6,466 source records across 50 states and Washington, DC. Records include proposals, existing facilities, regulatory references, expansions and possible duplicates. Reported status and capacity are source claims, not certified current operation or measured demand.
Snapshot: 2026-10-28. Review the linked evidence before relying on a claim. Related records and expansions must not be counted as additional facilities.
Waltham, MA · FirstLight Fiber, Inc.
Reported status: operational
Exact location not published.
Original source · 2026-06-17
Review note: ColoSpace Waltham vendor label needs current FirstLight/other operator status and exact shared building check.
research-final:MA:fcf6ff42141754b18d33Waltham, MA · Csquare
Reported status: operational
Reported capacity: 38.2 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-06-15
Review note: Csquare current Boston locations lists Waltham BOS1, separate site from Watertown BOS4; marketed combined utility power is not operating load.
Csquare current Boston locations lists Waltham BOS1, separate site from Watertown BOS4; marketed combined utility power is not operating load. Evidence
Waltham, MA · Equinix
Reported status: operational
Exact location not published.
Original source · 2026-09-15
Review note: Legacy Equinix BO1 Waltham listing requires current operator facility confirmation; BO2 Billerica is distinct and verified.
research-final:MA:8244965238c9a110ce69Watertown, MA · Csquare
Reported status: operational
Reported capacity: 19.1 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-07-19
Review note: Csquare first-party differentiates Watertown BOS4 from Waltham BOS1 despite same Boston metro marketing.
Csquare first-party differentiates Watertown BOS4 from Waltham BOS1 despite same Boston metro marketing. Evidence
Westborough, MA · Amazon Data Services
Reported status: proposed
Source reference: address match (exact): 600 FRIBERG PKWY, WESTBOROUGH, MA, 01581. Census Geocoder; not a verified facility pin.
Original source · 2026-10-24
Review note: Supplier AWS Westborough proposal not evidence of operational facility; need applicant/parcel primary proof.
research-final:MA:0e429d34431b9621bff8Westborough, MA
Reported status: approved/permitted (EPA air-permit record)
Regulatory reference: FRS facility point (stated accuracy 30 m). EPA FRS/ECHO; not a verified facility pin.
Original source · 2026-10-28
Review note: State Street Westborough EPA record not proof of AWS overlap nor live DC operations.
research-final:MA:72cbf7516314468bdaf7Westborough, MA
Reported status: existing (EPA facility record; status unverified)
Exact location not published.
Original source · 2026-10-28
Review note: Generic Westborough EPA facility entry cannot establish separate center or current operations.
research-final:MA:b27d65f2c8bfc3f6e22bWestborough, Grafton, MA · Amazon Data Services Inc.
Reported status: proposed
Approximate locality: approximate: Census 2024 Gazetteer place centroid for Westborough. Census 2024 Gazetteer centroid; not a verified facility pin.
Original source · 2026-07-19
Review note: Regional AWS Worcester County properties aggregates proposed Grafton/Westborough leads; no additional third campus.
research-final:MA:b5faa54130a7f6996de9Westfield, MA · Servistar Realties
Reported status: proposed
Reported capacity: 274 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-07-18
Review note: Westfield Servistar project is a proposal, no independently confirmed operating facility or parcel geometry.
research-final:MA:b43557c5cd386698f807Worcester, MA · Crown Castle
Reported status: operational
Exact location not published.
Original source · 2026-09-15
Review note: Crown Castle Worcester 474 Main requires first-party data-center physical service and whether network presence is in shared building.
research-final:MA:f8f1601081513512be59Adamstown, MD · Aligned Data Centers
Reported status: under construction
Reported capacity: 264 MW (scope and operation unverified)
Approximate locality: approximate: Census 2024 Gazetteer place centroid for Adamstown. Census 2024 Gazetteer centroid; not a verified facility pin.
Original source · 2026-07-19
Review note: IAD-04 is one Aligned building in the Quantum Frederick data park; general Aligned development label and IAD04 do not add two facilities.
IAD-04 is one Aligned building in the Quantum Frederick data park; general Aligned development label and IAD04 do not add two facilities. Evidence
Adamstown, MD · Aligned Data Centers
Reported status: under construction
Reported capacity: 72 MW planned (scope and operation unverified)
Exact location not published.
Original source · 2026-10-22
Review note: IAD-04 is one Aligned building in the Quantum Frederick data park; general Aligned development label and IAD04 do not add two facilities.
IAD-04 is one Aligned building in the Quantum Frederick data park; general Aligned development label and IAD04 do not add two facilities. Evidence
Adamstown, MD · TPG Real Estate; Catellus Development Corporation
Reported status: under construction
Reported capacity: 2.4 GW (scope and operation unverified)
Exact location not published.
Original source · 2026-07-17
Review note: Quantum Frederick is a park containing multiple separately operated/phased facilities, not a third Aligned/Rowan building.
research-final:MD:773bc59a1422d93209d2Adamstown, MD · Rowan Digital Infrastructure
Reported status: operational
Reported capacity: 231 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-06-15
Review note: Rowan's own Bauxite I is a distinct project phase within its Maryland campus, substantially complete in 2025; not proof that customer IT power is commissioned.
Rowan's own Bauxite I is a distinct project phase within its Maryland campus, substantially complete in 2025; not proof that customer IT power is commissioned. Evidence
Adamstown, MD · Rowan Digital Infrastructure; Amazon Data Services, Inc.
Reported status: under construction
Reported capacity: 230 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-07-19
Review note: Rowan's Bauxite II is separately phased, delivery targeted 2026, not a duplicate of Bauxite I or necessarily a separate campus.
Rowan's Bauxite II is separately phased, delivery targeted 2026, not a duplicate of Bauxite I or necessarily a separate campus. Evidence
Adamstown, MD · Rowan Digital Infrastructure
Reported status: proposed
Reported capacity: 165 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-06-15
Review note: Rowan's Bauxite III separately phased, delivery targeted 2027; preserve separate building/phase vs single campus count.
Rowan's Bauxite III separately phased, delivery targeted 2027; preserve separate building/phase vs single campus count. Evidence
Annapolis, MD
Reported status: existing (EPA facility record; status unverified)
Regulatory reference: FRS facility point (stated accuracy 50 m). EPA FRS/ECHO; not a verified facility pin.
Original source · 2026-10-28
Review note: Annapolis EPA facility record does not prove current data center operator, operating lifecycle or separate building.
research-final:MD:79bdfc40eb4ab294f093Annapolis, MD
Reported status: approved/permitted (EPA air-permit record)
Regulatory reference: FRS facility point (stated accuracy 150 m). EPA FRS/ECHO; not a verified facility pin.
Original source · 2026-10-28
Review note: IBM Annapolis EPA permit alone does not confirm active data center, independent building or company tenancy.
research-final:MD:afe1cbcd7f12ff547413Annapolis Junction, MD · Microsoft
Reported status: under construction
Exact location not published.
Original source · 2026-10-22
Review note: Microsoft Annapolis Junction campus is supplied as construction; first-party commissioning and phase/building identity not established.
research-final:MD:908ebd8a1848f872b0a9Annapolis Junction, MD
Reported status: approved/permitted (EPA air-permit record)
Exact location not published.
Original source · 2026-10-28
Review note: Microsoft Yellow Facility EPA entity might be part of Annapolis Junction campus but cannot be counted as an extra operating data center.
research-final:MD:fba6521795c781c34d4eBallenger Creek, MD
Reported status: existing (mapped; status unverified)
Exact location not published.
Original source · 2026-02-09
Review note: Unnamed DOI source point lacks independent building/operator identity.
research-final:MD:c994f53e6717435fee36Baltimore, MD · AiNET
Reported status: operational
Reported capacity: 80 MW operational (scope and operation unverified)
Exact location not published.
Original source · 2026-09-13
Review note: AiNET One Market carrier hotel source needs current provider address and multi-tenant crosswalk; Zayo 111 Market Place may be presence in same building.
Current operator identifies One Market Center carrier hotel at 300 West Lexington Street, serving colocation clients and network providers. DataBank BWI1 tenant reference at the same building is not an extra physical facility. Evidence
Baltimore, MD · Crown Castle Inc.
Reported status: operational
Exact location not published.
Original source · 2026-06-17
Review note: Crown Castle ODbL tagged network facility not independent operating data center proof.
research-final:MD:4b1a2c7f9abb7541e3d1Baltimore, MD · DataBank
Reported status: operational
Reported capacity: 1.5 MW operational (scope and operation unverified)
Exact location not published.
Original source · 2026-09-13
Review note: DataBank supplier BWI1 Downtown Baltimore must not be mistaken for Expedient BWI1 Owings Mills, different operator/sites; require DataBank first-party building.
research-final:MD:25c4002add8c45530e6aBaltimore, MD · Expedient
Reported status: operational
Reported capacity: 2 MW operational (scope and operation unverified)
Exact location not published.
Original source · 2026-07-22
Review note: Expedient Baltimore Tide Point label needs exact physical confirmation distinct from its currently marketed Owings Mills BWI1 at Red Run Boulevard.
Expedient Baltimore Tide Point label needs exact physical confirmation distinct from its currently marketed Owings Mills BWI1 at Red Run Boulevard. Evidence
Baltimore, MD · Johns Hopkins University
Reported status: proposed
Exact location not published.
Original source · 2026-10-22
Review note: Hopkins Bayview research-computing proposal, ODbL Johns Hopkins existing site and general data science proposal may be different buildings or project versions; no triple-count.
research-final:MD:a496c924493665f5cb64Baltimore, MD
Reported status: existing (mapped; status unverified)
Exact location not published.
Original source · 2026-06-14
Review note: Hopkins Bayview research-computing proposal, ODbL Johns Hopkins existing site and general data science proposal may be different buildings or project versions; no triple-count.
University identifies the existing MARCC research computing and server-colocation facility on its Bayview campus, now administered by ARCH, and supplies its physical address separately from its Homewood offices. This admits the existing facility, not a second record for the 2026 proposed expansion. Census geometry is independently queried; IM3 and OSM points are not promoted. Evidence
Baltimore, MD · Johns Hopkins University
Reported status: proposed
Approximate locality: address match (exact): 5400 E LOMBARD ST, BALTIMORE, MD, 21224. Census Geocoder; not a verified facility pin.
Original source · 2026-06-15
Review note: Hopkins Bayview research-computing proposal, ODbL Johns Hopkins existing site and general data science proposal may be different buildings or project versions; no triple-count.
research-final:MD:f804d062dd9bb685f0d8Baltimore, MD · Lumen Technologies
Reported status: operational
Exact location not published.
Original source · 2026-07-23
Review note: Lumen Baltimore supplier label requires current separate physical data center evidence.
research-final:MD:f0f1e273cabd3e0f2404Baltimore, MD · MAG Partners
Reported status: cancelled
Reported capacity: 50 MW (scope and operation unverified)
Exact location not published.
Original source · 2026-07-17
Review note: Vendor marks MAG Baltimore Peninsula proposal cancelled; require first-party withdrawal and versions before terminal lifecycle disposition.
research-final:MD:f2ddbbacbd796c2b2863