InfrastructureCompute, chips & cloud
Microsoft declines option to more than double its Nscale compute contract in Texas
Microsoft passed on an option worth tens of billions of dollars to expand the compute it rents at Nscale's Barstow, Texas campus. The move came weeks after Microsoft left Nscale's Essex site, as the UK neocloud pursues a US IPO. The existing Texas contract still stands.
From the Financial Times · AI article of November 5, 2026 and cited sources: Microsoft did not take up its option on a 700MW second phase at Barstow, which would have started in late 2027. [1] [3] [4] [5]
SOURCES[1] Microsoft rejects multibillion-dollar AI deal with UK’s… ft.com[3] Reuters via Investing.com: Microsoft will not expand Texas… investing.com[4] Bloomberg: Microsoft Cuts Fourth Nscale Deal With Texas AI… bloomberg.com
AT Pulse research deskPublished · Updated · 5 min read · AI-assisted analysisAI-assisted, not human-edited. Methodology Corrections Who owns this site
- What happened
- Microsoft did not take up its option on a 700MW second phase at Barstow, which would have started in late 2027. [1] [3] [4] [5]
- Original source
- Financial Times · AI article, independent perspective
- Brief by
- AT Pulse research desk AI-assisted; publisher and contact on the desk page
- When
- November 5, 2026 article published
- Covered
- Nov 5 edition
- Evidence
- 10 sources across 10 sites
- 1Microsoft rejects multibillion-dollar AI deal with UK’s…ft.com
- 2The Next Web: Microsoft reportedly rejects option to…thenextweb.com
- 3Reuters via Investing.com: Microsoft will not expand Texas…investing.com
- 4Bloomberg: Microsoft Cuts Fourth Nscale Deal With Texas AI…bloomberg.com
- 5Techzine: Nscale signs mega contract with Microsofttechzine.eu
- 6Techstrong.ai: Nscale files for US IPOtechstrong.ai
Reach: not measured yet
Microsoft did not take up its option on a 700MW second phase at Barstow, which would have started in late 2027. The original deal, about 104,000 Nvidia GB300 GPUs on a roughly 240MW campus starting in Q3 2026, still stands. A source told Reuters that Microsoft decided several months before Nscale's September IPO filing. [1] [3] [4] [5]
This is Microsoft's second step back from Nscale in about three weeks. In October it dropped out as anchor tenant at Loughton, Essex, where it had agreed to rent about 23,000 Vera Rubin chips. It left after the site's grid connection slipped from 2027 to the 2030s. Power availability, not chip supply, decided that deal. [7] [8] [9]
Nscale depends heavily on Microsoft. Its largest customer made up 52% of revenue in the first half of 2026. Microsoft contracts are worth up to $43.8B of $103.4B in contracted value, and payment depends on Nscale delivering on time. Nscale lost $1.02B on $140.6M of revenue in that period. Reported talks on an Anthropic deal of about $45B could reduce this dependence. [2] [6] [9]
Reuters' account says the decision leaves Nscale's roughly $103B disclosed backlog unchanged.
Read the full assessment
For neocloud investors and buyers, signed, delivery-conditional and optional capacity need to be valued separately, and grid energisation dates matter as much as chip allocations.
Executive brief
Microsoft turned down an option worth "tens of billions of dollars" to more than double the compute it rents from Nscale at Barstow, Texas. The news arrives as Nscale prepares a US IPO, and it is the second setback in about three weeks. In October, Microsoft walked away from anchoring Nscale's flagship UK site in Essex (The Next Web). According to the reporting, Microsoft decided months ago, before Nscale filed for its IPO in September. The existing Texas contract stands (Reuters via Investing.com). Nscale's largest customer accounted for 52% of its revenue in the first half of 2026, so any change in Microsoft's demand matters to investors.
What changed and event timeline
Nscale signs Texas deal with Microsoft
About 200,000 Nvidia GB300 GPUs across Europe and the US, about 104,000 of them at a roughly 240MW Texas campus starting Q3 2026. Microsoft gets an option on a 700MW second phase from late 2027 (;).
(exact date undisclosed): Microsoft passes on the expansion
A source told Reuters the decision came several months before the IPO filing ().
Nscale files for NYSE IPO (ticker NSCL)
The filing reports $103.4B in contracted value covering about 461,000 GPUs, with Microsoft contracts worth up to $43.8B ().
Microsoft exits Essex
Microsoft drops out as anchor tenant at Loughton, Essex, after grid power slipped to the 2030s (;).
FT reports the Texas rejection
The feed excerpt says Microsoft declined to more than double the Texas contract (). Reuters says it was unable to verify the report independently ().
Capabilities and access
This story is about infrastructure, not a model release.
Read the full section
This story is about infrastructure, not a model release.
- Texas (Barstow): about 104,000 Nvidia GB300 GPUs on a roughly 240MW campus leased from Ionic Digital. The site could expand to 1.2GW, but the declined 700MW phase was the expansion option (Techzine; Bloomberg).
- Essex: Microsoft had agreed to rent about 23,000 Nvidia Vera Rubin chips there (Computing).
- Narvik, Norway: a separate Aker–Nscale joint venture supplying about 52,000 GB300s to Microsoft (Techzine).
Technical analysis for researchers and developers
- Power is the binding constraint. Texas reached about 240MW by reusing an existing bitcoin-mining site (Bloomberg).
- Microsoft's payments are "up to" $43.8B and depend on delivery and service-availability requirements (Techstrong.ai). Revenue therefore depends on Nscale executing on time.
- The deals span GB300 (Texas, Narvik) and Vera Rubin (Essex). Phased options let a buyer avoid committing to one generation years ahead.
Read the full section
- Power is the binding constraint. Essex failed because of the grid connection, not chips: power expected in 2027 slipped to the early-to-mid 2030s (Computing). Texas reached about 240MW by reusing an existing bitcoin-mining site (Bloomberg).
- The contract structure carries risk. Microsoft's payments are "up to" $43.8B and depend on delivery and service-availability requirements (Techstrong.ai). Revenue therefore depends on Nscale executing on time.
- Hardware generations move fast. The deals span GB300 (Texas, Narvik) and Vera Rubin (Essex). Phased options let a buyer avoid committing to one generation years ahead. That is an inference; the sources do not give Microsoft's reasons.
Claims and evidence
- The Texas option was declined. This rests on the FT's sourcing and a Reuters source; neither company commented (Reuters via Investing.com).
- "No impact" on the $103B total. Reuters' account says the decision does not affect Nscale's roughly $103B disclosed contract value (Reuters via Investing.com).
- Essex was minor. That characterization comes from the CEO of Aker, which owns 23% of Nscale (The Next Web). Aker is not a neutral party.
Read the full section
- The Texas option was declined. This rests on the FT's sourcing and a Reuters source; neither company commented (Reuters via Investing.com).
- "No impact" on the $103B total. Reuters' account says the decision does not affect Nscale's roughly $103B disclosed contract value (Reuters via Investing.com). Unexercised options were presumably never counted in that figure, so the total is unchanged by definition.
- Essex was minor. That characterization comes from the CEO of Aker, which owns 23% of Nscale (The Next Web). Aker is not a neutral party.
- The valuation figures conflict. August reports cited a $14.6B valuation (Dealroom). Later coverage cites a $35B target (Computing).
Context and prior work
Nscale signed a string of Microsoft deals in 2025; Bloomberg called the Texas agreement the fourth (Bloomberg). Microsoft accounts for more than 40% of Nscale's $103B contract value (Computing). Before the IPO, Nscale raised $3.36B and is reportedly in talks on an Anthropic compute deal of about $45B (The Next Web). That deal would reduce its reliance on Microsoft.
Limitations, safety and contested findings
- The reporting does not say why Microsoft declined the option.
- Only its feed excerpt was available.
- Both companies declined to comment outside business hours (Reuters via Investing.com).
Read the full section
- The reporting does not say why Microsoft declined the option.
- Only its feed excerpt was available.
- Both companies declined to comment outside business hours (Reuters via Investing.com).
- Nscale's own filing flags these risks (Techstrong.ai):
- It has not yet secured binding financing for GPUs and data-centre build-out.
- It lost $1.02B in the first half of 2026 on revenue of $140.6M.
- Currency losses totalled $457.1M.
- Cost of revenue was higher than revenue.
Business and practitioner implications
- Backlog is not demand. For neoclouds, separate signed, delivery-conditional and optional capacity.
- Power can decide whether a deal survives. UK grid queues pushed out an anchor tenant (Windows Central).
- Nscale's top customer was 52% of first-half revenue. Whether the reported Anthropic talks become a contract is the main way that dependence could fall.
Read the full section
- Backlog is not demand. For neoclouds, separate signed, delivery-conditional and optional capacity. Options can lapse quietly, and in this case the market learned months after the decision.
- Power can decide whether a deal survives. UK grid queues pushed out an anchor tenant (Windows Central). Buyers should check energisation dates as closely as chip allocations.
- IPO investors face concentration risk. Nscale's top customer was 52% of first-half revenue. Whether the reported Anthropic talks become a contract is the main way that dependence could fall.
The source trail.
Sources (10)
Microsoft rejects multibillion-dollar AI deal with UK’s Nscale
Feed excerpt only.
ft.com