1700 Petaluma Marshall Rd Bldg 31
PETALUMA, CA
Walker Creek Ranch (Bldg 31) at 1700 Petaluma Marshall Rd is a multi-building retreat and conference campus owned by the Marin County Office of Education, spanning 1,700 acres with lodges, dining halls, and overnight dormitories. The site supports year-round residential outdoor education programs and private events, driving continuous HVAC, kitc...
Projected savings.
Year 1
$240,200
Lifetime (~30 yr)
$35,925,000
By the numbers.
1.1
Years to payback
$105.2M
Total benefits (lifetime)
$69.3M
Property value gain
$743,512
Tax incentives captured
Levelized cost of electricity
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 $2.42/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 263 kW solar system for on-site generation delivered as 3 SolarPort carport structures above the parking lot and a rooftop array on the building.
The system now produces roughly 495,207 AC kWh of clean energy each year, an estimated $240,200 in year-one utility offsets, and around $35,925,000 in net lifetime savings — turning a recurring operating-cost into a long-term, predictable energy hedge.
System spec
System design
- Site
- 1700 Petaluma Marshall Rd Bldg 31
PETALUMA, CA 94952-9457 - APN
- 106-200-08
- Utility
- PG&E
- Seismic rating
- 1.2
- Irradiance
- 2
- System size
- 262.5 kW DC
- Estimated production
- 495,207 AC kWh / year
- Year-1 utility offset
- $240,200
- Lifetime savings (~30 yr)
- $35,925,000
- Solar panels
-
420 ×
Q.TRON XL-G2.3/BFG
(180 carport · 240 rooftop) - SolarPort structures
- 3
- Wire loss
- 2.0%
Quick request
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