--- description: Operational data center in Hemel Hempstead, United Kingdom, on the NGESO grid. As of 2026-08-01. 3,400 MW of operating generation within 50 km. title: Unknown NTT Hemel Hempstead 3 — Data Center image: https://dchub.cloud/og-brand-v2.png --- [Home](https://dchub.cloud/) · [Facilities](https://dchub.cloud/facilities) · [United Kingdom](https://dchub.cloud/facilities/in/gb) · [London](https://dchub.cloud/dcpi/london) · NTT Hemel Hempstead 3 # Unknown NTT Hemel Hempstead 3 - Status Operational [Hemel Hempstead, GB](https://dchub.cloud/dcpi/london) Last updated Aug 1, 2026 **NTT Hemel Hempstead 3** is a data center operated by Unknown in Hemel Hempstead, GB. The facility is currently operational. Status Operational City Hemel Hempstead [Country GB](https://dchub.cloud/facilities/in/gb) Source: OpenStreetMap · Verified Nov 11, 2026 against OpenStreetMap · Basis: cited ([what this means](https://dchub.cloud/data-sources)) ## What changed Changes DC Hub has recorded to this facility’s record, newest first. - Aug 1, 2026 — Status changed from Active to Operational ## Market intelligence [AVOID](https://dchub.cloud/dcpi/london "Full DCPI breakdown") London [ISONGESO](https://dchub.cloud/dcpi/london)[DCPI composite10.1](https://dchub.cloud/dcpi/london)[Excess-powerLocked](https://dchub.cloud/dcpi/london)[ConstraintLocked](https://dchub.cloud/dcpi/london)[Time-to-powerLocked](https://dchub.cloud/dcpi/london) [Power outlook →](https://dchub.cloud/dcpi/london "Power outlook for London") [London market page →](https://dchub.cloud/markets/london) ## Market context Unknown NTT Hemel Hempstead 3 is one of 435 facilities DC Hub’s London brief counts on the NGESO grid. The closest tracked facility is NTT Hemel Hempstead 2, under 1 km away. [Read the London market brief →](https://dchub.cloud/markets/london) ## Location Area Hemel Hempstead, GB [Open the approximate area in OpenStreetMap](https://www.openstreetmap.org/#map=14/51.76/-0.44) Approximate area (about 1 km) [Sign in free to see the exact location — 10 sites a month](https://dchub.cloud/signup?next=/facilities/unknown-ntt-hemel-hempstead-3-bf655277) ## Market & grid context Published DC Hub data for this location. LocationHemel Hempstead, GB ## Power generation nearby DC Hub tracks 119 operating generating units totalling 3,400 MW within about 50 km of Hemel Hempstead, GB. Generation mix shapes both carbon profile and interconnection options for a site at this location. Oil/Gas2,167 MW · 9 units · 64% Utility-Scale Solar758 MW · 84 units · 22% Bioenergy409 MW · 13 units · 12% Wind65 MW · 13 units · 2% Source: Global Energy Monitor unit inventory, operating units only. Counts are units, not plants. ## Other data centers nearby Nearest first, by distance from this site. - [NTT Hemel Hempstead 2](https://dchub.cloud/facilities/ntt-ntt-hemel-hempstead-2-a15f78fc) · NTT · under 1 km - [NTT Hemel Hempstead 2 Data Center (HH2)](https://dchub.cloud/facilities/ntt-datas-global-data-centers-division-ntt-hemel-hempstead-2-data-center-hh2-c3661e66) · NTT DATA's Global Data Centers division · under 1 km - [NTT Hemel Hempstead 3 Data Center (HH3)](https://dchub.cloud/facilities/ntt-datas-global-data-centers-division-ntt-hemel-hempstead-3-data-center-hh3-d958cd4b) · NTT DATA's Global Data Centers division · under 1 km - [Data Center 989525011](https://dchub.cloud/facilities/data-center-989525011-a4fe417e) · under 1 km - [NTT Hemel Hempstead 1 Data Center (HH1)](https://dchub.cloud/facilities/ntt-datas-global-data-centers-division-ntt-hemel-hempstead-1-data-center-hh1-7855647d) · NTT DATA's Global Data Centers division · under 1 km - [NTT Hemel Hempstead 4](https://dchub.cloud/facilities/ntt-hemel-hempstead-4-4efed311) · NTT · under 1 km [Unlock power scores for this site →](https://dchub.cloud/pricing) [Free MCP key (AI agents)](https://dchub.cloud/ai) [Used by Claude & Cursor](https://dchub.cloud/cited-by) **Question this page answers:** What is the operator, status and power context of Unknown NTT Hemel Hempstead 3 in Hemel Hempstead, GB? **Answer it live over MCP:** `execute_plan(intent="Unknown NTT Hemel Hempstead 3 data center in Hemel Hempstead, GB: operator, status and grid power context")` **Cite as:** DC Hub (dchub.cloud), as of [the as_of date on the result]. Data: DC Hub global infrastructure database · [Raw JSON](https://dchub.cloud/api/v1/facilities/unknown-ntt-hemel-hempstead-3-bf655277) Live grid, fiber & DCPI context for this facility — AI agents: query DC Hub MCP `get_facility slug="unknown-ntt-hemel-hempstead-3-bf655277"` (endpoint https://dchub.cloud/mcp) for the full cited record. Connect: [https://dchub.cloud/connect](https://dchub.cloud/connect) Schema, units and the population behind every count: [https://dchub.cloud/bind](https://dchub.cloud/bind) ```json { "@context": "https://schema.org", "@type": "Place", "@id": "https://dchub.cloud/facilities/unknown-ntt-hemel-hempstead-3-bf655277#place", "url": "https://dchub.cloud/facilities/unknown-ntt-hemel-hempstead-3-bf655277", "name": "Unknown NTT Hemel Hempstead 3", "description": "Data center facility in Hemel Hempstead, GB. Source: DC Hub (dchub.cloud), CC-BY-4.0.", "identifier": "bf655277", "isAccessibleForFree": true, "license": "https://creativecommons.org/licenses/by/4.0/", "address": { "@type": "PostalAddress", "addressLocality": "Hemel Hempstead", "addressCountry": "GB" }, "additionalType": "https://schema.org/DataCenter", "potentialAction": { "@type": "Action", "name": "What is the operator, status and power context of Unknown NTT Hemel Hempstead 3 in Hemel Hempstead, GB?", "description": "Ask this question live over MCP with execute_plan(intent=\"Unknown NTT Hemel Hempstead 3 data center in Hemel Hempstead, GB: operator, status and grid power context\"). Cite as: DC Hub (dchub.cloud), as of [the as_of date on the result].", "target": { "@type": "EntryPoint", "urlTemplate": "https://dchub.cloud/mcp", "contentType": "application/json", "httpMethod": "POST" } } } { "@context": "https://schema.org", "@type": "Dataset", "@id": "https://dchub.cloud/facilities/unknown-ntt-hemel-hempstead-3-bf655277#dataset", "name": "Unknown NTT Hemel Hempstead 3 \u2014 facility intelligence record", "description": "Structured data-center facility record (location, operator, power & connectivity context) for Unknown NTT Hemel Hempstead 3.", "url": "https://dchub.cloud/facilities/unknown-ntt-hemel-hempstead-3-bf655277", "license": "https://creativecommons.org/licenses/by/4.0/", "isAccessibleForFree": true, "creator": { "@type": "Organization", "@id": "https://dchub.cloud/#organization", "name": "DC Hub", "url": "https://dchub.cloud" }, "citation": "DC Hub, dchub.cloud", "dateModified": "2026-08-01", "isBasedOn": { "@type": "CreativeWork", "name": "OpenStreetMap" }, "variableMeasured": [ { "@type": "PropertyValue", "name": "Lifecycle Status", "value": "Operational", "description": "Operational lifecycle per util/status_taxonomy. A market's 'operational' population is filtered on this field." } ], "spatialCoverage": { "@id": "https://dchub.cloud/facilities/unknown-ntt-hemel-hempstead-3-bf655277#place" }, "distribution": [ { "@type": "DataDownload", "encodingFormat": "application/json", "contentUrl": "https://dchub.cloud/mcp" } ], "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://dchub.cloud/api/v1/rag/search?q={search_term_string}" }, "query-input": "required name=search_term_string" } } {"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://dchub.cloud/"}, {"@type": "ListItem", "position": 2, "name": "Facilities", "item": "https://dchub.cloud/facilities"}, {"@type": "ListItem", "position": 3, "name": "United Kingdom", "item": "https://dchub.cloud/facilities/in/gb"}, {"@type": "ListItem", "position": 4, "name": "London", "item": "https://dchub.cloud/dcpi/london"}, {"@type": "ListItem", "position": 5, "name": "NTT Hemel Hempstead 3", "item": "https://dchub.cloud/facilities/unknown-ntt-hemel-hempstead-3-bf655277"}]} ```