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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Meta announced this expansion on May 4, 2022—not in 2026. The company said it would add three buildings to its Mesa, Arizona, data-center campus, taking the planned site beyond 2.5 million square feet and more than $1 billion in Arizona investment. Meta’s January 30, 2025 update said the facility had begun serving traffic while construction of the broader site continued.
The phrase “three data centers” is shorthand. Meta’s announcement describes three new buildings within one Mesa campus, not three separately named campuses.
What Meta actually announced
Meta’s original Mesa project broke ground on August 12, 2021. The company then announced the larger build-out nine months later, saying three additional buildings would be added to the existing campus. The site is in Mesa’s Eastmark area, with the City of Mesa, Arizona Commerce Authority, Eastmark, Salt River Project and other partners identified in Meta’s original announcement.
Meta said the expanded campus was planned to exceed 2.5 million square feet and represent more than $1 billion of investment in Arizona. Those are company-stated project totals, not an independently audited measurement.
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Buildings versus data centers
A data-center campus can contain multiple buildings, power systems and support facilities. Meta’s May 2022 language is precise: three new buildings. The available announcements do not establish that each building is a separate, independently named data center, so treating the headline as three unrelated facilities would be misleading.
Project timeline
| Date | What happened |
|---|---|
| August 12, 2021 | Meta announced the Mesa project and broke ground. Meta’s announcement described the location, partners, initial investment and sustainability plans. |
| May 4, 2022 | Meta announced three additional buildings, a planned campus above 2.5 million square feet, more than $1 billion in Arizona investment, up to 2,000 peak construction workers and about 200 expected operational jobs. Read the expansion announcement. |
| January 30, 2025 | Meta said the Mesa facility had begun serving traffic. It also said construction of the remainder of the site would continue. See the operational update. |
| August 2026 listing | Meta’s U.S. directory still listed Mesa as a more-than-$1-billion project with a 2021 groundbreaking, 2,000 peak construction workers and more than 200 operational jobs expected. The listing gives no building-by-building completion date. View the directory. |
How large is the investment and workforce?
- Planned campus: more than 2.5 million square feet after the expansion, according to Meta.
- Arizona investment: more than $1 billion, according to Meta.
- Construction employment: an average of about 1,500 workers was cited for the original project; the expansion announcement raised the peak estimate to 2,000 skilled-trade workers.
- Long-term operations: about 200 operational jobs were expected in 2022. Meta’s 2025 update said the facility supported more than 200 operational jobs.
Construction jobs are temporary and peak staffing is not the same as a permanent headcount. The operational total is the more relevant measure for the campus’s continuing local employment, although it is much smaller than the headline investment figure.
Why Meta chose Mesa
Meta’s stated site-selection reasons were access to infrastructure, a construction and operations workforce, renewable-energy opportunities and cooperation with local governments and community partners. These explanations describe the company’s rationale; they are not an independent ranking of Mesa against other data-center locations.
The Mesa facility forms part of Meta’s global infrastructure supporting products and technologies such as Facebook, Instagram, WhatsApp and Meta AI. The available project announcements do not identify which specific workloads are hosted in Mesa or imply that any service’s data is stored there exclusively. It is also a Meta-owned infrastructure site, not a public cloud region or colocation facility that businesses can rent directly.
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Data centers require cooling and other water-consuming operations, making new capacity particularly sensitive in drought-prone Arizona. Meta said its Mesa design would be substantially more water-efficient than an average data center and that it would support projects intended to restore approximately 200 million gallons of water annually to the Colorado River and Salt River basins. In May 2022, Meta said more than 25 million gallons had already been restored in Arizona.
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- Easy equipment configuration: Fully adjustable mounting rails and numbered U positions, with square holes for easy equipment mounting with top and bottom punchout panels for easy cable access
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- PCI & HIPPA and EIA/ECA-310-E compliant
Those figures are Meta’s commitments and reported results, not an independent audit of the Mesa facility. Meta’s later Mesa materials describe native landscaping, rainwater capture and infiltration, water-saving fixtures and more efficient cooling. See Meta’s Mesa fact sheet.
Restoration is not the same as onsite consumption
Water used at the campus for cooling and operations is a different accounting category from water saved or restored through offsite conservation and watershed projects. A restoration project can improve agricultural efficiency, recharge or other watershed conditions without returning the same physical water to the data-center site or directly supplying Mesa households. The available sources do not provide a current, independently verified figure for the facility’s annual onsite water consumption.
Meta’s broader water program explains its distinction among efficiency, replenishment and disclosure. Read Meta’s water approach.
Energy and sustainability commitments
Meta said the Mesa facility would be matched with 100% clean and renewable energy. Through three projects supported with Salt River Project, the company also said 450 megawatts of new solar energy would be added in Arizona. Meta’s project materials identify a LEED Gold certification goal or claim for the facility.
“Matched with 100% renewable energy” generally refers to procurement or matching arrangements. It does not mean the campus is physically disconnected from the conventional grid or that every electron consumed at a given moment comes directly from the named solar projects. Calling Mesa “entirely solar-powered” would overstate what the sources establish.
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Community and economic commitments
Meta announced a $50,000 Mesa College Promise grant with the 2022 expansion. In January 2025, it announced another $225,000 grant, bringing the company’s stated total support for the program to $300,000. Meta’s January 2025 fact sheet also said it had provided more than $1.3 million in grants to local schools and nonprofits since 2021, alongside continuing Data Center Community Action Grants.
The $50,000 and $225,000 figures are individual dated grants; the $300,000 figure is the stated cumulative Mesa College Promise support after the later grant. Meta’s 2026 community-grant page shows that local grant activity remained active. See the 2026 recipients.
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What is known—and what remains undisclosed
The public announcements establish the project’s planned scale, investment, employment estimates, sustainability commitments and January 2025 operating milestone. They do not establish several details readers may reasonably want:
- the exact number of completed buildings as of August 2026;
- the current total IT or power capacity;
- annual electricity consumption;
- current onsite water consumption or a facility-specific water-use effectiveness figure;
- which Meta products, services or AI workloads run at the site; or
- whether all three added buildings are fully operational.
Serving traffic means at least part of the facility was in use by January 2025. It does not prove that the entire planned campus or every added building was complete, because Meta said construction would continue.
The bottom line for Mesa
Meta’s Mesa project is a large expansion of one existing campus: three additional buildings, a planned footprint above 2.5 million square feet and more than $1 billion in stated Arizona investment. It brings substantial temporary construction activity, more than 200 reported operational jobs and renewable-energy and water-restoration commitments. The facility began serving traffic in stages, but Meta has not publicly supplied a precise final build-out date or a complete current accounting of its power and onsite water use.
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