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eStruxture CAL-3

eStruxture is building CAL-3 at 200 High Plains Common in Rocky View County. Current company materials describe 90 MW of total power, 70 MW of critical power, six Phase 1 data halls and 205,000 square feet of building area. Rocky View County published a project-specific development approval and later building-permit records confirm construction activity. CoreWeave is the announced Phase 1 anchor tenant. In Proceeding 31020, eStruxture seeks AUC approval for 21 diesel emergency standby generators with 66.75 MW of total nameplate capacity. The application says the generators were procured and installed before the required filing, but had not been tested or operated as of August 28, 2026.

eStruxture Data Centers
How to read this profilePublic recordProponent statementProponent projectionProponent projectionA forecast, target, estimate, or promised future outcome from the company proposing the project.The label identifies whose projection it is. It does not turn a future claim into an independently verified result or an enforceable approval condition.Learn more →ADCW context

Project facts

Core scale, approval, employment, and schedule information, labelled by the type of evidence available.

Proponent statement

Total facility power

90 MW

The current data sheet's total-power rating for the completed design, not measured demand.

Sources [3]
Proponent statement

Critical power

70 MW

The power available to critical computing loads within the 90 MW total facility rating. ADCW does not add the two figures together.

Sources [3]
Proponent statement

Phase 1 building

205,000 sq. ft.

The current data sheet lists 51,750 square feet of whitespace across six data halls on a 12.6-acre site.

Sources [3]
ADCW context

Announced investment

More than CA$750 million

eStruxture's CAL-3 full-build estimate, also listed as CA$750 million by Alberta Major Projects. A later company statement describes more than CA$1 billion invested across Alberta's digital infrastructure more broadly, not a revised CAL-3-only cost.

Sources [5], [6], [4]
Proponent statement

Anchor tenant

CoreWeave

CoreWeave committed to an undisclosed portion of Phase 1 capacity for AI cloud infrastructure. eStruxture does not publish the tenant's contracted MW.

Sources [4]
Proponent statement

Phase 1 availability

Sold out

An operator claim. The remaining tenants, contracted capacity, and workload mix have not been disclosed.

Sources [2]
Public record

Municipal approval

PRDP20251314

Rocky View County's June 17, 2025 notice lists the data centre tenancy at 200 High Plains Common and an appeal deadline of July 8, 2025.

Sources [7]
Public record

AUC proceedingAUC proceedingA proceeding is the Alberta Utilities Commission's formal record for reviewing an application, including evidence, submissions, and a decision when issued.A proceeding number helps locate the record. The existence of a proceeding does not mean the application has been approved.Learn more →

31020

An application for 21 diesel emergency standby generators with 66.75 MW of total nameplate capacity. The filing is not an approval or operating authorization.

Sources [8]
Proponent projection

Target service

Fall 2026

A company projection that remains dependent on commissioning, occupancy, utility readiness, and customer deployment.

Sources [1], [4]

Energy and emissions

CAL-3's current data sheet separates 90 MW of total facility power from 70 MW of critical power available to computing equipment. Neither figure is measured operating demand.

Important distinction: The AUC application describes three independent FortisAlberta distribution lines serving a 45 MW Phase 1 data-centre load. It seeks approval for 21 diesel emergency standby generators totalling 66.75 MW. That backup nameplate figure is not data-centre load and is excluded from ADCW's provincial headline totals.
Proponent statement

Utility service

Multiple FortisAlberta lines

The data sheet identifies multiple 15 MW utility lines serving dedicated electrical lineups and lists Fortis as the power provider.

Sources [3]
Proponent statement

Rack density

Up to 125 kW+ per cabinet

A maximum design capability for selected deployments, not the average density of every rack.

Sources [3], [1]
Proponent statement

Backup generationBackup generationBackup generators provide electricity when the normal supply is unavailable. They may also run for testing or maintenance.Installed capacity does not establish continuous operation, annual fuel use, or emissions. Operating hours and permit conditions are separate evidence.Learn more →

21 diesel units / 66.75 MW

The AUC application covers twenty 3.25 MW generators and one 1.75 MW life-safety generator. Up to 19 units would run concurrently during an outage. This is standby nameplate capacity, not data-centre load.

Sources [8]
Proponent statement

Filing timing

Installed before AUC application

eStruxture calls this an administrative oversight and says the generators had been procured and installed before the required application was submitted. The company said no testing or operation had occurred as of August 28, 2026.

Sources [8]
Proponent statement

Routine testing

Monthly, up to 30 minutes per unit

The applicant proposes daytime testing of one generator at a time outside emergency operation.

Sources [8]
ADCW context

Resilience standard

Tier III designed

The facility is designed for concurrent maintainability. The current data sheet lists Uptime Institute Tier III by Design among planned certifications; design language is not proof that final certification has been issued.

Sources [3], [1]
ADCW context

Electricity use and emissions

Not published

No expected annual MWh, current load profile, project-specific supply mix, or operational greenhouse-gas estimate was found in the reviewed sources.

Sources [3], [1], [14]

Water

CAL-3 uses a closed-loop system combining air and direct-to-chip liquid cooling. eStruxture says its facilities have moved away from public water for cooling, but CAL-3-specific water sources and volumes are not published. [3], [14]

Proponent statement

Cooling design

Closed-loopClosed-loop coolingCooling fluid circulates repeatedly through a contained loop instead of being routinely discharged after one pass.That describes the loop, not the whole site's water use. A separate heat-rejection system can still use water, and filling, maintenance, and leaks also matter.Learn more → air and liquid coolingLiquid coolingLiquid carries heat away from computing equipment, for example through cold plates at the chips.This describes how heat leaves the equipment. It does not identify how heat is ultimately released outside, or establish the site's water demand.Learn more →

CAL-3 combines air cooling with direct-to-chip liquid cooling. The mix varies by deployment density.

Sources [3]
ADCW context

Water disclosure

CAL-3 volumes not published

eStruxture says its facilities have moved away from public water for cooling, but it has not published CAL-3's initial-fill, top-up, withdrawalWithdrawal, consumption, and dischargeWithdrawal is water taken from a source. Consumption is the portion not returned to the same water system. Discharge is water released after use or treatment.These are different quantities. Check which one a water figure describes before comparing projects.Learn more →, consumption, wastewater, or discharge figures. Measured operating use is also unavailable because commercial service is not confirmed.

Sources [1], [3], [4], [14]

Noise

Project-specific noise evidence is shown when it is available. A predicted sound level is not a measurement from an operating facility.

Proponent projection

Normal-operation model

43–45 dBA at four receptors

A March 20, 2025 assessment modelledModelled versus measuredA modelled result is a prediction based on inputs and assumptions. A measured result comes from observations or instruments under particular conditions.A prediction is not verified operating performance. Check the location, period, operating scenario, and what the reported number actually represents.Learn more → an earlier 72-generator, 144-chiller design and predicted nighttime cumulative levels of 43–45 dBA with barriers. These are modelled values, not operating measurements.

Sources [8]
ADCW context

Generator-testing model

47–53 dBA daytime

The same assessment modelled one generator testing at a time. The current application reduces the generator count to 21 and claims an approximately 5.35 dB cumulative source reduction, but the filing does not provide a new receptor table for the final design. This is an applicant claim, not an AUC finding.

Sources [8]

Indigenous context

Data centre projects sit within treaty territories and places with longstanding First Nations and Métis connections. This section brings together the public record on treaty geography, Indigenous ownership, consultation, and community concerns. Treaty boundaries alone cannot tell us which communities may be affected or how they view a project.

ADCW context

Treaty geography

Treaty 7 territory

The federal historical treaty-boundary dataset places the project area within Treaty 7. This is geographic context and does not establish project-specific consultation, effects, or community positions.

Sources [15]
Proponent statement

Application notification

Seven First Nations notified

The applicant says it notified Kainai, Piikani, Siksika, Tsuut'ina, and the Bearspaw, Chiniki, and Goodstoney Nations. It reported no questions or comments by August 28, 2026. This is the applicant's participation record, not evidence of consent or an AUC finding on consultation.

Sources [8]

Approval and public process

The County development approval and later building permits establish a municipal approval and active construction trail. Proceeding 31020 adds a separate AUC review for emergency standby generators that the applicant says were installed before filing. These records do not prove that every condition is complete, that occupancy has been granted, or that the facility has begun drawing its full design power.

Public record

Development approval

PRDP20251314

The County's approved-permit notice covers an office and warehouse building accommodating a data centre at Lot 12, Block 7, Plan 2410651; NE 12-26-29-W4M.

Sources [7]
ADCW context

Public notice and appeal

Appeal deadline July 8, 2025

The reviewed County search did not identify a later appeal decision. Subsequent building permits and construction records show the project continued.

Sources [7], [9], [10]
Public record

New-construction permit

PRBD20255100

The November 2025 County report lists 27,263 m² and an estimated construction value of CA$24.0 million at the CAL-3 address. This permit value is not the project's full capital cost.

Sources [9]
Public record

Alteration permit

PRBD20258056

The April 2026 County report lists 4,020 m² and an estimated construction value of CA$5.15 million at the same address. It should not be added to company investment claims without a complete cost reconciliation.

Sources [10]
ADCW context

County sector research

Report received for information

The County's commissioned report considers infrastructure capacity, agricultural land, water, energy, and municipal policy at a sector level. Council received it on September 22, 2026. It is not a site-specific assessment, adopted policy, or a change to CAL-3's existing permits.

Sources [11], [12]
Public record

County policy context

CAL-3 recognized as an East Balzac development

Rocky View County publicly identified CAL-2 and CAL-3 while describing its broader approach to responsible AI data centre development.

Sources [13]
ADCW context

Standby-generator application

AUC decision pending

Proceeding 31020 requests approval for the already-installed emergency standby generators. The application asked for a decision by September 29, 2026; that is the applicant's requested date, not a regulator deadline or approval.

Sources [8]
Proponent statement

Participant involvement

No unresolved concerns reported by applicant

The participation program used a 2 km notification radius and 800 m consultation radius. One landowner asked about noise and later reported no concerns. Rocky View County said it had not independently verified the technical, environmental, fuel, emissions, noise, safety, or emergency-response information.

Sources [8]
ADCW context

Commercial service

Not yet confirmed

A launch event and tenant announcement are not occupancy approval, commissioning completion, or proof of operating load.

Sources [1], [4]

Timeline

Observed decisions and future dates are kept distinct; projected milestones may change.

  1. Proponent statement

    eStruxture announced CAL-3 as a 90 MW project with more than CA$750 million planned for the full build and a second-half 2026 target. [5]

  2. Public record

    Rocky View County published the approved development-permit notice for PRDP20251314 at 200 High Plains Common. [7]

  3. Public record

    The County recorded new-construction Building Permit PRBD20255100 at the CAL-3 address. [9]

  4. Public record

    The County recorded alteration Building Permit PRBD20258056 at the same address. [10]

  5. Proponent statement

    eStruxture announced CoreWeave as the Phase 1 anchor tenant and retained a second-half 2026 service target. [4]

  6. Proponent statement

    eStruxture filed Proceeding 31020 for 21 diesel emergency standby generators. It disclosed that the units had already been procured and installed, but said no testing or operation had occurred. [8]

  7. Proponent projection

    Applicant's target for the first 15 MW of Phase 1 data-centre load. This is not a confirmed in-service date. [8]

  8. Proponent projection

    Applicant's target for 30 MW cumulative Phase 1 load. This remains subject to approvals and commissioning. [8]

  9. Proponent projection

    Applicant's target for the full 45 MW Phase 1 load described in the standby-generator filing. [8]

What we still don't know

Some details have not been made public or remain unresolved. We keep those gaps visible and update them when reliable information becomes available.

  • The final commissioning, occupancy, energization, and commercial-service dates have not been confirmed.
  • Current measured electricity demand, expected annual consumption, peak-load profile, utility contract, and physical generation mix are not published.
  • The operator has not disclosed CoreWeave's contracted MW, the identities and capacity of other Phase 1 customers, or the final workload mix.
  • The AUC's decision on Proceeding 31020, any approval conditions, and authorization to test or operate the standby generators remain unresolved.
  • The final air-emissions profile and operating limits for the 21-generator design are not established in the reviewed application package.
  • CAL-3's initial cooling-fluid fill, annual top-up, withdrawal, consumption, wastewater, and discharge volumes are not published.
  • Design PUE and WUE targets, measured efficiency, and heat-reuse plans have not been disclosed in the reviewed sources.
  • Final Tier III certification and the other certifications listed as planned have not been confirmed.
  • The complete relationship between the CA$750-million full-build estimate, the broader CA$1-billion Alberta investment statement, and individual municipal building-permit values is not public.
  • Construction and permanent employment totals, local procurement, tax revenue, and binding community-benefit commitments are not published.
  • The filing reports notification of seven First Nations but no responses by August 28, 2026; any later engagement, concerns, effects assessment, or accommodation measures are not public in the reviewed record.

Source record

Primary and official sources reviewed for this profile. Company disclosures support what the company said, not independent verification of future outcomes.

  1. CAL-3 data centre

    eStruxture Data Centers · Company disclosure · Accessed 2026-08-27

  2. Calgary data centres

    eStruxture Data Centers · Company disclosure · Accessed 2026-08-27

  3. CAL-3 data sheet

    eStruxture Data Centers · Company disclosure · Accessed 2026-08-27

  4. CoreWeave announced as CAL-3 anchor tenant

    eStruxture Data Centers · Company disclosure · 2026-05-14

  5. CAL-3 investment announcement

    eStruxture Data Centers · Company disclosure · 2024-10-29

  6. eStruxture CAL-3 Data Centre

    Government of Alberta Major Projects · Government database · Accessed 2026-08-27

  7. Approved development permits: June 17, 2025

    Rocky View County · Municipal record · 2025-06-17

  9. November 2025 major construction permits

    Rocky View County · Municipal record · 2025-12-04

  10. April 2026 major construction permits

    Rocky View County · Municipal record · 2026-05-05

  11. Emerging Sector Strategy: Data Centre Technology, Impacts, and Municipal Policy Considerations

    EXP Services and Urbanics for Rocky View County · Municipal record · 2026-08-14

  12. Council Decisions: September 22, 2026

    Rocky View County · Municipal record · 2026-09-23

  13. Responsible AI data centre development

    Rocky View County · Municipal record · 2025-09-18

  14. The New Homesteaders of the Digital West

    eStruxture Data Centers · Company disclosure · 2026-05-07

  15. Treaty Boundary dataset

    Government of Canada Open Government Portal · Government database · Modified 2026-06-29