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1031 N McDowell Blvd

1031 N McDowell Blvd is the Petaluma Business Center, a Class B multi-tenant office complex totaling approximately 213,210 sq ft, built in 1990 and managed by Basin Street Properties. Tenants include technology and professional services firms, indicating standard commercial HVAC and office electrical loads typical of a large business park.

Aerial view of the  SolarPorts installation
Site aerial
System layout — solar carports at
System layout — solar carports

Projected savings.

Year 1

$109,400

Lifetime (~30 yr)

$8,159,000

By the numbers.

1.6

Years to payback

$19.3M

Total benefits (lifetime)

$11.2M

Property value gain

$440,737

Tax incentives captured

Levelized cost of energy

$0.02 / kWh · SolarPorts
vs.
$1.15 / 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 $1.15/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 125 kW solar system for on-site generation delivered as 2 SolarPort carport structures above the parking lot.

The system now produces roughly 235,813 AC kWh of clean energy each year, an estimated $109,400 in year-one utility offsets, and around $8,159,000 in net lifetime savings — turning a recurring operating-cost into a long-term, predictable energy hedge.

System spec

System design

Site
1031 N McDowell Blvd
CA
Utility
PG&E
Seismic rating
1.2
Irradiance
2
System size
125.0 kW DC
Estimated production
235,813 AC kWh / year
Year-1 utility offset
$109,400
Lifetime savings (~30 yr)
$8,159,000
Solar panels
200 × Q.TRON XL-G2.3/BFG
SolarPort structures
2
Wire loss
2.0%

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