Santa Clara County
8 data center projects we know about. 16 cities, towns and unincorporated areas.
Projects
Microsoft Alviso data center campus (SJC02/SJC03)
San Jose, Santa Clara County
for Microsoft
🕒 June 10, 2026: Microsoft broke ground on the campus.
ProposedSan Jose Data Center 04 (Orchard Parkway)
San Jose, Santa Clara County
22.29 acres
🕒 Feb 9, 2023: The Energy Commission started an environmental report (EIR) on the project.
ProposedPrologis STEM Park at Zanker Road and Highway 237
San Jose, Santa Clara County
159 acres
🕒 Nov 10, 2025: The city announced Prologis as the preferred developer for the site, with a council hear…
Reported in the news, not confirmed yet
ProposedPrologis data center at 5977 Silver Creek Valley Road
San Jose, Santa Clara County
🕒 July 13, 2026: Prologis filed a special use permit (SP26-016) for a three-story, 516,000-square-foot da…
Approved, not built yetBowers data center (2805 Bowers Avenue)
Santa Clara, Santa Clara County
🕒 Feb 9, 2026: A CoreSite company bought 2805 and 2855 Bowers Ave and 2710 Walsh Ave for about $100 mil…
Approved, not built yetPrime data center at 1231 Comstock Street
Santa Clara, Santa Clara County
1.37 acres
🕒 Dec 3, 2024: City Council overturned the Planning Commission's denial and approved the data center.
Built & runningVantage CA3 data center (2590 Walsh Avenue)
Santa Clara, Santa Clara County
🕒 Aug 10, 2022: The California Energy Commission voted to exempt the project's 96 MW of backup generator…
Built & runningCoreSite SV9 data center
Santa Clara, Santa Clara County
🕒 May 23, 2023: CoreSite said SV9 was under construction, with building permits from 2022.
Local votes and rules
⏸️ Pause on new data centers · Gilroy
Council voted unanimously to pause new data centers for 45 days. It can be extended up to two years. The Amazon data center already being built is not affected.
📜 Data center rules · San Jose
A council committee asked staff to add community benefits, like parks and job training, to the data center rules being written. The rules go to council in December 2026.
✅ Approved · San Jose
The city approved Microsoft's Alviso data center campus using an update to its 2022 environmental report.
✅ Approved · Santa Clara
Council overturned the Planning Commission's 'no' vote and approved the Prime data center at 1231 Comstock St.
✅ Approved · Santa Clara
Council approved the 2805 Bowers Ave data center unanimously, even though the Planning Commission did not recommend it.
Find your town
In California, cities and towns decide inside their limits. Outside them, the county decides.