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DATA CENTRE POWER & GRID READINESS

Secure the power pathway before committing the project.

A decision guide for APAC developers, facility owners and energy advisers: connect utility capacity, phased demand, resilience and commercial evidence into one project brief.

Read the guide Check project readiness

Version 1 · Reviewed 25 October 2026 · Educational screening. Capacity approval, protection, transient performance and investment approval require project-specific studies. The diagnostic measures evidence completeness, not engineering compliance.

01 / DECISION GUIDE

From questions to verifiable decisions

1. Establish the demand boundary

Separate IT load from total facility demand. PUE is total facility energy divided by IT energy over a defined period; use time-matched power estimates for screening, and do not treat an annual PUE as proof of instantaneous peak demand. Map commissioning phases, cooling, losses and auxiliary loads at the utility meter.

Issue a phase-by-phase load schedule with IT MW, facility MW, ramp dates and diversity assumptions.
Collect 12 months of interval data for an existing facility; use a documented representative profile for a new facility.
Separate training, latency-sensitive inference and genuinely deferrable work. Any workload flexibility needs IT-owner approval and SLA limits.

2. Confirm the grid pathway and time to power

A nearby substation is not a capacity offer. Record import and export limits, energisation milestones, reinforcement responsibilities and the validity of the utility's written response. Review upstream common-mode dependencies when considering two supplies.

Request the connection-point voltage, available firm capacity and study requirements from the utility.
Build a milestone register: application, study, offer, customer works, network works, testing and energisation.
Compare the earliest supported power date with each development phase. Leave unconfirmed dates visibly provisional.

3. Assign UPS, BESS and generation different duties

UPS continuity, BESS energy management and standby generation are distinct functions even if a vendor combines equipment. For each credible event, identify who maintains voltage and frequency, who supplies energy, how switching is confirmed and how the system recovers.

Define supported loads, permitted interruption, autonomy, N-1/maintenance cases and recovery order.
Reserve energy and power before allocating capacity to tariff savings or market services.
Test utility loss, generator start failure, common-mode faults, communications loss and failed reconnection in an agreed FAT/SAT plan.

4. Model cost without counting the same capacity twice

Use the actual tariff and demand-charge rules, metering interval, fuel delivery cost, maintenance, battery degradation and replacement assumptions. Compare options against the same demand, reliability scope, study horizon and discount rate. Grid electricity savings alone are not a complete business case.

Separate equipment CAPEX, installed CAPEX, connection works, recurring OPEX and replacement cash flows.
Run energy cost and dispatch simulations at a suitable interval; report NPV and sensitivities only after input quality is established.
Run downside cases for load ramp delay, connection delay, tariff change, fuel interruption and capacity loss at end of life.

5. Keep AI/ML analysis at the right time scale

AI workloads can introduce rapid power variation, but the amplitude and coincidence must be measured or supported by vendor data. An hourly cost model cannot validate UPS ride-through, harmonic limits or transient stability. ML forecasting is useful only if it outperforms a transparent baseline on unseen data.

Use interval data for energy economics and finer event records for fast electrical phenomena.
Record model training period, hold-out tests, prediction errors and fallback operation; do not present synthetic curves as measured data.
Treat ML forecasts as uncertain inputs. Keep safety functions and operating limits enforceable without the forecast.

6. Make the next decision explicit

A useful pre-feasibility output identifies which option to study next, what could disqualify it and what evidence must arrive before procurement. A green-energy purchase does not by itself demonstrate physical backup capability or continuous carbon-free supply.

Create one comparison with capacity, time to power, resilience scope, permits, costs and unresolved dependencies.
Assign an owner and due date to every critical evidence gap.
Proceed to specialist connection, reliability, protection and commercial studies before design approval or an investment commitment.

02 / DATA REQUEST

Turn gaps into a trackable request

Keep unknowns visible. Download the editable checklist and add evidence, status, owners and dates.

Needed before sizing

Demand

IT MW and facility MW by phase; PUE basis; interval data; short-duration events

IT / facility lead · CSV time series + phase schedule

Critical gate

Grid

Connection voltage; import/export limits; firm capacity; fault level; energisation dates

Utility / connection lead · Written utility response + study scope

Critical gate

Continuity

Load classes; maximum interruption; autonomy; maintenance/failure scenarios

Facility operations · Approved resilience requirement

Confirm usable, not only nameplate

Assets

UPS/BESS/generator ratings; SOC limits; start times; fuel inventory; warranties

OEM / electrical lead · Datasheets + single-line + operating limits

Identify constraints

Site

Space; temperature; flooding; fire access; noise/emissions; fuel permissions

Site / permitting lead · Drawings + permit register

Date and currency required

Economics

Metered tariff; demand rules; installed quotes; maintenance; replacements; discount rate

Finance / energy lead · Tariff + dated quotes + assumptions register

Optional; never assume

Flexibility

IT SLA; cooling limits; eligible market; control authority; rebound; reserve restrictions

IT + operations + market adviser · Written permission + programme terms

Track to next gate

Delivery

Target ready-for-service dates; utility works; supplier lead times; FAT/SAT ownership

Project director · Integrated schedule + risks/owners

03 / ILLUSTRATIVE EXAMPLE

Illustrative case: 10 MW IT first phase

Fictional teaching case, not a customer reference or quotation. Assume a coincident screening facility/IT power multiplier of 1.30, a 10 MW import cap, and a 4 MW / 8 MWh BESS. Assume a full 90% starting SOC, 20% minimum SOC, 95% discharge efficiency and 80% end-of-life capacity. For this simplified balance, auxiliaries are included in facility demand; no N-1 or transient validation is claimed.

Options against shared assumptions; not a recommendation ranking
Option	Screening result	Condition / next evidence
A · Grid-only phased ramp	10 × 1.30 = 13 MW facility demand; import deficit 3 MW. At the assumed multiplier, 10/1.30 = 7.69 MW IT is the cap.	Phase IT load below the cap; obtain confirmed reinforcement date. UPS/standby duties still need design.
B · Grid + BESS bridge	4 MW PCS can cover a 3 MW power gap in this simplified check. EOL delivered energy = 8 × (0.90−0.20) × 0.95 × 0.80 = 4.256 MWh; duration = 1.42 h.	Fails a continuous 24 h gap (72 MWh/day). Charging headroom, availability, reactive power and resilience reserve reduce usable service further.
C · Grid + dispatchable bridge	A 3 MW net continuous generation contribution could close the arithmetic gap, before reserve/derating checks.	Requires permits, dependable fuel, maintenance/N-1 design, electrical studies, quotations and a credible commissioning date.

With no charging window, an 8 MWh battery does not solve a continuous 3 MW supply shortfall.
Do not rank A/B/C by NPV: no tariffs, quotations, fuel costs or equivalent reliability designs have been supplied.
Next decision: confirm the utility milestone and whether the 3 MW deficit is continuous, intermittent or avoidable through phased IT deployment.

04 / EVIDENCE DIAGNOSTIC

Six evidence checks, with next actions

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01 · Critical gate