Frontier AI datacentre

Core42 Lake Mariner

Core42 Lake Mariner, owned by Core42 and used by G42, is a frontier AI datacentre in the United States with 58 MW
Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source
of IT power online and 58 MW
Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source
planned by Mar 2026. That is 100% of its planned capacity (calculated), per Epoch AI's register on 14 Oct 2026.

Core42 Lake Mariner among the largest sites in the United States

IT power online now and planned

Core42 Lake Mariner and comparable frontier AI datacentres, largest planned first
Site	Owner	Users	Country	Online now	Planned	Planned date
Microsoft Fairwater Wisconsin	Microsoft	OpenAI, Microsoft	United States	369 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 15 May	2.26 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	13 May 2028
Anthropic-Amazon New Carlisle	Amazon	Anthropic	United States	910 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 3 Jun	1.93 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	17 Mar 2028
OpenAI Stargate New Mexico	Oracle	OpenAI	United States	0 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 22 Jun	1.75 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	31 Dec 2028
Meta Hyperion	Meta	Meta	United States	0 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 19 Apr	1.63 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	1 Jan 2028
Colossus 2	SpaceXAI	Anthropic, Cursor, SpaceXAI	United States	946 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 15 Jun	1.53 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	25 Feb 2027
OpenAI Stargate Shackelford	Oracle	OpenAI	United States	0 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 4 Sep	1.40 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	11 Nov 2028
QTS Cedar Rapids	Not stated	Not stated	United States	0 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 7 May	1.13 GW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	15 Nov 2027
Core42 Lake Mariner	Core42	G42	United States	58 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source est. at 23 Jul	58 MW Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source	31 Mar 2026

Site details

Owner: Core42
Users: G42
Country: United States
IT power online now: 58 MW
Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source
estimate at 23 Jul 2026
Largest planned IT power: 58 MW
Epoch AI Frontier Data Centers (CC BY 4.0)As of 14 Oct 2026Source
Planned date: 31 Mar 2026

Latest construction note

Both buildings still operational according to satellite imagery.

Note from Epoch AI, Frontier Data Centers (epoch.ai/data/data-centers) (CC BY 4.0).

Questions

Who owns Core42 Lake Mariner?

Epoch AI's register lists Core42 as the owner of Core42 Lake Mariner, in the United States.

Who uses Core42 Lake Mariner?

The register lists G42 as the users of the site.

How much power does Core42 Lake Mariner have?

58 MW of IT power was online at the latest estimate in the register, against 58 MW planned, 100% of the plan (calculated). Snapshot of 14 Oct 2026.

When will Core42 Lake Mariner be finished?

Epoch AI's timeline puts the site's largest planned IT power, 58 MW, at Mar 2026. Timelines are estimates and change as construction progresses.

Where does this datacentre data come from?

Epoch AI's Frontier Data Centers register (CC BY 4.0), which estimates each site's IT power over time from satellite imagery, permits and company statements. Figures are estimates, not company specifications.

Updated 14 Oct 2026. Source: Epoch AI, Frontier Data Centers (epoch.ai/data/data-centers) (CC BY 4.0). Estimates, not company specifications. Methodology: Pipeline Tracker. Not investment advice.

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Core42 Lake Mariner