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Amazon Web Services, Plot 3 Maylands Avenue

Amazon Web Services

Hemel Hempstead, East of EnglandProposed

A purpose-built data centre for tape-based long-term storage proposed by Amazon Data Services UK Limited at Plot 3, Maylands Avenue, Hemel Hempstead. Submitted documents describe roof-level plant, an HVO-fuelled standby generator compound, chilled-water cooling and rooftop solar. No decision has been published.

Key facts

Operator / developer
Amazon Web Services
Location
Plot 3, Maylands Avenue, Hemel Hempstead, HP2 4FQ, East of England, United Kingdom
Status
Proposed
Facility type
Data centre
AI relevance
Not stated

Power & grid

Power
No IT load, grid connection or standby generator capacity figure was found in the submitted documents retrieved. None is recorded.
Backup fuel
HVO
On-site generation
One emergency generator, expected to run on HVO (renewable diesel); kiosk substation.

Planning

Green belt
No
Land area
0.6 ha

Benefits vs drawbacks

Benefits

  • Small brownfield plot (0.6ha) in Maylands Business ParkSource
  • Closed-loop chilled water with no potable water use; free cooling for more than 90% of the yearSource
  • Single emergency generator on HVOSource

Drawbacks

  • No jobs, power or heat reuse details publishedSource

Sources

Last verified

27 September 2026

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