Microsoft Cancels 23,040 GPUs at Nscale's Loughton Site as the Grid Date Slips to the 2030s

Microsoft terminated its contract to rent 23,040 Nvidia GB300 GPUs at Nscale's data center in Loughton, Essex, and Reuters reported on Oct. 19, 2026 that power connection delays pushed the site's expected grid supply into the 2030s ². The site was due to open in early 2027 with 50 megawatts. On Oct. 18 the Telegraph broke the story ³. Nscale confirmed the termination through a spokesperson ¹.

A 2027 start and a 2030s grid date sit at least three years apart, by this desk's arithmetic, since 2030 is the earliest year the decade offers. Microsoft was the anchor customer for what Nscale pitched as the UK's largest sovereign AI datacenter ³. What should a reader take from one cancelled site?

Loughton takes 0.3 points off the energy ledger

The move

The data5 rows · sources

Measure	Value
Reading before this day	3.4
This piece's move	−0.3 (Energy, reported)
Band for reported evidence	0.3 to 0.8
Reading after the day	3.1
Distance to 100	96.9

What did Microsoft end at Loughton?

Microsoft announced the Loughton machine on Sept. 16, 2025, inside a $30 billion (£22 billion) UK commitment timed to Donald Trump's second state visit ⁵. The plan put 23,040 GB300 GPUs in a 50-megawatt building that could grow to 90 megawatts, with first chips expected in early 2027 ³. Divide 50 megawatts by 23,040 GPUs and each GPU carries about 2.2 kilowatts of the site's power, networking and cooling included, by this desk's arithmetic.

Loughton had energized zero megawatts. In March it emerged that the plot still served as a scaffolding yard, and Nscale has since cleared the land ³. The ledger therefore loses a plan, and the plan carried 50 megawatts of the energy component's future.

A Microsoft spokesperson described the decision on Monday, Oct. 19. "This decision relates to a single site," the spokesperson told Reuters, adding that Microsoft remains committed to its partnership with Nscale ². Read the sentence for its noun: "site" confines the exit to one address and leaves the contract total alone. Microsoft declined to comment to the Telegraph and has yet to state a reason ⁵.

Both companies keep the money private. Nscale has yet to say what it spent on Loughton, whether termination payments apply or what protections its contract held ¹. The Register adds that the exit leaves Nscale lacking a publicly announced customer for the site ³.

What the record shows about Loughton, and what stays open

The record

The data8 rows · sources

Column	Item	Source
On the record	Microsoft terminated the Loughton contract; Nscale confirmed it	[1]
On the record	Plan: 23,040 GB300 GPUs, 50 MW, first chips in early 2027	[3]
On the record	Microsoft: "This decision relates to a single site"	[2]
On the record	Reuters: grid officials put supply in the 2030s	[2]
Claimed or open	Microsoft has yet to state a reason	[5]
Claimed or open	Loughton spend and any termination payment	[1]
Claimed or open	A replacement customer or alternative power	[3]
Claimed or open	UK Power Networks declined to discuss the site	[3]

Why does a 2030s grid date end a 2027 contract?

Reuters ties the exit to the grid in its first sentence: Microsoft pulled out "after power connection delays pushed its expected supply date into the 2030s," and grid connection queues have delayed British data centre projects by as long as 13 years ². The Guardian reported in September that UK Power Networks warned Nscale the capacity might arrive only in the early to mid-2030s ³.

UK Power Networks declined to discuss one customer, citing Section 105 of the Utilities Act, and then described the general case. "However, in general, many datacenters, whilst they can connect to our distribution network, are awaiting works on the national transmission network which we do not own," a spokesperson told The Register ³. The operator is saying that the distribution wires it owns are ready and the transmission upgrades upstream belong to someone else.

The queue those upgrades serve is long. Demand for new UK grid connections rose from 41 gigawatts to 125 gigawatts in under a year, and data centers account for at least 80 gigawatts of it ³. The Financial Times counted 315 data center projects waiting, asking for 73 gigawatts combined, which is about 1.6 times the UK's peak electricity demand of roughly 45 gigawatts ⁴. Some of those projects will stay unbuilt, and some are unrelated to AI.

Nscale has lost a second British partner this year. OpenAI paused Stargate UK, a venture pairing Nscale, OpenAI and Nvidia, in April, citing high energy costs and regulatory uncertainty ⁵. Google has reportedly agreed to take capacity at a separate Nscale site in west London, and Nscale reportedly discussed on-site fuel cells with Bloom Energy to avoid the grid.

Analysts read the exit as a power problem and leave demand out of the cause. Alex Cordovil, research director at Dell'Oro Group, said the project should be read as a grid schedule problem instead of a sign that AI demand is weakening ¹. He put the cost of a late connection plainly. "Capacity that isn't energized generates no revenue, but the costs keep running," Cordovil said. Read for its verb, "keep running": the bill continues on a clock that the utility sets.

Who is tied to Nscale, and who has stepped back

Who connects

The data6 rows · sources

From	Link	To	Source
Microsoft	terminated Loughton	Nscale	[2]
UK Power Networks	grid in 2030s	Nscale	[3]
OpenAI	paused Stargate UK	Nscale	[5]
Anthropic	up to $44.6 billion	Nscale	[1]
Google	reportedly takes London capacity	Nscale	[5]
Nvidia	backs, supplies GB300s	Nscale	[2]

Who argues the exit is large, and who argues it is small?

Neil Osnato, founder of Persistence Analytics Group, argued for the larger reading. "It's that capital can become committed long before the physical and financial assumptions supporting its recovery are proven," Osnato said, having first located the problem somewhere other than a drop in AI demand ¹. His point concerns order of operations: the money, the GPU contract and the customer arrive first, and the electricity date arrives last.

Nscale made the smaller case, in a statement quoted by The Register. "We remain committed to both the Loughton project and the UK and we are exploring alternative power sources for the site, in addition to other expansion sites in the UK. Our relationship with Microsoft remains strong and long-term, and this unfortunate London-wide grid issue has no impact on our other contracts," Nscale said ³. The adjective "London-wide" moves the cause from Nscale's planning to the grid, which is also what Osnato's argument implies.

Owen Rogers, senior research director of cloud computing at Uptime Institute Intelligence, supplied the financial version of the same worry. "Backlog only turns into cash if the neocloud can actually build and power the capacity on time," Rogers said ¹. A neocloud is a company that rents GPU capacity to a few large customers, and Nscale fits the definition: Microsoft and Anthropic account for about 85 percent of its contracts ⁶.

Neil Osnato sees committed capital; Nscale sees one London grid issue

Both sides

The data2 rows · sources

Side	Who	Claim	Source
For	Neil Osnato	Capital can become committed long before the physical and financial assumptions supporting its recovery are proven.	[1]
Against	Nscale	This unfortunate London-wide grid issue has no impact on our other contracts.	[3]

Why does the step stop at 0.3?

Reported evidence earns a step between 0.3 and 0.8, and a down-move sizes the same way. Reuters, the Telegraph and a confirmation from Nscale make this reported evidence rather than a filing. Four facts hold the step at the floor.

First, Microsoft calls the decision a single-site matter. "A hyperscaler can absorb one delayed site across a large, diversified fleet and balance sheet," Cordovil said, a point about who carries the cost ¹. Second, Loughton energized zero megawatts, so the reading loses an expectation and keeps every verified megawatt. Third, the reason arrives through reporting, since UK Power Networks declined to discuss the site and the 2030s date traces to the Guardian's September story and Reuters' sources ².

Fourth, Loughton is a small part of Nscale's book. Its IPO filing reports $103.4 billion in active and contracted value as of Aug. 31, 2026, against $2.6 billion in active contracts, and Microsoft's agreements run up to $43.8 billion through December 2033, subject to delivery requirements ¹. The filing leaves open how much of the Microsoft total belongs to Loughton. Active contracts are 2.5 percent of the total, by this desk's arithmetic, so most of the backlog still waits on buildings.

The Loughton exit points the same direction as other Nscale delivery news. Bloomberg reported that Nscale's flagship Norway site runs six months behind schedule, with 6.4 megawatts of a planned 30 operating, or 21 percent of the plan ⁶. Nscale reported a net loss of $1 billion on $141 million of revenue in the first half of 2026 ⁷. As of its prospectus, Nscale was still seeking binding financing for its Anthropic agreements ¹. Those facts support a down-step for Nscale, and the ledger counts the energy lost at the Loughton site only.

On this piece the reading moves from 3.4 to 3.1, and the energy component falls by 0.3.

Nscale's backlog is $103.4 billion; $2.6 billion is active

Compared

The data4 rows · sources

Unit: $ billion

Item	Value	Source
Active and contracted Aug. 31, 2026	103.4	[1]
Anthropic agreements up to	44.6	[1]
Microsoft agreements up to, through 2033	43.8	[1]
Active contracts Aug. 31, 2026	2.6	[1]

By the numbers

• 23,040 GPUs: the Nvidia GB300 count Microsoft was to rent at Loughton, drawing 50 megawatts and expandable to 90 ³.
• 2030s: the grid supply date grid officials gave Nscale, against an early-2027 start ².
• 315 projects: UK data centers waiting for grid connections, asking for 73 gigawatts against a 45-gigawatt peak ⁴.
• $2.6 billion: Nscale's active contract value on Aug. 31, 2026, beside $103.4 billion in active and contracted value ¹.
• Up to $43.8 billion: payments in Microsoft's agreements with Nscale through December 2033, subject to delivery ¹.
• 85 percent: the share of Nscale's contracts held by Microsoft and Anthropic together ⁶.
• 6.4 of 30 megawatts: the capacity running at Nscale's Norway site, six months behind schedule ⁶.

What to watch

A second terminated Microsoft site would turn a single-site decision into a pattern, and Microsoft's next quarterly report will show whether capacity commitments moved. Either a named replacement customer for Loughton or a Bloom Energy fuel-cell contract would show that on-site power can substitute for the grid and would earn the energy component a step back up. Nscale's IPO pricing will show how the market values a backlog that includes unpowered sites. UK Power Networks publishing a firm connection date for any Essex data center would settle the 2030s question, and a connection date inside 2028 would reverse this step.