FieldProspects

San Joaquin County, California

San Joaquin County, California has 78 power projects in the FieldProspects database: 56 operating plants totaling 1.6 GW and 22 planned projects totaling 5 GW. No data center record lists the county. Battery Storage leads with 4.2 GW across 23 projects.

Data as of Grid region: California ISO (CAISO)Refreshed monthly
78
power projects, planned and operating
5GW
planned generation, 22 projects
1.6GW
operating generation, 56 projects
1
planned project past its listed in-service date
Map

San Joaquin County and its neighbors

Counties shaded by data center MW on record, planned to operating. 6 of its 6 neighboring counties have pages of their own. The rest are in the member database.

Amador 41 MW Stanislaus no data centers San Joaquin no data centers Calaveras no data centers Contra Costa no data centers Sacramento 109.6 MW Alameda 125.6 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
3.1times

more planned than operating generation in San Joaquin County. 22 projects in the queue would add 5 GW to the 1.6 GW operating today, and one of them is past its listed in-service date.

Operating generation1.6 GW
Planned generation5 GW

Technology mix

78 projects, 6.6 GW planned and operating

Battery Storage4.2 GW23 projects, 64%
Natural Gas1.1 GW14 projects, 17%
Solar805.7 MW24 projects, 12%
5 other technologies498.2 MW17 projects, 8%
Which companies own these 78 projects?Project names, developers and contacts are for members.See what members get

Power generation in the county

56 plants operate inside San Joaquin County, 1.6 GW. The queue adds 5 GW across 22 projects, and one of them is past its listed in-service date.

Figure 1

Operating and planned generation by technology

MW in San Joaquin County

OperatingPlanned
Battery StorageOperating 564.3 MW 9 projects
Battery StoragePlanned 3.6 GW 14 projects
Natural GasOperating 923.5 MW 12 projects
Natural GasPlanned 165 MW 2 projects
SolarOperating 37.1 MW 20 projects
SolarPlanned 768.6 MW 4 projects
WindOperating 3 MW 2 projects
WindPlanned 408.8 MW 1 project
BiomassOperating 57 MW 4 projects
BiomassPlanned 5 MW 1 project
HydroOperating 10.8 MW 3 projects
Landfill GasOperating 8.8 MW 4 projects
OilOperating 4.8 MW 2 projects
View as table
TechnologyStatusProjectsMW
Battery StorageOperating9564.3
Battery StoragePlanned143,640.1
Natural GasOperating12923.5
Natural GasPlanned2165
SolarOperating2037.1
SolarPlanned4768.6
WindOperating23
WindPlanned1408.8
BiomassOperating457
BiomassPlanned15
HydroOperating310.8
Landfill GasOperating48.8
OilOperating24.8
Operating: 1.6 GW. Planned: 5 GW. If every planned project is built, county generation would reach 6.6 GW.
Source. FieldProspects database: ISO/RTO interconnection queues, EIA-860M and public data center filings, data as of October 8, 2026.
Figure 2

Planned generation by listed in-service year

MW. Years before 2026 are past due.

Past dueDue 2026 or later
01k2k3k Snapshot year 20 2012 2014 2016 2018 2020 2022 2024 100 2026 231 1,327 2028 99 971 2030 2,239
View as table
YearPlanned projectsMW
2012120
201300
201400
201500
201600
201700
201800
201900
202000
202100
202200
202300
202400
202500
20262100
20275231
202841,326.7
2029199
20303971.4
203162,239.4
1 project, 20 MW, was due before 2026

San Joaquin County against its neighbors

Alameda County has the most data center MW among the neighbors, 125.6 MW. 6 of the 6 have more generation operating than data center MW on record.

CountyData center recordsData center MWOperating generation MWPlanned generation MWData center MW per MW operating
Alameda County 3
126
1,348
2,291 0.09x
Sacramento County 7
110
1,750
719 0.06x
Amador County 1
41
234
0 0.18x
Contra Costa County 0
0
4,240
1,608 0x
San Joaquin County this page 0
0
1,609
4,988 0x
Stanislaus County 0
0
1,505
1,443 0x
Calaveras County 0
0
285
949 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.

7 counties shown

What changed since June 4, 2026

15 projects in San Joaquin County moved between the two snapshots. Counts and MW are below; the projects themselves are for members.

Open the change feed
0
added to a queue, 0 MW
5
came online, started construction or signed an interconnection agreement, 85.9 MW
6
cancelled, dropped or went inactive, 1.3 GW
4
slipped their in-service date, 141 MW

Every change in San Joaquin County

Project, what changed, technology, MW and the dates that moved, for all 15 changes.

Members only
County: San Joaquin County, CASince June 4, 2026 15 changes
ProjectChangeTechnologyMWPrevious dateNew date
15 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 San Joaquin County

Project name, developer, status, MW, in-service year and the developer’s contacts, for all 78 records. Filter, sort and export to Excel.

Members only
County: San Joaquin County, CAStatus: all except cancelledSort: MW, largest first 78 records
Project or campusDeveloperStatusMWYearContacts
78 records and 6.6 GW behind this preview

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