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1125 N McDowell Blvd

1125 N McDowell Blvd, Petaluma, CA 94954 is an approximately 58,900 sq ft single-story flex/light-manufacturing building built in 1986, part of the Petaluma Business Center campus managed by Basin Street Properties. The site hosts multi-tenant office and light industrial occupants with high ceilings (20 ft clear), dock doors, and drive-in access.

System layout — rooftop arrays at
System layout — rooftop arrays

Projected savings.

Year 1

$165,400

Lifetime (~30 yr)

$12,333,000

By the numbers.

1.3

Years to payback

$29.2M

Total benefits (lifetime)

$16.9M

Property value gain

$578,871

Tax incentives captured

Levelized cost of electricity

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

Like most California 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 188 kW solar system for on-site generation delivered as a rooftop array on the building.

The system now produces roughly 353,719 AC kWh of clean energy each year, an estimated $165,400 in year-one utility offsets, and around $12,333,000 in net lifetime savings — turning a recurring operating-cost into a long-term, predictable energy hedge.

System spec

System design

Site
1125 N McDowell Blvd
CA
Utility
PG&E
Seismic rating
1.2
Irradiance
2
System size
187.5 kW DC
Estimated production
353,719 AC kWh / year
Year-1 utility offset
$165,400
Lifetime savings (~30 yr)
$12,333,000
Solar panels
300 × Q.TRON XL-G2.3/BFG
Wire loss
2.0%

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