San Jose Data Center - (State Clearinghouse ID #2021020002)
6 Documents in Project
Summary
SCH Number
2021020002
Lead Agency
California Energy Commission
Document Title
San Jose Data Center - (State Clearinghouse ID #2021020002)
Document Type
NOD - Notice of Determination
Received
Posted
5/15/2026
Document Description
Issuance of Authority to Construct for two Fire Pumps and one Emergency Backup Diesel Generator, Sources S-2 through S-4. (Air District Application 696408). The Air District has issued an Authority to Construct to Microsoft for two diesel fire pumps {S-2 and 5-3) and one emergency backup diesel generator (S-4) at the San Jose Data Center. The backup generator will be equipped with a catalyzed diesel particulate filter (DPF) and a selective catalytic reduction {SCR) system to reduce particulate matter and NOx emissions. The Data Center would consist of two single-story buildings. The northern building is approximately 244,676 square feet in size, and the southern building is approximately 152,283 square feet, for a total of approximately 396,914 square feet. The maximum total data center electricity demand at full load would not exceed 99 MW.
A total of 224 natural gas generators are proposed to provide backup power for the two data center buildings' servers. Two diesel-fired generators are also proposed to provide emergency power for life safety systems of the buildings. In addition, two diesel fire pumps will be used for fire suppression and located next to a water storage tank at the northwestern area of the Data Center site. The Air District has already issued Authority to Constructs for 140 natural gas backup generators and one diesel-fired backup generators at the San Jose Data Center. This Authority to Construct authorizes Microsoft to install one emergency backup diesel-fired generator and two diesel fire pumps. The facility is permitted to operate these backup engines for emergency purposes, plus up to 42 hours per year for the generator and 26 hours per year for each fire pump for testing, maintenance and reliability purposes. They will not be used for routine data center operations.
Contact Information
Name
Lisa Worrall
Agency Name
California Energy Commission {CEC}
Job Title
Senior Environmental Planner
Contact Types
Lead/Public Agency
Phone
Name
Sadegh Sadeghipour
Agency Name
Bay Area Air Quality Management District
Job Title
Air Quality Engineer
Contact Types
Responsible Agency
Phone
Email
Name
Navin Sathi
Agency Name
Microsoft Corporation
Job Title
General Manager - DC Operations
Contact Types
Project Applicant
Phone
Location
Cities
San Jose
Counties
Santa Clara
Regions
Citywide, Countywide, Northern California, San Francisco Bay Area
Other Location Info
1657 Alviso-Milpitas Road
Other Information
Nearest Cross Street: McCarthy Blvd
Notice of Determination
Approving Agency
Bay Area Air Quality Management District
Approving Agency Role
Responsible Agency
Approved On
Determinations
(1) The project will have a significant impact on the environment
Yes
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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