Should You Move Your Panels Seasonally? UK Solar Guide

Q: Is It Worth the Effort?

| Strategy | Annual kWh (800W, Midlands) | vs fixed at 35° | |----------|---------------------------|------------------| | Fixed at 35° (year-round) | 850 | — | | 3× seasonal adjustment | 935-960 | +10-13% |

Adjusting panel angle and position between summer and winter can boost annual output by 10-15%. Here's how.

The Case for Seasonal Adjustment

The optimal panel angle changes with the seasons because the sun's height changes:

Season	Optimal tilt (52°N latitude)	Sun height at noon
Summer (Jun)	15-25°	62°
Spring/Autumn (Mar/Sep)	35-40°	38°
Winter (Dec)	55-65°	15°

A fixed panel at 35° tilt is a compromise. Adjusting seasonally can boost annual output by 10-15%.

Practical Adjustment Schedule

You don't need to adjust monthly. Three changes per year capture most of the benefit:

When	Set tilt to	Reason
March	30°	Spring sun getting higher
June	20°	Summer sun at peak height
October	55°	Autumn/winter sun low on horizon

How to Adjust

If using adjustable tilt brackets:

Loosen the tilt adjustment bolts (usually wing nuts or quick-release)
Adjust the panel to the desired angle
Use a phone inclinometer app to verify the angle
Retighten the bolts firmly — panels can catch wind

Is It Worth the Effort?

Strategy	Annual kWh (800W, Midlands)	vs fixed at 35°
Fixed at 35° (year-round)	850	—
3× seasonal adjustment	935-960	+10-13%
Monthly adjustment	960-980	+13-15%

Three seasonal adjustments add roughly 85-110 kWh/year — worth £20-27 in extra savings. Monthly adjustment adds little beyond the three-times approach.

What if I can't adjust my mounts?

Fixed mounts at 30-35° are the best year-round compromise. You'll lose ~10% compared to seasonal adjustment — not worth worrying about.

Does the EcoFlow STREAM have adjustable mounts?

The STREAM kit includes adjustable mounting hardware for different scenarios. Check the specific adjustment range for your mount type.