Solar Panel Angle Guide
Solar Panel Angle in San Jose
locationPage.latitudeLineHere's the optimal solar panel tilt and orientation for maximum energy production.
Year-Round Tilt
35.6°
Summer Tilt
22.3°
Winter Tilt
52.3°
Face
South
180° azimuth
Monthly Optimal Tilts for San Jose
Jan
57.6°
Feb
49.1°
Mar
37.3°
Apr
25.6°
May
17.0°
Jun
13.9°
Jul
17.0°
Aug
25.6°
Sep
37.3°
Oct
49.1°
Nov
57.6°
Dec
60.0°
Ideal: 60.8°
Peak Sun Hours
4.5 hrs/day
Average daily solar insolation
Annual Production (400W panel)
~657 kWh
At 35.6° tilt, facing South
Solar Panel Recommendations for San Jose
- Fixed mount: Set your panels at 35.6° tilt, facing South (180° azimuth).
- Seasonal adjustment: Tilt to 22.3° in summer and 52.3° in winter for up to 15% more annual energy.
- Monthly adjustment: Adjust tilt each month using the table above for maximum year-round production.
Silicon Valley Solar Potential
San José receives approximately 5+ peak sun hours daily with over 260 sunny days per year, benefiting from its South Bay location sheltered from the coastal fog that affects San Francisco. The Mediterranean climate produces warm, dry summers and mild winters with minimal cloud cover, providing excellent year-round solar production. PG&E serves the area with net metering programs.
The Silicon Valley region has one of the highest solar adoption rates in the country. San José's building code requires solar panels on most new residential construction since 2020, reflecting the city's strong commitment to renewable energy. The abundance of tech industry rooftops — large commercial and industrial buildings with flat roofs — has driven substantial commercial solar deployment.
San José's residential housing stock includes many mid-century ranch homes and newer suburban developments. Composite shingle and concrete tile roofs are common. The mild climate means minimal weather-related production losses, and PG&E's high electricity rates provide strong economic incentives for solar adoption with payback periods of 5-8 years.
Orientation Performance
Panel orientation significantly affects energy production. The table below shows relative output compared to true south-facing panels:
| Orientation | Relative Output |
|---|---|
| South | 100% |
| Southeast | 96% |
| Southwest | 96% |
| East | 85-90% |
| West | 85-90% |
| North | 60-75% |
Frequently Asked Questions
Is San José good for solar?
San José averages 5+ peak sun hours with excellent Mediterranean climate conditions. PG&E net metering and California incentives make it one of the strongest solar markets.
How much energy can a 400W panel generate here?
With 4.5 peak sun hours per day, a properly aligned 400W panel could generate approximately 657 kWh per year.
Related Calculators
Solar Panel Tilt Calculator
Calculate optimal tilt for any latitude and month
Solar Panel Azimuth Calculator
Find the exact compass heading for your panels
Get precision alignment with SolarAlign Pro
Use your phone's sensors to align your panels to the exact angle calculated here.Learn more →