Improving point 6:

Increase your IT capacity by not using mechanical compressors

The available grid power capacity is limited and can often not be increased, or only at great expense. Therefore, it is important to allocate this capacity as much as possible to IT equipment. In practice, only half of the grid capacity of the data centre is available for this. The other half is taken up by UPS, office equipment, lighting and most particularly for cooling. The major culprits are the mechanical compressors, even if they are only used for a few hours per year. In order to guarantee the power supply the sum of the nominal capacities of all the equipment installed may not exceed the available grid capacity.

Aquifer Thermal Energy Storage is a suitable alternative for mechanical compressors. It imposes far smaller demands on grid capacity and releases more capacity for IT equipment.