Nasarawa State

Rooftop solar in Nasarawa Egon, Nasarawa: what the roofs are worth

Nasarawa Egon has 53,348 buildings with a viable rooftop and 665 MWp of roof capacity. 13% run a generator, and together they spend ₦14.8bn a year on energy.

Viable buildings

53,348

Usable roof area

2.98 km²

665 MWp roof capacity

Energy spend

₦14.8bn/yr

12.6 GWh/yr burned on generators

Median payback

4.6 yr

Median IRR 23% (cash saved)

The savings bracket for Nasarawa Egon

Approach B

Cash saved

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

Current energy spend₦14.8bn/yr

Year-one cash saved₦14.4bn

Lifetime cash saved₦780bn

NPV₦117bn

Median IRR23%

Median payback4.6 yr

Unlocked energy14.9 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity85.2 MWp

Capex₦89.9bn

Year-one energy value₦86.3bn

Lifetime energy value₦4.1tn

NPV₦699bn

Median IRR103%

Median payback1.1 yr

Three ways to size Nasarawa Egon'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: 85.2 MWp
Capital cost: ₦89.9bn
Year 1 savings: ₦86.3bn/yr
NPV: ₦699bn
Median IRR: 103%
Median payback: 1.1 yr

The odds a rooftop in Nasarawa Egon pays back quickly

Of the 52,568 buildings in Nasarawa Egon with a modelled payback, 53.1% pay back inside five years and 13.3% inside three.

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How much of Nasarawa Egon's demand actually gets met

Buildings in Nasarawa Egon consume 25.9 GWh/yr but want 40.9 GWh/yr. The 37% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Nasarawa Egon

Loading band economics…

How many rooftops in Nasarawa Egon 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 52,568 buildings with a modelled result out of 53,348 in Nasarawa Egon. 32,910 clear a positive NPV.

Payback

Under 3 years6,974 (13%)

Under 5 years27,898 (53%)

Under 7 years32,913 (63%)

Under 10 years39,241 (75%)

Return (IRR)

Above 10%37,211 (70%)

Above 15%32,910 (62%)

Above 20%29,428 (55%)

Above 25%25,086 (47%)

CO₂ avoided

28.3 kt/yr

Fuel avoided

6.82 million litres/yr

Energy unlocked

14.9 GWh/yr

Demand that is suppressed today

People served

254k

What hardware costs right now

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

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 Nasarawa Egon

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	24,739	2,851	₦5.75bn	₦5.41bn	17%	5.6 yr
D	14,874	1,743	₦3.73bn	₦3.67bn	21%	5.1 yr
C	10,105	2,363	₦4.73bn	₦4.7bn	27%	3.9 yr
B	3,630	152	₦612m	₦612m	23%	4.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	51,949	5,871	₦11.2bn	₦10.8bn	23%	4.9 yr
Worship	472	424	₦320m	₦320m	61%	1.6 yr
Commercial General	453	392	₦1.71bn	₦1.71bn	59%	1.9 yr
Anchor	371	330	₦1.54bn	₦1.54bn	59%	1.9 yr
Commercial Retail	91	85	₦27m	₦27m	59%	1.9 yr
Industrial	12	7	₦9.06m	₦9.06m	59%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
50 100m2	15,723	2,137	₦2.35bn	₦2.35bn	27%	3.9 yr
Under 30m2	14,735	1,340	₦184m	₦184m	7%	14.6 yr
30 50m2	11,124	1,293	₦536m	₦451m	11%	8.9 yr
100 250m2	10,518	1,947	₦6.38bn	₦6.22bn	27%	3.9 yr
250 1000m2	1,228	382	₦4.7bn	₦4.5bn	29%	3.9 yr
Over 1000m2	20	10	₦675m	₦675m	33%	2.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Unclassified	22,155	1,122	₦3.96bn	₦3.67bn	11%	8.9 yr
Dense Urban	11,727	2,083	₦4.31bn	₦4.31bn	27%	4.1 yr
Urban	11,641	2,832	₦4.55bn	₦4.4bn	27%	3.9 yr
Rural	7,810	1,072	₦2bn	₦2bn	23%	4.9 yr
Urban Centre	15	0	₦1.16m	₦1.16m	27%	3.9 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	19,342	1,859	₦222m	₦222m	7%	13.6 yr
Residential Small	16,368	2,314	₦2.7bn	₦2.62bn	27%	3.9 yr
Residential Formal	7,522	199	₦273m	₦273m	25%	4.4 yr
Residential	7,238	1,499	₦7.97bn	₦7.62bn	29%	3.9 yr
Residential Informal	1,477	0	₦42.4m	₦42.4m	23%	4.9 yr
Institutional	376	334	₦1.07bn	₦1.07bn	59%	1.9 yr
Worship Center	175	158	₦75.2m	₦75.2m	65%	1.6 yr
Place Of Worship	136	121	₦30.8m	₦30.8m	65%	1.6 yr
Educational Facility	127	115	₦272m	₦272m	85%	1.1 yr
Commercial	119	115	₦868m	₦868m	61%	1.6 yr
Kiosk Shop	91	85	₦27m	₦27m	59%	1.9 yr
Healthcare Facility	90	81	₦618m	₦618m	53%	1.9 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	53,348	7,109	₦14.8bn	₦14.4bn

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	52,778	6,588	₦12.1bn	₦11.7bn	23%	4.6 yr
Enterprise	379	335	₦1.55bn	₦1.55bn	59%	1.9 yr
SME High	191	186	₦1.15bn	₦1.15bn	61%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	19,357	1,873	₦223m	₦223m
2.0	13,176	2,399	₦4.87bn	₦4.79bn
1.0	10,100	1,568	₦1.47bn	₦1.39bn
4.0	5,439	190	₦948m	₦948m
3.0	5,274	1,077	₦7.23bn	₦6.96bn
5.0	2	2	₦74.2m	₦74.2m