Delta State

Rooftop solar in Bomadi, Delta: what the roofs are worth

Bomadi has 14,869 buildings with a viable rooftop and 347 MWp of roof capacity. 74% run a generator, and together they spend ₦94.8bn a year on energy.

Viable buildings

14,869

Usable roof area

1.54 km²

347 MWp roof capacity

Energy spend

₦94.8bn/yr

82.8 GWh/yr burned on generators

Median payback

1.9 yr

Median IRR 57% (cash saved)

The savings bracket for Bomadi

Approach B

Cash saved

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

Current energy spend₦94.8bn/yr

Year-one cash saved₦88.1bn

Lifetime cash saved₦4.27tn

NPV₦677bn

Median IRR57%

Median payback1.9 yr

Unlocked energy11.9 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity125 MWp

Capex₦131bn

Year-one energy value₦110bn

Lifetime energy value₦5.11tn

NPV₦858bn

Median IRR83%

Median payback1.4 yr

Three ways to size Bomadi'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: 125 MWp
Capital cost: ₦131bn
Year 1 savings: ₦110bn/yr
NPV: ₦858bn
Median IRR: 83%
Median payback: 1.4 yr

The odds a rooftop in Bomadi pays back quickly

Of the 14,798 buildings in Bomadi with a modelled payback, 88.3% pay back inside five years and 74.0% inside three.

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How much of Bomadi's demand actually gets met

Buildings in Bomadi consume 108 GWh/yr but want 120 GWh/yr. The 10% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Bomadi

Loading band economics…

How many rooftops in Bomadi 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 14,798 buildings with a modelled result out of 14,869 in Bomadi. 13,652 clear a positive NPV.

Payback

Under 3 years10,956 (74%)

Under 5 years13,074 (88%)

Under 7 years13,648 (92%)

Under 10 years13,899 (94%)

Return (IRR)

Above 10%13,827 (93%)

Above 15%13,652 (92%)

Above 20%13,179 (89%)

Above 25%11,225 (75%)

CO₂ avoided

137 kt/yr

Fuel avoided

52.7 million litres/yr

Energy unlocked

11.9 GWh/yr

Demand that is suppressed today

People served

174k

What hardware costs right now

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

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 Bomadi

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	5,928	3,780	₦44.1bn	₦40.4bn	67%	1.6 yr
D	5,700	4,525	₦29.8bn	₦27.2bn	57%	1.9 yr
C	3,241	2,717	₦20.9bn	₦20.5bn	55%	1.9 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	14,560	10,716	₦90.3bn	₦83.8bn	57%	1.9 yr
Anchor	129	126	₦2.49bn	₦2.27bn	69%	1.6 yr
Commercial General	101	101	₦1.3bn	₦1.27bn	53%	1.9 yr
Worship	70	70	₦590m	₦568m	53%	2.1 yr
Industrial	8	8	₦157m	₦150m	75%	1.4 yr
Commercial Retail	1	1	₦607k	₦607k	55%	1.9 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
100 250m2	4,978	3,863	₦38bn	₦35.8bn	59%	1.9 yr
Under 30m2	3,191	2,104	₦656m	₦651m	57%	1.9 yr
50 100m2	2,947	2,221	₦5.61bn	₦5.58bn	59%	1.9 yr
30 50m2	1,916	1,357	₦1.07bn	₦1.06bn	57%	1.9 yr
250 1000m2	1,815	1,460	₦47.1bn	₦42.7bn	59%	1.9 yr
Over 1000m2	22	17	₦2.45bn	₦2.36bn	61%	1.6 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Dense Urban	6,142	4,856	₦26.6bn	₦26.1bn	57%	1.9 yr
Rural	4,644	3,314	₦29.1bn	₦27.8bn	65%	1.6 yr
Urban	2,352	2,084	₦24.4bn	₦22.5bn	61%	1.6 yr
Unclassified	1,731	768	₦14.7bn	₦11.8bn	25%	4.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	4,912	3,845	₦10bn	₦9.82bn	59%	1.9 yr
Residential	4,825	3,790	₦75.2bn	₦69bn	59%	1.9 yr
Shed	3,548	2,139	₦383m	₦383m	55%	1.9 yr
Residential Formal	587	364	₦287m	₦287m	37%	2.9 yr
Residential Informal	527	517	₦4.36bn	₦4.34bn	49%	2.1 yr
Apartment	155	58	₦32.4m	₦32.4m	25%	4.4 yr
Institutional	98	98	₦1.94bn	₦1.87bn	53%	2.1 yr
Educational Facility	50	50	₦438m	₦438m	69%	1.6 yr
School	43	42	₦320m	₦320m	69%	1.6 yr
Worship Center	25	25	₦56.6m	₦56.6m	53%	1.9 yr
Place Of Worship	23	23	₦28.5m	₦28.5m	53%	2.1 yr
Commercial	22	22	₦483m	₦459m	63%	1.6 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	14,855	11,022	₦94.8bn	₦88.1bn
Industrial	14	0	₦81.4k	₦81.4k

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	14,710	10,866	₦91.7bn	₦85.2bn	57%	1.9 yr
Enterprise	137	134	₦2.65bn	₦2.42bn	71%	1.4 yr
SME High	22	22	₦483m	₦459m	63%	1.6 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
3.0	7,599	6,182	₦83bn	₦76.9bn
0.0	3,548	2,139	₦383m	₦383m
2.0	2,204	1,629	₦5.34bn	₦4.88bn
4.0	1,222	898	₦5.82bn	₦5.69bn
1.0	296	174	₦265m	₦262m