[01] Case C2 · Kenning
Kenning, 8.8 kW
A gabled family home with a south slope, a battery in the garage and an evening routine that finally matches the sun.
System size
8.8 kW
+ 13.5 kWh battery
Yearly output (est.)
11,000 kWh
≈ $2,150 a year saved (est.)
[02] The roof
A south slope with almost no shade.
The house has a 35-degree slope facing south, a clay tile finish in good condition and one chimney that shades the lowest corner for about forty minutes on winter mornings. Sofia Reyes measured it from a ladder and moved the first row of panels up by a metre to clear it.
The family cooks and charges a car after six, so the roof was only half the question. The other half was where the afternoon surplus would go.
[03] The install
Three days on the roof, one in the garage.
Marcus Bell’s crew of three fitted 22 panels over three days in March 2025. Day one was rails and flashings, day two panels and cabling, day three the roof walk and testing. Priya Natarajan mounted the 13.5 kWh battery and the inverter on the garage wall on the fourth day.
The local network operator inspected the connection two weeks later and the system went live the same week. Total time from signed proposal to switch-on: six weeks.
[04] The numbers
What we modelled, and what we will check.
System size
8.8kW
22 panels, south slope+ 13.5 kWh battery
Yearly output (est.)
11,000kWh
≈ 1,250 kWh per kWmodelled yield
Yearly saving (est.)
$2,150
at $0.20 / kWhhousehold rate
Estimates use the system’s modelled yield and a $0.20/kWh household rate ($0.15/kWh for commercial). Your bill depends on your tariff, usage and weather. We do not guarantee savings.
[05] The household
What the family says.
“We used to be out of power by nine in the evening. Now the battery carries us to bedtime on most days, and Tomás came back after a year to compare the meter with the estimate.”
A Kenning homeowner, sample quotation. Back to all installations · Pricing & financing
[09] Free roof assessment
Ask us to look at your roof.
A 45-minute visit, a written proposal in 5 working days, and no obligation. Phone (555) 014-2290 or use the form.