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550 West Charter Way
Stockton, CA

550 W. Charter Way is the American Inn (Days Inn-branded), a 75-room, 24-hour hotel near Interstate 5 in South Stockton. The hospitality property has continuous HVAC, lighting, laundry, and water-heating loads typical of a mid-scale lodging operation.

System layout — rooftop arrays at Stockton
System layout — rooftop arrays

Projected savings.

Year 1

$39,400

Lifetime (~30 yr)

$2,941,000

By the numbers.

1.1

Years to payback

$7.0M

Total benefits (lifetime)

$4.0M

Property value gain

$92,523

Tax incentives captured

Levelized cost of electricity

$0.02 / kWh · SolarPorts
vs.
$1.16 / kWh · PG&E

Like most Stockton businesses, the site was paying high Peak rates and large Demand charges — the kind of bill structure that punishes daytime energy use and penalizes the very hours commercial properties consume the most power. The result was a Levelized Cost Of Energy (LCOE) of $1.16/kWh from PG&E, reduced to $0.02/kWh from SolarPorts.

SolarPorts evaluated their interval power usage (every 15 minutes) and proposed a right-sized 45.0 kW solar system for on-site generation delivered as a rooftop array on the building.

The system now produces roughly 84,672 AC kWh of clean energy each year, an estimated $39,400 in year-one utility offsets, and around $2,941,000 in net lifetime savings — turning a recurring operating-cost into a long-term, predictable energy hedge.

System spec

System design

Site
550 West Charter Way
Stockton, CA 95206
APN
16504012
Utility
PG&E
Seismic rating
1.2
Irradiance
2
System size
45.0 kW DC
Estimated production
84,672 AC kWh / year
Year-1 utility offset
$39,400
Lifetime savings (~30 yr)
$2,941,000
Solar panels
90 × TSM-DEG18MC.20(II)
Wire loss
2.0%

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