4 data center projects in San Jose City
Who decides here: the City Council of San Jose City votes on zoning. The Santa Clara County may review big projects too.
In San Jose City
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…
Nearby (within 15 miles)
Prime 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.
Approved, not built yetabout 10 miles awayBowers 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…
Built & runningabout 10 miles awayCoreSite SV9 data center
Santa Clara, Santa Clara County
🕒 May 23, 2023: CoreSite said SV9 was under construction, with building permits from 2022.
Built & runningabout 10 miles awayVantage 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…
Local votes and rules
📜 Data center rules
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
The city approved Microsoft's Alviso data center campus using an update to its 2022 environmental report.
What you can do
- Get told first.
We'll email you if anything changes in San Jose City. - Go to council meetings.
Anyone can speak. Big projects usually need a public hearing. - Ask questions in writing.
Use our checklist.
🔔 Get told first
⚡ Your electric company
Depending on where you live in San Jose City: Wapa-- Western Area Power Administration (public) or Pacific Gas & Electric Co. (company).
Big data centers need a lot of power. Who pays for new power lines depends on state rules. See the rules in California.
🙋 Open tasks here
- Is the size 48 megawatts or 99 megawatts, and why do the numbers differ?
- How many backup generators will it have, and what fuel will they use?
- Which company is behind this project? State papers do not name it.
- When will the draft environmental report come out for public comment?
- How much water would it use?
- Did the council approve the agreement with Prologis, and on what date?
- How much water would the data centers use?
- When will the environmental review start?
- How many backup generators would it have, and what fuel?
- When is the first public hearing?