Katsina State

Rooftop solar in Matazu, Katsina: what the roofs are worth

Matazu has 71,316 buildings with a viable rooftop and 667 MWp of roof capacity. 34% run a generator, and together they spend ₦57bn a year on energy.

Viable buildings

71,316

Usable roof area

3 km²

667 MWp roof capacity

Energy spend

₦57bn/yr

59.3 GWh/yr burned on generators

Median payback

5.4 yr

Median IRR 21% (cash saved)

The savings bracket for Matazu

Approach B

Cash saved

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

Current energy spend₦57bn/yr

Year-one cash saved₦49.9bn

Lifetime cash saved₦2.45tn

NPV₦400bn

Median IRR21%

Median payback5.4 yr

Unlocked energy22.1 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity109 MWp

Capex₦115bn

Year-one energy value₦116bn

Lifetime energy value₦5.41tn

NPV₦934bn

Median IRR113%

Median payback0.9 yr

Three ways to size Matazu'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: 109 MWp
Capital cost: ₦115bn
Year 1 savings: ₦116bn/yr
NPV: ₦934bn
Median IRR: 113%
Median payback: 0.9 yr

The odds a rooftop in Matazu pays back quickly

Of the 71,245 buildings in Matazu with a modelled payback, 48.6% pay back inside five years and 33.6% inside three.

Create a free account

How much of Matazu's demand actually gets met

Buildings in Matazu consume 95.4 GWh/yr but want 117 GWh/yr. The 19% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Matazu

Loading band economics…

How many rooftops in Matazu 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 71,245 buildings with a modelled result out of 71,316 in Matazu. 38,681 clear a positive NPV.

Payback

Under 3 years23,944 (34%)

Under 5 years34,624 (49%)

Under 7 years38,705 (54%)

Under 10 years47,136 (66%)

Return (IRR)

Above 10%43,987 (62%)

Above 15%38,681 (54%)

Above 20%35,948 (50%)

Above 25%32,125 (45%)

CO₂ avoided

79.8 kt/yr

Fuel avoided

24.2 million litres/yr

Energy unlocked

22.1 GWh/yr

Demand that is suppressed today

People served

206k

What hardware costs right now

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

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 Matazu

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
E	23,839	7,957	₦20.3bn	₦18bn	17%	5.9 yr
D	21,568	4,820	₦12bn	₦10.4bn	9%	9.6 yr
C	18,748	7,201	₦12.5bn	₦11.4bn	25%	4.4 yr
B	7,161	4,161	₦12.2bn	₦10bn	45%	2.4 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	70,608	23,509	₦26.7bn	₦26.6bn	19%	5.4 yr
Anchor	385	339	₦29.6bn	₦22.5bn	71%	1.4 yr
Worship	223	207	₦321m	₦321m	67%	1.6 yr
Commercial General	96	80	₦430m	₦421m	61%	1.6 yr
Industrial	4	4	₦14.3m	₦14.2m	49%	1.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	35,733	10,202	₦1.13bn	₦1.12bn	7%	13.9 yr
30 50m2	16,080	5,528	₦1.05bn	₦1.05bn	15%	7.1 yr
50 100m2	10,925	4,326	₦2.2bn	₦2.2bn	31%	3.4 yr
100 250m2	5,337	2,335	₦4.87bn	₦4.82bn	31%	3.4 yr
250 1000m2	2,758	1,392	₦13.7bn	₦13.7bn	43%	2.4 yr
Over 1000m2	483	356	₦34bn	₦27bn	71%	1.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	48,635	20,023	₦41.5bn	₦37bn	27%	4.1 yr
Unclassified	12,075	540	₦3.33bn	₦2.96bn	7%	14.4 yr
Dense Urban	6,273	3,440	₦11.3bn	₦9.16bn	43%	2.4 yr
Rural	4,333	136	₦842m	₦733m	9%	13.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	45,679	12,952	₦1.58bn	₦1.58bn	9%	12.9 yr
Residential Small	12,043	4,643	₦2.45bn	₦2.44bn	31%	3.4 yr
Residential Informal	6,900	3,467	₦2.64bn	₦2.64bn	33%	3.4 yr
Residential	5,986	2,447	₦20bn	₦19.9bn	33%	3.4 yr
Institutional	325	289	₦29.3bn	₦22.3bn	65%	1.6 yr
Worship Center	82	75	₦28.1m	₦28.1m	71%	1.4 yr
Educational Facility	79	68	₦192m	₦192m	93%	1.1 yr
Place Of Worship	72	68	₦59.2m	₦59.2m	71%	1.4 yr
Healthcare Facility	52	46	₦332m	₦330m	59%	1.9 yr
School	47	40	₦97.3m	₦97.3m	91%	1.1 yr
Clinic	38	31	₦227m	₦203m	59%	1.9 yr
Commercial	5	5	₦45.9m	₦45.9m	75%	1.4 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	71,316	24,139	₦57bn	₦49.9bn

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	70,930	23,797	₦27.4bn	₦27.3bn	21%	5.4 yr
Enterprise	381	337	₦29.6bn	₦22.5bn	73%	1.4 yr
SME High	5	5	₦45.9m	₦45.9m	75%	1.4 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	43,727	11,724	₦1.46bn	₦1.46bn
3.0	10,432	4,583	₦35.5bn	₦31.5bn
2.0	8,885	3,913	₦2.37bn	₦2.32bn
1.0	6,236	2,666	₦844m	₦844m
4.0	2,035	1,252	₦16.8bn	₦13.7bn
5.0	1	1	₦21m	₦21m