Telehouse TH3 Paris Magny Campus, Magny-les-Hameaux (1 rue Pablo Picasso)

Name: Telehouse TH3 Paris Magny Campus, Magny-les-Hameaux (1 rue Pablo Picasso)
Address: FR

Announced Operational

France · 2 projects · Last reported 2026-10-20

Summary

Telehouse TH3 Paris Magny — campus data-centre operations (23 MW available after the new 3 MW AI module)

Telehouse's press flash of 20 October 2026 reports the commissioning of a new 3 MW module for AI infrastructure on its TH3 Paris Magny campus, describes the new capacity as now operational and states that the extension brings the campus's available power to 23 MW. The campus is therefore operating as of 20 October 2026. The module's commissioning day is not given, 23 MW is available power rather than measured IT load, and the further data-centre building under environmental-authorisation review is not part of this status. evidence

Telehouse France · published 2026-10-20

Telehouse TH3 Paris Magny — new P34 data-centre building (extension under environmental-authorisation and building-permit review, PC 078 356 26 E0004)

The MRAe Île-de-France note no. 021434/A P of 18 August 2026 records that the authority was referred on 18 June 2026, within an ICPE environmental-authorisation procedure, on Telehouse's project to extend the TH3 data centre at Magny-les-Hameaux and its impact study, and that no opinion was issued within two months. The applicant's impact-study summary in the same portal dossier describes the project as a new data-centre building, P34, with its fuel storage and generator containers; the later note no. 021903/A P records a referral of 6 August 2026 within a building-permit procedure and is filed on the portal in dossier 27221 'PC 78356 26 E0004 extension du nouveau datacenter - création du module P34'. The P34 building is therefore announced as of 18 August 2026. No environmental authorisation, building permit or physical work is established. evidence

Mission régionale d'autorité environnementale (MRAe) Île-de-France, IGEDD; published on the Ministère de la Transition écologique, portail de l'évaluation environnementale · published 2026-08-18

Location

The interactive map needs JavaScript. Display anchor: 48.72629, 2.07816 (Point locator, WGS 84).

View location: OpenStreetMap · Google Maps · Bing aerial · Copernicus Browser

Campus reference; individual project footprints are not mapped.

Projects (2)

Telehouse TH3 Paris Magny — campus data-centre operations (23 MW available after the new 3 MW AI module)

Operational last observed as of 2026-10-20 · Authoritative status update

Telehouse's facility page for Telehouse Paris Magny-Les-Hameaux (TH3), described as a hyperscale data centre at the gates of Paris linked to TH2 Paris by Telehouse Metro Connect, gives the site address as 1, rue Pablo Picasso, 78114 Magny-les-Hameaux, France, and lists colocation (SFM and DFM), 24/7 on-site technical teams, generators, fuel tanks and cooling plant. evidence

Telehouse France · published 2020-05-07

The national planning-authorisation register lists five building permits to TELEHOUSE INT CORPORATION EUROPE LIMITED (NAF 63.11Z, data processing and hosting) for 1 rue Pablo Picasso, Magny-les-Hameaux, cadastral parcel AX 86, land area 65,969 m2: PC 078 356 18 E0001 (authorised 16 March 2018, completion declared 25 September 2018; 130 m2 industrial-class floor), PC 078 356 18 E0005 (authorised 29 June 2018, no opening of works recorded; 7,618 m2), PC 078 356 21 E0039 (authorised 18 March 2022, works opened 15 June 2022, completion declared 2 January 2024; 6,555 m2 industrial-class floor), PC 078 356 23 E0003 (authorised 31 May 2023, works opened 23 October 2023, completion declared 19 February 2025; 4,544 m2) and PC 078 356 24 E0017 (authorised 3 February 2025, works opened 3 March 2025, state 'commencé'; 4,600 m2). evidence

Service des données et études statistiques (SDES), Ministère de la Transition écologique · published 2026-09-29

The geocoder returns the housenumber 1 Rue Pablo Picasso, 78114 Magny-les-Hameaux (BAN id 78356_0411_00001) at WGS84 2.079394, 48.726529, which lies inside cadastral parcel AX 86. evidence

Institut national de l'information géographique et forestière (IGN), Géoplateforme; Base Adresse Nationale · publication date not stated

The national register lists TELEHOUSE EUROPE at ZAC de Gomberville, 1 rue Pablo Picasso, Magny-les-Hameaux, under the authorisation regime (IED, national inspection priority), state 'En exploitation avec titre', with a 2009 prefectoral authorisation for a computer centre, a 19 May 2022 complementary order for a new building, a 18 December 2023 environmental authorisation and 62 MW of combustion plant (heading 3110). It records inspections on 8 July 2025, 17 September 2025 and 4 September 2026 (no report published for the last). Its register point (2.079928, 48.726635) lies inside parcel AX 86. evidence

Ministère de la Transition écologique, Géorisques · publication date not stated

The official online register of the public consultation on Telehouse's application for an environmental authorisation to develop a new data-centre building at 1 rue Pablo Picasso, Magny-les-Hameaux, states that the consultation ran from Thursday 18 June 2026 to Friday 18 September 2026 and that the site closed on 18 September 2026 at 23:59. It identifies the developer as Telehouse; no decision is recorded. evidence

Préfecture des Yvelines / DRIEAT unité départementale des Yvelines, via Registre Dématérialisé · publication date not stated

Companies

Operator: Telehouse (Telehouse France) (current) evidence

Source and location review

Status source

Telehouse France flash presse: Telehouse renforce les capacités IA de son campus TH3 Paris Magny avec le déploiement d'une nouvelle infrastructure dédiée à l'intelligence artificielle et à l'interconnexion evidence row
Telehouse France · published 2026-10-20 · Company disclosure

Locator

Campus locator · Official source · official_cadastral_parcel_centroid_of_operator_campus_named_in_building_permits evidence

Source checks

Not reviewed against imagery not_reviewed
No imagery review is recorded for this project. Its status rests only on the dated authoritative source. · no independent imagery verification

Status age at review: 7 days before the data update on 2026-10-27

Telehouse TH3 Paris Magny — new P34 data-centre building (extension under environmental-authorisation and building-permit review, PC 078 356 26 E0004)

Announced last observed as of 2026-08-18 · Project announcement

The note, no. 021903/A P, states that the MRAe Île-de-France was referred on 6 August 2026 for an opinion on the same TH3 extension project by Telehouse and its impact study within a building-permit procedure, and that no formal opinion was produced within two months, the file having been the subject of the 2023 MRAe opinion and of the first note of absence of observation of 18 August 2026 (021434/A P). The portal files it in dossier 27221 'PC 78356 26 E0004 extension du nouveau datacenter - création du module P34', which identifies the building-permit application as PC 078 356 26 E0004 for building (module) P34. evidence

The applicant's non-technical summary states that the application, by TELEHOUSE International Corporation Of Europe LTD, concerns the development of a new data-centre building named P34 on the existing TH3 data centre at 1 rue Pablo Picasso, Magny-les-Hameaux, together with associated plant (fuel unloading area and buried tanks, outdoor generator containers), lithium-ion batteries in the IT rooms of building P5, a new IT room E08 in a vacant space of building E, rooftop photovoltaics on building A and the regularisation of technical data on equipment already authorised. The site is a single cadastral parcel, AX 86, of 65,969 m2 owned by Telehouse; its existing southern part (Magny I, 13 buildings) and northern part (Magny II, buildings P0, P1, P2 and P5) operate independently; with the project the built footprint rises from about 16,100 to 19,450 m2 without changing the property limits. The site access point is given in Lambert-93 as X 632,324 m, Y 6,847,784 m. About 50 people are expected on site during the P34 construction phase. evidence

Telehouse International Corporation of Europe Ltd (applicant document); published on the Ministère de la Transition écologique, portail de l'évaluation environnementale · publication date not stated

The sitemap lists dossier 24840 'création d'un centre de données' (14 August 2026) with the SNC PARAY DC impact study, its non-technical note and the MRAe opinion on the Paray-Vieille-Poste data centre (documents 417113-417115); dossier 26737 'extension datacenter TH3' (18 August 2026) with the TH3 P34 impact study, its non-technical summary and the first MRAe note of absence of observation (documents 418225-418227); and dossier 27221 'PC 78356 26 E0004 extension du nouveau datacenter - création du module P34' (22 September 2026) with two permit application forms and the second MRAe note (documents 443382-443384). No later document is listed in these dossiers. evidence

Ministère de la Transition écologique, portail de l'évaluation environnementale · publication date not stated

The official online register of the public consultation on Telehouse's application for an environmental authorisation to develop a new data-centre building at 1 rue Pablo Picasso, Magny-les-Hameaux, states that the consultation ran from Thursday 18 June 2026 to Friday 18 September 2026 and that the site closed on 18 September 2026 at 23:59. No decision is recorded. The commissioners named on the page are not copied. evidence

Préfecture des Yvelines / DRIEAT unité départementale des Yvelines, via Registre Dématérialisé · publication date not stated

Companies

Owner: Telehouse International Corporation of Europe Ltd (Telehouse) (current) evidence
Operator: Telehouse International Corporation of Europe Ltd (Telehouse) (intended) evidence

Source and location review

Status source

MRAe Île-de-France information note no. 021434/A P of 18 August 2026 on the absence of observation on the project to extend data centre TH3 at Magny-les-Hameaux (78) (ICPE environmental-authorisation procedure) evidence row
Mission régionale d'autorité environnementale (MRAe) Île-de-France, IGEDD; published on the Ministère de la Transition écologique, portail de l'évaluation environnementale · published 2026-08-18 · Government record

Locator

Campus locator · Official source · official_cadastral_parcel_centroid_of_operator_campus_named_in_building_permits evidence

Source checks

Not reviewed against imagery not_reviewed
No imagery review is recorded for this project. Its status rests only on the dated authoritative source. · no independent imagery verification

Status age at review: 70 days before the data update on 2026-10-27

Location details

Coordinates: 48.72629, 2.07816
Geometry licence: no-open-redistribution-license-asserted
Use scope: Campus locator
Scope class: official_cadastral_parcel_centroid_of_operator_campus_named_in_building_permits
Authority: Official source
Source entity: Campus
Method: ign_api_carto_cadastre_parcel_78356000AX0086_area_centroid_computed_in_epsg2154_returned_to_wgs84
Derivation: direct_geometry
Precision scope: Centroid of cadastral parcel AX 86 in Magny-les-Hameaux (6.6 ha, about 372 by 311 m), the land of all five Telehouse building permits (2018 to 2025) at 1 rue Pablo Picasso. It locates the TH3 campus parcel, not any individual building or the new 3 MW module.
Horizontal uncertainty: Not reported
The cadastral service publishes no positional accuracy; the point is the centroid of a 6.6 ha campus parcel whose vertices lie up to 205 m away, and the positions of the individual buildings and of the new module are not published.
Geometry evidence: 928ea66a

A locator places the site on the map. It is not a building footprint, a construction extent or a surveyed boundary unless the use scope is an official boundary, and even then it is a parcel or permit boundary.

Evidence

Sources are linked, not redistributed; each keeps its own terms. An archived copy is a lookup for the Wayback Machine capture nearest the retrieval date and may be unavailable or differ from what was reviewed. Each hash states what it covers; imported factual records are not publisher-page captures.

Evidence for Telehouse TH3 Paris Magny Campus, Magny-les-Hameaux (1 rue Pablo Picasso)
Title	Publisher	Roles	Published	Retrieved	Licence	Attribution	Content hash (SHA-256)
Consultation du public, Magny-les-Hameaux: demande d'autorisation environnementale pour le développement d'un nouveau bâtiment de datacenter présentée par la société Telehouse (registre dématérialisé 7391) Archived copy	Préfecture des Yvelines / DRIEAT unité départementale des Yvelines, via Registre Dématérialisé Government record	Site and project identity	not stated	2026-10-22	all-rights-reserved	Registre Dématérialisé, for the Préfecture des Yvelines	`2cc8898755504d18a810d5c5b91ee0abb3df57f43aabb8326bb545aa24ad5423` Retained source material; see source provenance
Environmental-assessment portal sitemap, Île-de-France region (public dossiers and their documents) Archived copy	Ministère de la Transition écologique, portail de l'évaluation environnementale Government record	Site and project identity	not stated	2026-10-27	no-open-redistribution-license-asserted	Ministère de la Transition écologique, portail de l'évaluation environnementale	`d465d6f160bdc42926f25ea576cf2f5c37142777e482e784e833d26f11381132` Retained source material; see source provenance
Géorisques installations-classées API, commune 78356 Magny-les-Hameaux: record 'TELEHOUSE EUROPE' Archived copy	Ministère de la Transition écologique, Géorisques Government record	Site and project identity	not stated	2026-10-22	etalab-2.0	Géorisques	`4029dffccc4d9385c99a3b335d3c8a005562745b172fd943f9b156e52ecd906a` Retained source material; see source provenance
IGN API Carto cadastre: parcel 78356000AX0086 (Magny-les-Hameaux, section AX, no. 86) Archived copy	Institut national de l'information géographique et forestière (IGN) API Carto; DGFiP cadastral plan Government record	Geometry	not stated	2026-10-22	no-open-redistribution-license-asserted	IGN API Carto / DGFiP cadastre	`097f84ad7e26fa1e224bf1079e7ab23d74c5535c605c4e55229ece9d5534b7cb` Retained source material; see source provenance
IGN Géoplateforme geocoder (BAN): 1 rue Pablo Picasso, 78114 Magny-les-Hameaux Archived copy	Institut national de l'information géographique et forestière (IGN), Géoplateforme; Base Adresse Nationale Government record	Site and project identity	not stated	2026-10-22	etalab-2.0	IGN Géoplateforme / Base Adresse Nationale	`faa356c97025a47d8c4eb611525dd7b3d8ba10c89a23d999ab86c538f4b0c805` Retained source material; see source provenance
MRAe Île-de-France information note no. 021434/A P of 18 August 2026 on the absence of observation on the project to extend data centre TH3 at Magny-les-Hameaux (78) (ICPE environmental-authorisation procedure) Archived copy	Mission régionale d'autorité environnementale (MRAe) Île-de-France, IGEDD; published on the Ministère de la Transition écologique, portail de l'évaluation environnementale Government record	Project announcement	2026-08-18	2026-10-27	etalab-2.0	MRAe Île-de-France (IGEDD)	`45c05fdfbeeca7969cd17812f643aa61518ebeeab0a36dd8b72cf7c19946323c` Retained source material; see source provenance
MRAe Île-de-France information note no. 021903/A P (dated 6 October 2026) on the absence of observation on the project to extend data centre TH3 at Magny-les-Hameaux (78) (building-permit procedure) Archived copy	Mission régionale d'autorité environnementale (MRAe) Île-de-France, IGEDD; published on the Ministère de la Transition écologique, portail de l'évaluation environnementale Government record	Site and project identity	not stated	2026-10-27	etalab-2.0	MRAe Île-de-France (IGEDD)	`975f1cb4917dca3dad8cd5d1b1d4e9e92c28942156c0b7c31e5b420470ef219d` Retained source material; see source provenance
Non-technical summary of the impact study (Pièce n°6, March 2026), environmental-authorisation application for the extension of data centre TH3 - building P34, Magny-les-Hameaux, published with dossier 26737 on the environmental-assessment portal Archived copy	Telehouse International Corporation of Europe Ltd (applicant document); published on the Ministère de la Transition écologique, portail de l'évaluation environnementale Environmental assessment document	Site and project identity, Operator claim, Owner claim	not stated	2026-10-27	all-rights-reserved	Telehouse	`cc4b06aa91dea538ce53ec23760f6109875569c5dc49daf2a5bea191fe090474` Retained source material; see source provenance
SDES Sitadel open base, 'Liste des autorisations d'urbanisme créant des locaux non résidentiels' (millésime 2026-09), commune 78356 Magny-les-Hameaux Archived copy	Service des données et études statistiques (SDES), Ministère de la Transition écologique Government record	Site and project identity	2026-09-29	2026-10-22	etalab-2.0	SDES, base Sitadel des permis de construire et autres autorisations d'urbanisme	`6ce348994b49f170d52f65b5a449f6c25de3607c12a168ce80fb135344ec058b` Retained source material; see source provenance
Telehouse France data-centre page: Telehouse Paris Magny-Les-Hameaux (TH3) Archived copy	Telehouse France Company disclosure	Site and project identity	2020-05-07	2026-10-22	all-rights-reserved	Telehouse	`d2afa336de13a4a68f10bb0668faa75f243a92e7d3327df183fd47af80cda707` Retained source material; see source provenance
Telehouse France flash presse: Telehouse renforce les capacités IA de son campus TH3 Paris Magny avec le déploiement d'une nouvelle infrastructure dédiée à l'intelligence artificielle et à l'interconnexion Archived copy	Telehouse France Company disclosure	Physical status, Operator claim	2026-10-20	2026-10-22	all-rights-reserved	Telehouse	`9eed259a7ef52396062caa7374b5e43fd1f9dd7cfaa396edb770d9afcd353ffe` Retained source material; see source provenance

Cite this site

Kyars, K. (2026). Telehouse TH3 Paris Magny Campus, Magny-les-Hameaux (1 rue Pablo Picasso) [site vcc-site-0d9ae5c2942c7b4ce1ae]. In Data Center Atlas (2026-10-27) [Data set]. https://kiankyars.github.io/datacenter-atlas/sites/vcc-site-0d9ae5c2942c7b4ce1ae/

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