Ebonyi State

Rooftop solar in Ebonyi, Ebonyi: what the roofs are worth

Ebonyi has 81,265 buildings with a viable rooftop and 1.48 GWp of roof capacity. 12% run a generator, and together they spend ₦12.9bn a year on energy.

Viable buildings

81,265

Usable roof area

6.62 km²

1.48 GWp roof capacity

Energy spend

₦12.9bn/yr

8.95 GWh/yr burned on generators

Median payback

6.4 yr

Median IRR 17% (cash saved)

The savings bracket for Ebonyi

Approach B

Cash saved

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

Current energy spend₦12.9bn/yr

Year-one cash saved₦12.7bn

Lifetime cash saved₦761bn

NPV₦102bn

Median IRR17%

Median payback6.4 yr

Unlocked energy24.8 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity124 MWp

Capex₦113bn

Year-one energy value₦76.3bn

Lifetime energy value₦3.57tn

NPV₦576bn

Median IRR91%

Median payback1.1 yr

Three ways to size Ebonyi'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: 124 MWp
Capital cost: ₦113bn
Year 1 savings: ₦76.3bn/yr
NPV: ₦576bn
Median IRR: 91%
Median payback: 1.1 yr

The odds a rooftop in Ebonyi pays back quickly

Of the 76,537 buildings in Ebonyi with a modelled payback, 36.1% pay back inside five years and 12.3% inside three.

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How much of Ebonyi's demand actually gets met

Buildings in Ebonyi consume 38 GWh/yr but want 62.7 GWh/yr. The 39% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

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Electricity billing bands in Ebonyi

Loading band economics…

How many rooftops in Ebonyi 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 76,537 buildings with a modelled result out of 81,265 in Ebonyi. 43,091 clear a positive NPV.

Payback

Under 3 years9,418 (12%)

Under 5 years27,605 (36%)

Under 7 years42,977 (56%)

Under 10 years53,931 (70%)

Return (IRR)

Above 10%52,269 (64%)

Above 15%43,091 (53%)

Above 20%31,498 (39%)

Above 25%21,764 (27%)

CO₂ avoided

31.5 kt/yr

Fuel avoided

3.29 million litres/yr

Energy unlocked

24.8 GWh/yr

Demand that is suppressed today

People served

124k

What hardware costs right now

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

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 Ebonyi

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
A	22,677	700	₦5.16bn	₦5.16bn	17%	5.1 yr
D	21,254	1,932	₦1.99bn	₦1.99bn	15%	7.4 yr
E	19,803	2,225	₦1.96bn	₦1.96bn	15%	7.1 yr
C	10,590	2,238	₦1.9bn	₦1.66bn	17%	5.9 yr
B	6,941	2,768	₦1.9bn	₦1.9bn	25%	4.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	75,342	7,952	₦3.02bn	₦3.02bn	15%	6.6 yr
Commercial General	2,690	812	₦4.24bn	₦4.24bn	35%	3.1 yr
Anchor	993	394	₦3.93bn	₦3.68bn	41%	2.6 yr
Commercial Retail	943	116	₦61.7m	₦61.7m	33%	3.4 yr
Industrial	762	361	₦1.02bn	₦1.02bn	37%	2.9 yr
Worship	357	202	₦253m	₦253m	53%	2.1 yr
Hospitality	80	8	₦282m	₦282m	33%	3.1 yr
Filling Station	69	18	₦69.7m	₦69.7m	35%	3.1 yr
Mall Retail	15	0	₦39.9m	₦39.9m	33%	3.1 yr
Productive Use	13	0	₦4.94m	₦4.94m	33%	3.1 yr
Automotive	1	0	₦1.7m	₦1.7m	31%	3.4 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
50 100m2	24,907	2,455	₦879m	₦879m	17%	6.4 yr
100 250m2	18,669	2,983	₦2.74bn	₦2.73bn	23%	4.6 yr
Under 30m2	18,300	1,900	₦263m	₦261m	5%	16.1 yr
30 50m2	12,853	1,238	₦264m	₦264m	9%	13.4 yr
250 1000m2	6,375	1,258	₦5.88bn	₦5.65bn	25%	4.4 yr
Over 1000m2	161	29	₦2.89bn	₦2.89bn	31%	3.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	43,239	4,353	₦4.13bn	₦4.13bn	15%	7.1 yr
Urban Centre	33,022	5,129	₦8.33bn	₦8.08bn	19%	4.9 yr
Unclassified	5,004	381	₦453m	₦453m	13%	7.4 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential Small	27,200	3,142	₦529m	₦529m	17%	6.4 yr
Shed	18,307	1,637	₦185m	₦185m	7%	15.1 yr
Residential	13,038	2,679	₦2.07bn	₦2.07bn	25%	4.4 yr
Residential Informal	10,448	149	₦153m	₦153m	11%	6.4 yr
Residential Formal	6,041	306	₦66.2m	₦66.2m	11%	6.6 yr
Institutional	1,283	608	₦3.16bn	₦3.16bn	31%	3.4 yr
Commercial	950	189	₦1.94bn	₦1.94bn	35%	3.1 yr
Kiosk Shop	948	116	₦59.9m	₦59.9m	33%	3.4 yr
Industrial Site	657	337	₦821m	₦821m	39%	2.9 yr
Commercial Corridor	441	45	₦546m	₦546m	35%	3.1 yr
Agricultural	308	39	₦19.6m	₦19.6m	23%	4.6 yr
Educational Facility	300	148	₦348m	₦348m	45%	2.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	81,265	9,863	₦12.9bn	₦12.7bn

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	78,018	8,866	₦5.5bn	₦5.5bn	15%	6.4 yr
Enterprise	1,720	742	₦4.8bn	₦4.55bn	41%	2.6 yr
SME High	1,527	255	₦2.62bn	₦2.62bn	35%	3.1 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
2.0	28,651	3,513	₦1.29bn	₦1.29bn
0.0	18,472	1,655	₦193m	₦193m
1.0	14,214	1,130	₦252m	₦251m
3.0	13,379	3,162	₦6.38bn	₦6.14bn
4.0	5,721	392	₦2.87bn	₦2.87bn
5.0	555	10	₦785m	₦785m
6.0	273	1	₦1.15bn	₦1.15bn