦68.4bn

Median IRR17%

Median payback6.1 yr

Unlocked energy8.34 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity45.1 MWp

Capex₦46.7bn

Year-one energy value₦43.7bn

Lifetime energy value₦2.08tn

NPV₦353bn

Median IRR103%

Median payback1.1 yr

Three ways to size Ohimini'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: 45.1 MWp
Capital cost: ₦46.7bn
Year 1 savings: ₦43.7bn/yr
NPV: ₦353bn
Median IRR: 103%
Median payback: 1.1 yr

The odds a rooftop in Ohimini pays back quickly

Of the 38,760 buildings in Ohimini with a modelled payback, 40.9% pay back inside five years and 20.2% inside three.

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How much of Ohimini's demand actually gets met

Buildings in Ohimini consume 12.7 GWh/yr but want 21 GWh/yr. The 40% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Ohimini

Loading band economics…

How many rooftops in Ohimini 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 38,760 buildings with a modelled result out of 39,183 in Ohimini. 21,523 clear a positive NPV.

Payback

Under 3 years7,838 (20%)

Under 5 years15,844 (41%)

Under 7 years21,502 (55%)

Under 10 years25,497 (66%)

Return (IRR)

Above 10%24,395 (62%)

Above 15%21,523 (55%)

Above 20%17,452 (45%)

Above 25%13,191 (34%)

CO₂ avoided

15.9 kt/yr

Fuel avoided

4.31 million litres/yr

Energy unlocked

8.34 GWh/yr

Demand that is suppressed today

People served

119k

What hardware costs right now

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

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 Ohimini

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	17,026	3,697	₦3.62bn	₦3.53bn	19%	5.6 yr
D	11,378	2,224	₦2.52bn	₦2.51bn	17%	6.4 yr
E	9,776	1,787	₦2.13bn	₦2.13bn	15%	6.9 yr
B	1,003	125	₦170m	₦170m	23%	4.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	37,631	6,627	₦6.15bn	₦6.14bn	17%	6.4 yr
Commercial General	494	378	₦711m	₦711m	43%	2.4 yr
Commercial Retail	476	299	₦35.8m	₦35.8m	41%	2.6 yr
Anchor	285	257	₦1.34bn	₦1.24bn	75%	1.4 yr
Worship	269	247	₦184m	₦184m	59%	1.9 yr
Industrial	17	14	₦20.1m	₦20.1m	65%	1.6 yr
Productive Use	6	6	₦1.19m	₦1.19m	63%	1.6 yr
Hospitality	5	5	₦4.53m	₦4.53m	65%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	12,700	2,151	₦164m	₦164m	7%	15.4 yr
50 100m2	11,241	2,150	₦1.04bn	₦1.04bn	21%	5.1 yr
30 50m2	7,587	1,364	₦232m	₦232m	9%	9.6 yr
100 250m2	6,804	1,776	₦3.33bn	₦3.33bn	27%	4.1 yr
250 1000m2	830	379	₦2.92bn	₦2.92bn	27%	4.1 yr
Over 1000m2	21	13	₦757m	₦665m	61%	1.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Rural	17,264	3,238	₦3.09bn	₦3.09bn	17%	6.4 yr
Unclassified	12,355	2,625	₦3.18bn	₦3.09bn	21%	5.4 yr
Dense Urban	5,077	635	₦693m	₦693m	15%	6.6 yr
Urban	4,487	1,335	₦1.47bn	₦1.47bn	19%	5.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	15,841	2,560	₦199m	₦199m	7%	14.6 yr
Residential Small	14,272	2,525	₦1.16bn	₦1.16bn	21%	5.1 yr
Residential	6,245	1,542	₦4.76bn	₦4.76bn	27%	4.1 yr
Residential Formal	1,247	0	₦17.7m	₦17.7m	13%	7.1 yr
Kiosk Shop	482	305	₦37m	₦37m	41%	2.6 yr
Institutional	251	225	₦1.13bn	₦1.03bn	55%	1.9 yr
Commercial Corridor	204	200	₦240m	₦240m	43%	2.4 yr
Commercial	111	21	₦83.8m	₦83.8m	33%	3.1 yr
Educational Facility	103	95	₦194m	₦194m	81%	1.4 yr
Worship Center	97	90	₦37m	₦37m	61%	1.6 yr
Place Of Worship	86	79	₦15.4m	₦15.4m	61%	1.6 yr
School	75	67	₦133m	₦133m	79%	1.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	39,183	7,833	₦8.44bn	₦8.34bn

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	38,573	7,347	₦6.77bn	₦6.76bn	17%	6.1 yr
SME High	315	221	₦323m	₦323m	43%	2.6 yr
Enterprise	295	265	₦1.35bn	₦1.26bn	73%	1.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	15,858	2,578	₦201m	₦201m
2.0	11,887	2,690	₦2.94bn	₦2.94bn
1.0	7,050	1,548	₦519m	₦519m
3.0	3,441	844	₦4.45bn	₦4.35bn
4.0	889	121	₦173m	₦173m
5.0	56	51	₦151m	₦151m
6.0	2	1	₦10.8m	₦10.8m