Kogi State

Rooftop solar in Okehi, Kogi: what the roofs are worth

Okehi has 43,951 buildings with a viable rooftop and 982 MWp of roof capacity. 26% run a generator, and together they spend ₦25.6bn a year on energy.

Viable buildings

43,951

Usable roof area

4.37 km²

982 MWp roof capacity

Energy spend

₦25.6bn/yr

20.7 GWh/yr burned on generators

Median payback

4.1 yr

Median IRR 27% (cash saved)

The savings bracket for Okehi

Approach B

Cash saved

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

Current energy spend₦25.6bn/yr

Year-one cash saved₦24.3bn

Lifetime cash saved₦1.31tn

NPV₦196bn

Median IRR27%

Median payback4.1 yr

Unlocked energy22.6 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity90.6 MWp

Capex₦92.3bn

Year-one energy value₦72.3bn

Lifetime energy value₦3.42tn

NPV₦565bn

Median IRR85%

Median payback1.1 yr

Three ways to size Okehi'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: 90.6 MWp
Capital cost: ₦92.3bn
Year 1 savings: ₦72.3bn/yr
NPV: ₦565bn
Median IRR: 85%
Median payback: 1.1 yr

The odds a rooftop in Okehi pays back quickly

Of the 42,796 buildings in Okehi with a modelled payback, 66.3% pay back inside five years and 25.4% inside three.

Create a free account

How much of Okehi's demand actually gets met

Buildings in Okehi consume 44.1 GWh/yr but want 66.7 GWh/yr. The 34% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Okehi

Loading band economics…

How many rooftops in Okehi 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 42,796 buildings with a modelled result out of 43,951 in Okehi. 33,338 clear a positive NPV.

Payback

Under 3 years10,855 (25%)

Under 5 years28,368 (66%)

Under 7 years33,318 (78%)

Under 10 years35,861 (84%)

Return (IRR)

Above 10%35,512 (81%)

Above 15%33,338 (76%)

Above 20%29,814 (68%)

Above 25%25,599 (58%)

CO₂ avoided

47.3 kt/yr

Fuel avoided

11.8 million litres/yr

Energy unlocked

22.6 GWh/yr

Demand that is suppressed today

People served

185k

What hardware costs right now

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

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 Okehi

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	27,797	6,994	₦13.2bn	₦12.7bn	27%	4.1 yr
D	10,011	3,899	₦9.05bn	₦9.01bn	27%	4.1 yr
E	4,821	405	₦2.5bn	₦1.8bn	5%	17.1 yr
B	1,322	303	₦794m	₦794m	27%	4.1 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	41,769	10,946	₦20.3bn	₦19.2bn	27%	4.1 yr
Commercial General	1,103	379	₦1.85bn	₦1.85bn	35%	3.1 yr
Commercial Retail	725	102	₦45.3m	₦45.3m	33%	3.1 yr
Anchor	323	161	₦3.36bn	₦3.13bn	45%	2.4 yr
Worship	22	10	₦10m	₦10m	33%	3.1 yr
Filling Station	4	2	₦1.53m	₦1.53m	35%	2.9 yr
Industrial	3	1	₦3.72m	₦3.72m	37%	2.9 yr
Hospitality	2	0	₦3.55m	₦3.55m	29%	3.1 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	18,062	5,454	₦10.3bn	₦10.2bn	27%	4.1 yr
Under 30m2	11,112	1,848	₦204m	₦204m	5%	14.4 yr
50 100m2	6,759	1,659	₦1.25bn	₦895m	25%	4.4 yr
30 50m2	4,028	943	₦198m	₦198m	19%	5.6 yr
250 1000m2	3,926	1,663	₦10.7bn	₦10.1bn	27%	3.9 yr
Over 1000m2	64	34	₦2.9bn	₦2.72bn	51%	1.9 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban Centre	25,272	6,583	₦13bn	₦12.8bn	27%	4.1 yr
Unclassified	9,806	2,142	₦5.25bn	₦4.19bn	7%	9.9 yr
Dense Urban	5,520	1,511	₦3.03bn	₦3.03bn	27%	3.9 yr
Urban	2,900	1,176	₦4.02bn	₦4.02bn	27%	3.9 yr
Rural	453	189	₦291m	₦291m	27%	4.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Formal	11,803	1,325	₦1.14bn	₦1.14bn	23%	4.4 yr
Residential	9,952	4,752	₦17bn	₦16.2bn	27%	3.9 yr
Shed	8,816	1,786	₦218m	₦218m	7%	15.1 yr
Residential Small	7,153	2,530	₦1.65bn	₦1.3bn	27%	4.1 yr
Apartment	2,062	177	₦134m	₦134m	27%	4.1 yr
Residential Informal	1,348	313	₦164m	₦164m	27%	4.1 yr
Kiosk Shop	725	102	₦45.3m	₦45.3m	33%	3.1 yr
Commercial	717	280	₦1.03bn	₦1.03bn	35%	3.1 yr
Duplex	635	63	₦43.7m	₦43.7m	27%	4.1 yr
Institutional	185	92	₦2.47bn	₦2.45bn	33%	3.4 yr
Commercial Corridor	175	2	₦131m	₦131m	35%	3.1 yr
Educational Facility	113	59	₦265m	₦265m	51%	2.1 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	43,871	11,531	₦25.4bn	₦24.1bn
Industrial	78	70	₦198m	₦198m
Farmland	2	0	₦2.38m	₦2.38m

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	42,730	11,156	₦21.1bn	₦20bn	27%	4.1 yr
SME High	897	284	₦1.16bn	₦1.16bn	35%	3.1 yr
Enterprise	324	161	₦3.36bn	₦3.13bn	45%	2.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
4.0	14,296	1,699	₦1.92bn	₦1.92bn
3.0	13,171	5,571	₦19.9bn	₦19.1bn
0.0	8,721	1,740	₦199m	₦199m
2.0	5,448	1,894	₦2.06bn	₦1.83bn
1.0	1,538	428	₦424m	₦165m
5.0	685	223	₦693m	₦693m
6.0	92	46	₦421m	₦421m