The most efficient tilt for photovoltaic panels in Chula Vista, California at a latitude of 32.63°:
Your photovoltaic panels need to be angled facing south.
If you're mounting the photovoltaic panels at a stationary angle, such as on your roof, the most efficient angle is 27.9°.
If you're planning to change the angle of your photovoltaic panels twice per year, the most efficient angle is 9.3° in summer months and 47.7° in winter months.
If you're planning to change the angle of your photovoltaic panels each season, the most efficient angle is 5.7° in summer months and 53° in winter months, and 29.7° in autumn and spring months.