The discharge of circuits' parasitic capacitances leads to a high current spike during turning on.

由寄生电容引起的泄放电流在开通时产生很高的电流尖刺。

youdao

The turning on current spike is low.

开通电流尖刺比较低。

youdao

This may also have contributed to a recent spike in the number of Afghan security forces turning their guns on their own Afghan colleagues.

CNN: Shootings by Afghan forces take growing toll on NATO troops

In effect, the end of Earth Hour is actually more detrimental to climate mitigation because simultaneously turning on so much equipment all at once creates a surge current that results in a sudden spike in power demand.

FORBES: Moving Beyond The Symbolism Of Earth Hour