Open Access

Table 5

Expected peak energy demands for AtLAST.

Item Value Units
Instrument electronics 600 kW
Cryogenic demand of Nasmyth insts 160 × 2 kW
Cryogenic demand of Cassegrain insts 40 × 4 kW
Peak AZ drive demand 1100 kW
Peak EL drive demand 600 kW
Heating, ventilation, and air conditioning 200 kW

Total peak demand ≈ 2980 kW

Notes. Rough order of magnitude expected peak energy demands for AtLAST. Of this, up to 85% of the 1.7 MW peak drive will be recoverable, while AtLAST’s energy recovery system is expected to also be able to shave the peak demand from the drives (see Kiselev et al. 2024).

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