All parameters below are overridable via the Assumptions dataclass.
Electricity rate source: override ($0.334/kWh).
| Parameter | Value |
|---|---|
system_life_years
|
25 |
degradation_rate
|
0.005 |
discount_rate
|
0.06 |
om_cost_per_kw_year
|
$20.0 |
federal_itc
|
0.3 |
electricity_price_override
|
$0.3335 |
electricity_escalation
|
0.025 |
nem_export_ratio
|
0.16468848908878891 |
self_consumption_rate
|
0.4 |
co2_intensity_tons_per_kwh
|
0.0004 |
default_price_per_watt
|
$3.5 |
| Resolved Address | San Francisco, CA 94103 |
| Coordinates | 37.7725, -122.4147 |
| Geocode Source | uszips (medium) |
| PVWatts Station Distance | 540 m |
| Utility | City & County of San Francisco (Utility Company) |
| Rate Schedule | EIA CA 2026-03 (URDB was stale: R-1 Residential Service) |
| Rate Source | eia_live |
| TOU Rate | No |
| Fixed Monthly Charge | $3.60 |
| Export Policy | NEM 3.0 (CA) |
| Avg Export Rate | $0.0549/kWh |
| System Size | 4.5 kW |
| Sizing Method | user_specified |
| System Lifetime | 25 years |
| Panel Degradation | 0.5%/yr |
| Discount Rate | 6.0% |
| O&M Cost | $20 /kW/yr |
| Federal Tax Credit (ITC) | 30% |
| Electricity Rate Used | $0.3335 /kWh |
| Rate Escalation | 2.5%/yr |
| NEM Export Ratio | 0.16 |
| Self-Consumption | 40% |
| Grid CO2 Intensity | 0.0004 t/kWh |
| Default Install Cost | $3.50 /W |