Solar Panel Angles for Tacoma, Washington

The most efficient tilt for photovoltaic panels in Tacoma, Washington at a latitude of 47.24°:

Orientation

Your photovoltaic panels need to be angled facing south.

Fixed tilt

If you're mounting the photovoltaic panels at a stationary angle, such as on your roof, the most efficient angle is 39°.

2-Season tilt

If you're planning to change the angle of your photovoltaic panels twice per year, the most efficient angle is 22.9° in summer months and 60.5° in winter months.

4-Season tilt

If you're planning to change the angle of your photovoltaic panels each season, the most efficient angle is 19.2° in summer months and 66° in winter months, and 44° in autumn and spring months.