Jigawa State

Rooftop solar in Kiri Kasama, Jigawa: what the roofs are worth

Kiri Kasama has 72,353 buildings with a viable rooftop and 490 MWp of roof capacity. 1% run a generator, and together they spend ₦11.8bn a year on energy.

Viable buildings

72,353

Usable roof area

2.22 km²

490 MWp roof capacity

Energy spend

₦11.8bn/yr

9.73 GWh/yr burned on generators

Median payback

6.1 yr

Median IRR 17% (cash saved)

The savings bracket for Kiri Kasama

Approach B

Cash saved

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

Current energy spend₦11.8bn/yr

Year-one cash saved₦9.28bn

Lifetime cash saved₦507bn

NPV₦73.7bn

Median IRR17%

Median payback6.1 yr

Unlocked energy11.4 GWh/yr

Approach A

Energy value (upper bracket)

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

Installed capacity65.7 MWp

Capex₦71bn

Year-one energy value₦75.2bn

Lifetime energy value₦3.53tn

NPV₦611bn

Median IRR103%

Median payback1.1 yr

Three ways to size Kiri Kasama'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: 65.7 MWp
Capital cost: ₦71bn
Year 1 savings: ₦75.2bn/yr
NPV: ₦611bn
Median IRR: 103%
Median payback: 1.1 yr

The odds a rooftop in Kiri Kasama pays back quickly

Of the 70,987 buildings in Kiri Kasama with a modelled payback, 35.2% pay back inside five years and 1.2% inside three.

Create a free account

How much of Kiri Kasama's demand actually gets met

Buildings in Kiri Kasama consume 25.6 GWh/yr but want 37 GWh/yr. The 31% they cannot buy is suppressed demand — load that appears the moment supply is reliable.

Create a free account

Electricity billing bands in Kiri Kasama

Loading band economics…

How many rooftops in Kiri Kasama 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 70,987 buildings with a modelled result out of 72,353 in Kiri Kasama. 37,896 clear a positive NPV.

Payback

Under 3 years871 (1%)

Under 5 years24,991 (35%)

Under 7 years37,997 (54%)

Under 10 years48,043 (68%)

Return (IRR)

Above 10%44,852 (62%)

Above 15%37,896 (52%)

Above 20%29,172 (40%)

Above 25%18,683 (26%)

CO₂ avoided

19.3 kt/yr

Fuel avoided

3.36 million litres/yr

Energy unlocked

11.4 GWh/yr

Demand that is suppressed today

People served

262k

What hardware costs right now

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

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 Kiri Kasama

Electricity billing band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
C	24,814	498	₦6.54bn	₦4.51bn	19%	5.6 yr
E	19,973	105	₦2.01bn	₦1.86bn	15%	6.4 yr
D	17,215	68	₦1.2bn	₦1.1bn	9%	9.6 yr
B	5,977	15	₦812m	₦558m	19%	5.4 yr
A	4,374	144	₦1.26bn	₦1.26bn	19%	5.6 yr

Load profile

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Residential	72,027	622	₦7.62bn	₦5.53bn	17%	6.1 yr
Anchor	176	116	₦3.96bn	₦3.52bn	61%	1.6 yr
Commercial General	66	40	₦211m	₦211m	55%	1.9 yr
Worship	54	51	₦29.9m	₦29.9m	61%	1.6 yr
Commercial Retail	25	0	₦331k	₦331k	29%	3.6 yr
Industrial	5	1	₦1.28m	₦1.28m	41%	2.6 yr

Roof size band

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Under 30m2	38,600	298	₦181m	₦181m	9%	13.4 yr
30 50m2	15,211	140	₦241m	₦241m	17%	6.1 yr
50 100m2	12,413	144	₦1.17bn	₦1.08bn	29%	3.6 yr
100 250m2	4,644	173	₦2.89bn	₦1.95bn	31%	3.4 yr
250 1000m2	1,331	48	₦3.32bn	₦2.33bn	31%	3.4 yr
Over 1000m2	154	27	₦4.02bn	₦3.5bn	33%	3.4 yr

Settlement type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Urban	26,548	544	₦7.8bn	₦5.61bn	17%	6.1 yr
Rural	25,223	122	₦1.85bn	₦1.55bn	17%	5.9 yr
Dense Urban	11,348	85	₦1.03bn	₦1.02bn	21%	5.4 yr
Unclassified	9,234	79	₦1.14bn	₦1.11bn	7%	15.1 yr

Building type

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)	Median IRR	Median payback
Shed	45,113	362	₦225m	₦225m	9%	9.9 yr
Residential Informal	13,346	2	₦1.13bn	₦1.08bn	27%	3.9 yr
Residential Small	10,091	163	₦1.19bn	₦1.11bn	29%	3.9 yr
Residential	3,477	95	₦5.08bn	₦3.12bn	31%	3.4 yr
Institutional	109	80	₦3.83bn	₦3.4bn	59%	1.9 yr
Educational Facility	87	59	₦88m	₦88m	77%	1.4 yr
Healthcare Facility	28	18	₦227m	₦217m	49%	2.1 yr
Worship Center	25	24	₦3.4m	₦3.4m	67%	1.6 yr
Kiosk Shop	25	0	₦331k	₦331k	29%	3.6 yr
School	20	12	₦15.8m	₦15.8m	71%	1.4 yr
Place Of Worship	11	10	₦1.9m	₦1.9m	61%	1.6 yr
Commercial Corridor	6	1	₦1.45m	₦1.45m	37%	2.9 yr

Land use

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
(Unset)	72,348	830	₦11.8bn	₦9.28bn
Farmyard	5	0	₦457k	₦457k

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	72,166	713	₦7.86bn	₦5.77bn	17%	6.1 yr
Enterprise	179	116	₦3.96bn	₦3.52bn	59%	1.9 yr
SME High	8	1	₦1.73m	₦1.73m	37%	2.9 yr

Demand tier

Segment	Buildings	With generator	Spend ₦/yr	Cash saved yr 1 (B)
0.0	42,483	367	₦207m	₦207m
2.0	14,146	193	₦2.14bn	₦1.71bn
1.0	8,214	86	₦540m	₦493m
3.0	6,065	153	₦7.57bn	₦5.67bn
4.0	1,445	31	₦1.37bn	₦1.2bn