FieldProspects

Middlesex County, New Jersey

Middlesex County, New Jersey has 235.1 MW of data centers on record, planned to operating, across 5 records, against 3.1 GW of generation operating inside the county. The queue adds 16.4 MW of planned generation across 2 projects. That is 29% of New Jersey's data center MW.

Data as of Grid region: PJM InterconnectionRefreshed monthly
235.1MW
data centers, planned to operating
5
data center records, not cancelled
29%
of New Jersey's data center MW
3.1GW
operating generation, 105 projects
16.4MW
planned generation, 2 projects
5
data center developers active here
Map

Middlesex County and its neighbors

Counties shaded by data center MW on record, planned to operating. 4 of its 4 neighboring counties have pages of their own. The rest are in the member database.

Somerset no data centers Middlesex 235.1 MW Mercer 119 MW Monmouth no data centers Union 52 MW
no data center MWunder 100 MW100 to 1,000 MW1,000 to 5,000 MW5,000 to 15,000 MW15,000 MW or more no page yet

Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers

Headline finding
8%

of the generation operating in the county is matched by data center MW on record: 235.1 MW of data centers against 3.1 GW of plants, with 16.4 MW more planned.

Data centers, planned to operating235.1 MW
Operating generation3.1 GW
Planned generation16.4 MW

Data centers by status

5 records, 235.1 MW

Operating145.1 MW3 records, 62%
Planned90 MW2 records, 38%
Who owns each of the 5 records?Campus names, developers and contacts are for members.See what members get

The data center pipeline

2 records list a year online or expected, from 2016 to 2026. The largest expected additions are 90 MW listed for 2026. 3 records list no year.

Figure 1

Data center MW by year online or expected

Records not cancelled, by listed year. 2026 onward is planned or under construction.

Through 20252026 and later
050100150 Snapshot year 111 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 90 2026
View as table
YearRecordsMW
20161111
201700
201800
201900
202000
202100
202200
202300
202400
202500
2026190
Source. FieldProspects database: ISO/RTO interconnection queues, EIA-860M and public data center filings, data as of October 8, 2026. 2 records with a year; 3 without are left out
Figure 2

Who is building in Middlesex

Data center developers by MW on record. Top 5 of 5.

QTS 110.5 MW 1 site
Chirisa Technology Parks 90 MW 1 site
Iron Mountain 30 MW 1 site
DataBank 4.6 MW 1 site
WRV Nurseries South Brunswick 0 MW 1 site
View as table
DeveloperSitesMW
QTS1111
Chirisa Technology Parks190
Iron Mountain130
DataBank15
WRV Nurseries South Brunswick10
Members see all 5 developers, each campus they own here, and the people who run their site selection and energy procurement.
Aggregates only. Campus names are for members.

Power generation in the county

105 plants operate inside Middlesex County, 3.1 GW. The queue adds 16.4 MW across 2 projects.

Figure 3

Operating and planned generation by technology

MW in Middlesex County

OperatingPlanned
Natural GasOperating 2.9 GW 19 projects
SolarOperating 147.2 MW 76 projects
SolarPlanned 3.2 MW 1 project
Battery StorageOperating 20.5 MW 3 projects
Battery StoragePlanned 13.2 MW 1 project
Landfill GasOperating 32.1 MW 4 projects
OilOperating 6 MW 3 projects
View as table
TechnologyStatusProjectsMW
Natural GasOperating192,860.8
SolarOperating76147.2
SolarPlanned13.2
Battery StorageOperating320.5
Battery StoragePlanned113.2
Landfill GasOperating432.1
OilOperating36
Operating: 3.1 GW. Planned: 16.4 MW. Even if every planned project is built, county generation would reach 3.1 GW against 235.1 MW of data centers.
Source: ISO queues and EIA-860M, via FieldProspects
Figure 4

Planned generation by listed in-service year

MW. Years before 2026 are past due.

Past dueDue 2026 or later
05101520 Snapshot year 16 2026
View as table
YearPlanned projectsMW
2026216.4
No planned project is past its listed year

Middlesex County against its neighbors

Mercer County has the most data center MW among the neighbors, 119 MW, 51% of Middlesex County's. 4 of the 4 have more generation operating than data center MW on record.

CountyData center recordsData center MWOperating generation MWPlanned generation MWData center MW per MW operating
Middlesex County this page 5
235
3,067
16 0.08x
Mercer County 1
119
121
171 0.98x
Union County 1
52
2,853
3,479 0.02x
Monmouth County 0
0
135
61 0x
Somerset County 0
0
67
3 0x

Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.

5 counties shown

What changed since June 4, 2026

4 projects in Middlesex County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.

Open the change feed
2
added to a queue, 16.4 MW
0
came online, started construction or signed an interconnection agreement, 0 MW
2
cancelled, dropped or went inactive, 2.6 GW
0
slipped their in-service date, 0 MW

Every change in Middlesex County

Project, what changed, technology, MW and the dates that moved, for all 4 changes.

Members only
County: Middlesex County, NJSince June 4, 2026 4 changes
ProjectChangeTechnologyMWPrevious dateNew date
4 changes behind this preview

Rows are hidden on public pages. Members see the project behind each change, its developer and the dates that moved.

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Every record in Middlesex County

Campus or project name, developer, status, MW, year and the developer’s contacts, for all 112 records. Filter, sort and export to Excel.

Members only
County: Middlesex County, NJStatus: all except cancelledSort: MW, largest first 112 records
Project or campusDeveloperStatusMWYearContacts
112 records and 3.3 GW behind this preview

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