DCFR Insight 02 / Site Fit
Why Megawatts Alone Do Not Tell You If a Site Works
Power capacity becomes a real estate decision only after it is converted into racks, modules, yards, roads, buffers, stormwater, phasing, and a defensible delivery sequence.
MW is an electrical target—not a development plan
A marketed number such as 40 MW, 100 MW, or 300 MW tells the team almost nothing about whether the parcel works. The same IT load can create very different footprints depending on rack density, redundancy, cooling technology, electrical topology, module size, structural strategy, and phasing. A credible site-fit model must translate capacity into physical quantities and then test those quantities against the parcel.
Start with the exact load definition
Clarify whether the number represents IT load, utility service, total facility load, or a future campus aspiration. Apply the planning PUE only after the IT load is understood. Separate Phase 1, committed buildout, and ultimate master-plan capacity. Many weak land narratives mix these definitions and overstate what the site or utility can deliver.
Convert IT load into rack and module logic
A planning sequence might convert 40 MW into 40,000 kW and, at 40 kW per rack, approximately 1,000 racks. If the reference design uses 10 MW modules, the program becomes four modules. At 80 kW per rack, the rack count is lower, but electrical distribution, liquid-cooling support, structural loading, and heat rejection intensity may increase. The result is not simply a smaller building; it is a different infrastructure model.
Build the gross footprint from systems, not a generic multiplier
White space is only one component. The gross building also includes electrical rooms, UPS or battery support, network and meet-me rooms, security, admin, maintenance, storage, corridors, egress, structure, wall thickness, loading, and commissioning zones. A gross-up factor is useful for screening, but the plan should show what the factor is carrying so the footprint does not become an unexplained rectangle.
Add the exterior systems that compete for the same land
Electrical and transformer yards, generator yards, fuel storage, cooling equipment, water treatment, loading, parking, fire/service roads, stormwater, acoustic buffers, utility corridors, and expansion all compete for the same buildable envelope. These elements must be sized from quantity drivers and placed according to access, utility, airflow, fire, noise, and replacement logic.
Test phasing as a geometry and utility problem
Phase 1 should not block the utility route, fire loop, cooling expansion, generator growth, or the second building. Temporary construction access and laydown should not consume the only future phase. The plan should show which infrastructure is shared, oversized, duplicated, or deferred—and how the site remains operational while later phases are built.
Use sensitivity ranges instead of false precision
Early feasibility is strongest when it shows how land demand changes under low-, base-, and high-density assumptions. Rack density, PUE, cooling strategy, generator module size, stormwater reserve, and buffer depth can each move the answer. A range reveals whether the site remains viable under uncertainty or works only under one optimistic configuration.
The acquisition decision is a capacity confidence statement
The output should distinguish nominal target capacity, planning-grade fitted capacity, utility-confirmed capacity, and capacity dependent on future approvals or upgrades. That distinction is more useful than one large MW label because it tells the buyer which portion of the value proposition is physically supported and which portion remains conditional.
From MW claim to site-fit evidence
| Translation | Primary driver | Output | Risk if omitted |
|---|---|---|---|
| IT load definition | Owner/tenant program | Phase 1, buildout and ultimate IT load | Utility and land capacity are overstated |
| Rack count | kW per rack | Approximate racks and density scenario | Footprint is detached from IT strategy |
| Module count | MW per module | Repeatable data hall blocks | Phasing and building geometry are arbitrary |
| Gross building | Support-space strategy | Approximate footprint and program basis | White space is mistaken for total building |
| Electrical/generator/cooling yards | Facility load, redundancy and system modules | Quantity-based yard allowances | Exterior infrastructure is under-sized |
| Access and civil reserve | Vehicles, fire route, impervious area and buffers | Roads, loading, stormwater and mitigation | Site appears to fit only on paper |
| Capacity confidence | Utility, geometry and approvals | Confirmed / plausible / conditional capacity | Acquisition price relies on speculation |
Early screening checklist
What to verify before advancing this site.
- IT load distinguished from facility load and utility service
- Phase 1, committed buildout and ultimate campus capacity separated
- Rack-density and module assumptions stated and sensitivity-tested
- Building gross-up tied to identifiable support spaces
- Electrical, generator, cooling, fuel, water and utility corridors carried
- Parking, loading, fire access, stormwater, buffers and laydown included
- Phasing preserves future utility, access, equipment and construction routes
- Capacity labeled as fitted, confirmed, conditional, or aspirational
What DCFR would flag
Risks surfaced at the screening stage.
DCFR would flag MW claims that are not tied to load definitions, rack and module assumptions, quantity-based support yards, phasing, civil reserve, utility evidence, or a clear confidence classification.
Professional confirmation required
Items requiring licensed validation.
Final IT program, rack density, PUE, MEP topology, redundancy, utility service, structural loading, equipment selection, cooling, civil design, fire access, acoustics, cost, schedule, and approvals require professional confirmation.
Final takeaway
Megawatts create value only when the team can show how they become a buildable, serviceable, phased, and utility-supported campus.
Screen up to 20 candidate sites before selecting one for the full DCFR report.
Each DCFR Report Package includes a preliminary 20-site comparison PDF / export package plus one selected planning-grade feasibility report.