Moving plate freezing to the sunny hours

A eutectic plate freezing cycle runs 15-21 hours, longer than a daylight window, so part of the freezing can move into the sun but not all of it.

14 June 2025Updated 28 September 2026

Short answer

Partly. GEBHARDT gives 15-21 hours for freezing a plate, so a cycle outlasts a solar window. Move the start time using your own generation and freezer meter data, and keep grid supply as the fallback for cloudy days and winter.

Part of the freezing can move into daytime but not all of it, because a cycle runs longer than a solar window. GEBHARDT's eutectic plate figures are:

Eutectic plate	Value
Freezing time	15-21 hours
Example	-21 °C melting point, frozen at -26 °C: 19 hours
Freezing temperature	At least 5 °C below the melting point

A cycle started at 08:00 ends at 03:00 the next day; with sun from 09:00 to 17:00, 8 of the 19 hours fall in daylight. For the rest, put the freezer and generation meters on the same timeline and shift the start time.

A frozen plate stores cold, so no electricity storage is needed, but on cloudy days and in winter the plan returns to the grid. Two sets of plates make the cycle flexible: one is on the road while the other freezes.