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1758 CORPORATE CIR
PETALUMA, CA

1758 Corporate Circle is a single-story office/flex industrial building within Lakeville Business Park, totaling approximately 7,562 sq ft of leasable space. The site is occupied by Stero, an industrial machinery manufacturer specializing in commercial-grade dishwashing equipment, with typical light manufacturing and office energy loads.

System layout — solar carports at PETALUMA
System layout — solar carports

Projected savings.

Year 1

$133,600

Lifetime (~30 yr)

$9,961,000

By the numbers.

2.2

Years to payback

$23.6M

Total benefits (lifetime)

$13.7M

Property value gain

$696,362

Tax incentives captured

Levelized cost of electricity

$0.03 / kWh · SolarPorts
vs.
$1.16 / kWh · PG&E

Like most PETALUMA 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 $0.03/kWh from SolarPorts.

SolarPorts evaluated their interval power usage (every 15 minutes) and proposed a right-sized 150 kW solar system for on-site generation delivered as 2 SolarPort carport structures above the parking lot.

The system now produces roughly 285,886 AC kWh of clean energy each year, an estimated $133,600 in year-one utility offsets, and around $9,961,000 in net lifetime savings — turning a recurring operating-cost into a long-term, predictable energy hedge.

System spec

System design

Site
1758 CORPORATE CIR
PETALUMA, CA 94954-6924
APN
005280035000
Utility
PG&E
Seismic rating
1.2
Irradiance
2
System size
150.0 kW DC
Estimated production
285,886 AC kWh / year
Year-1 utility offset
$133,600
Lifetime savings (~30 yr)
$9,961,000
Solar panels
240 × Q.TRON XL-G2.3/BFG
SolarPort structures
2
Wire loss
2.0%

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