115 INEZ PL
MILL VALLEY, CA
115 Inez Pl is a ~5,669 sq ft single-family residence on a 0.52-acre lot in Mill Valley, CA, used as the registered business address for a small residential general contracting and solar firm. Energy loads are typical of a home-office setting with no significant commercial or industrial consumption.
Projected savings.
Year 1
$2,500
Lifetime (~30 yr)
$190,000
By the numbers.
1.3
Years to payback
$0.4M
Total benefits (lifetime)
$0.3M
Property value gain
$6,648
Tax incentives captured
Levelized cost of energy
Like most MILL VALLEY 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 $1.20/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 3.6 kW solar system for on-site generation delivered as a rooftop array on the building.
The system now produces roughly 5,292 AC kWh of clean energy each year, an estimated $2,500 in year-one utility offsets, and around $190,000 in net lifetime savings — turning a recurring operating-cost into a long-term, predictable energy hedge.
System spec
System design
- Site
- 115 INEZ PL
MILL VALLEY, CA 94941-2473 - APN
- 043-420-23
- Utility
- PG&E
- Seismic rating
- 1.2
- Irradiance
- 2
- System size
- 3.6 kW DC
- Estimated production
- 5,292 AC kWh / year
- Year-1 utility offset
- $2,500
- Lifetime savings (~30 yr)
- $190,000
- Solar panels
- 8 × Canadian 450 - Bifacial
- Wire loss
- 2.0%
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