Issuance of Authority to Construct for Eighty-Four Emergency Backup Natural Gas Engine Generators, Sources S-7 through S-90. (Air District Application 704043).
8 Documents in Project
Summary
SCH Number
2021020002
Lead Agency
California Energy Commission
Document Title
Issuance of Authority to Construct for Eighty-Four Emergency Backup Natural Gas Engine Generators, Sources S-7 through S-90. (Air District Application 704043).
Document Type
NOD - Notice of Determination
Received
Posted
8/19/2026
Document Description
The Bay Area Air Quality Management District (Air District) has issued an Authority to Construct to Microsoft for eighty-four (84) backup natural gas engine generators, each abated by a 3-way catalyst system, at the San Jose Data Center. 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 are 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, two diesel-fired backup generators, and two diesel fire pumps at the San Jose Data Center. This Authority to Construct authorizes Microsoft to install the remaining eighty-four natural gas backup engine generators. The facility is permitted to operate these backup engines for emergency purposes. In addition to emergency use, the generators will be operated up to 50 hours per year per engine for reliability-testing operation, and up to 459 hours per year per engine as part of the Pacific Gas & Electric Company's Base Interrupted Program. They will not be used for routine data center operations.
Contact Information
Name
Sadegh Sadeghipour
Agency Name
Bay Area Air Quality Management District,
Job Title
Air Quality Engineer
Contact Types
Project Applicant / Responsible Agency
Phone
Email
Name
Navin Sathi
Agency Name
Microsoft Corporation
Job Title
General Manager
Contact Types
Project Applicant
Phone
Name
Lisa Worrall
Agency Name
California Energy Commission
Job Title
Senior Environmental Planner
Contact Types
Lead/Public Agency
Phone
Location
Counties
Santa Clara
Regions
Countywide, Northern California, San Francisco Bay Area
Other Information
1657 Alviso-Milpitas Road, San Jose, Santa Clara County, CA 95134.
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
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(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
No
(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
No
Attachments
Notice of Determination
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.