Storage should consume power

In real life, storage are automatized, run by robots and machines, and they consumes power.
Storage I should consume 1Kw
Storage II Should consume 3Kw
Storage III Should consume 5Kw

They already do:
Tier 1 consumes 4 kW - 1 kW per 45 items
Tier 2 consumes 8 kW - 1 kW per 45 items
Tier 3 consumes 16 kW - 1 kW per 135 items
Tier 4 consumes 24 kW - 1 kW per 180 items
So scaling up makes sense in terms of power consumed per items, which also makes sense because of economy of scale and that a volume of a cube increases ^3 but the surface area (heating/cooling of a building) ^2.

Storages already consume power when in use