Data Centre Site Selection in the Philippines: Dual Utility Feeds and Generation First, Flood and Typhoon Risk as a Veto

Decision order: power first, rent last

The order is: utility capacity and feed diversity, then generation and fuel autonomy, then flood, wind and seismic exposure, then physical separation of fibre routes, then structure and equipment access, then cooling and water, then staffing, then latency to users, and last rent. If the first two cannot be secured, nothing below them matters.

Unpack the phrase "dual feed" into four questions. Do the two feeds originate at different substations, do they enter the site on different physical paths, do they run on shared poles or a shared duct bank anywhere, and can either one carry the full load alone. Many so-called dual supplies are simply two outgoing circuits from the same substation, so an upstream fault takes both. Ask the utility for these answers in writing rather than relying on the landlord's summary.

Available capacity and the upgrade path matter equally. How much can be delivered today, whether growth requires new lines or substation work, how long that takes and who funds it. Load grows year on year, and a site that satisfies phase one with no route to phase two becomes a constraint within a few years.

Interrogate on-site generation at three levels: whether the plant carries the full load including cooling rather than IT load alone, how many hours stored fuel supports, and whether refuelling tankers can reach the site during a storm or a flood. That last point is the one people miss — real autonomy is stored hours plus resupply feasibility, not the number on the tank.

How to verify: require a live transfer demonstration and record changeover time and any load disturbance yourself, and ask the utility for the outage history of that feeder. Regional patterns are in how often power actually fails, equipment logic in generators and UPS, and office-floor criteria in siting software and BPO operations. For individual matters consult a licensed Philippine attorney; this is not legal advice.

Flood and typhoon exposure is a veto, not a scoring factor

In the Philippines, flood and wind exposure should not enter a weighted scorecard. It should act as a gate: a site that fails is eliminated however attractive it looks elsewhere. The reason is simple — a flooded hall or stripped rooftop plant is not an outage measured in hours but a rebuild measured in months.

How to check flooding yourself. Look for waterlines on exterior and boundary walls, where silt marks after a wet season are unusually informative. Ask neighbouring residents and small shops how high the worst recent event reached and how long water took to drain. Compare site level against the adjoining road, trace where drainage actually discharges and whether downstream channels have been built over. Then visit during heavy rain and watch where water collects and how fast it clears. Regional patterns are in rainy season and urban flooding.

How to assess wind. Storms are annual, so the question is exposure and construction: how rooftop plant, cooling equipment and antennas are anchored, how façades and roller shutters perform under wind, whether neighbouring structures or mature trees can become debris, and whether local work stoppages and road controls after a signal is raised would prevent engineers reaching site. Signal levels and stoppage rules are in typhoon signal levels.

Other hazards pass the same gate. The country is seismically active, so ground conditions, proximity to fault traces and liquefaction-prone areas, and for coastal parcels storm surge and salt corrosion all belong in feasibility work. Placing generators, switchgear or batteries at basement level in a flood-prone district is the single most common fatal design decision, and it is usually made to save podium space rather than out of ignorance.

State the conclusion plainly as eliminate, retain with mitigation, or pass, and record it in the feasibility report — see how to run a Philippine feasibility study.

Fibre routes must be physically separate, and latency must be measured

Two carriers are not redundancy. What matters is whether the two routes are physically separate: entries on different sides of the building, different municipal duct routes, no shared poles or trenches, and different upstream aggregation points. Any shared segment means one excavator can cut both.

Ask each carrier for a route description and entry point location, then compare the paths on a map from the building back to the aggregation node and look for overlap. Carriers will engage with this before you sign; afterwards you take what exists. Establish too whether the last mile is aerial or underground, because their storm-season vulnerability is very different.

Do not accept quoted latency — measure it. Sample from the network positions your users actually occupy, such as the city where your customers sit or the cloud region you must reach, toward a test address at the candidate facility, over long windows and across different times of day, recording the distribution and packet loss rather than reading the minimum from a single ping. Inter-island routing and international transit frequently matter more than straight-line distance, and daytime and overnight results can diverge sharply.

The carrier ecosystem matters more than any single circuit. Count how many operators are already present in the building or park, whether cross-connects are permitted, and whether neutral interconnection exists. More operators means more bargaining power and more genuine diversity; a building only one carrier can enter leaves you exposed for the life of the lease. Provider basics are in choosing a broadband provider and fault escalation in who to call when the line drops.

Fix in the contract: availability commitments, fault response and on-site attendance times, your right to bring in a second carrier, and the mechanism for adding bandwidth. Those clauses are what you hold on the day a route is cut, and they are far easier to obtain while the carrier is still competing for your business than after the circuits are live.

Structure, equipment access and permitted use

Three building attributes govern feasibility: slab capacity, whether the equipment can physically get in, and whether exhaust, heat rejection and noise can be discharged lawfully. All three are expensive or impossible to change later, so settle them during site selection.

Loading. Racks, battery strings, UPS units and transformers impose loads well above ordinary office design, and rooftops must carry cooling plant. Obtain structural drawings and written design loads, have a structural engineer review them where the margin is thin, and remember that a concentrated load and a uniformly distributed load answer different questions.

Walk the equipment route. Transformers, generators, UPS units and racks are heavy and large: can heavy vehicles reach the street, is there room to crane, what is the narrowest clear width and height of every opening, what are the goods-lift rating and car dimensions, how tight are the corridor corners, and what temporary loading will the slabs along the route accept. If one segment fails, equipment must be dismantled or re-specified, which changes both budget and programme. The same verification method applies to venues — see the load-in section of siting an events venue.

Emissions and noise. Generator exhaust position, noise impact on neighbours, and fuel storage quantity and fire classification all need confirming early; in dense residential districts even routine night testing can attract complaints.

Permitted use and park status. Confirm whether the registered use allows this type of facility, whether conversion requires a change of use, and how building and fire approvals run; alteration approvals are covered in fit-out permits. If incentives are part of the plan, note that eligibility is normally tied to registering in a particular zone and building — see the economic zone guide and ecozone versus investment-board incentives. The lease must state expansion rights, rights over roof and risers, and an exit if approvals are refused — see address and lease documents.

Cooling, water, and where the round-the-clock engineers come from

Tropical heat and humidity turn cooling from an engineering choice into a siting question: whether the location has reliable water, whether noise is acceptable, and whether enough power exists to cool the load all constrain which systems are viable.

Settle water first. If the design uses evaporative or water-cooled systems, verify supply reliability, water quality and hardness, on-site storage, and the contingency when mains supply stops — whether tankers can reach the site and how quickly. Check the discharge side too: capacity to accept cooling blowdown and whether treatment is required. Supply basics are in water supply and billing and pressure problems in dealing with low pressure. Where water is unreliable, air-cooled designs shift the burden back onto electricity — which returns you to the first criterion.

Size cooling redundancy for the hottest days, not the annual average, and confirm whether cooling is interrupted during a power transfer and how long temperatures take to recover afterwards. That answer sets the availability level you can honestly commit to.

Staffing round the clock is mandatory. You need electrical, mechanical, fire-systems and network duty engineers plus security. Verify that such technicians live within a realistic commute, that night transport is safe and dependable, that staff can reach site during storms and floods, and whether duty accommodation will be necessary. A remote, cheap parcel usually pays for itself in unfillable night rosters.

You compete for these people with utilities, manufacturing and the BPO sector rather than with other operators. Test the market with a live job advertisement in the district and measure responses, show-up rates and pay expectations before you commit to the address, because a roster you cannot fill converts directly into unattended alarms at night. Work authorisation for foreign technical staff is covered in the Alien Employment Permit, and a neighbouring sector where staffing is address-bound in siting an elderly care facility.

Approvals, data location requirements and six recurring traps

Approvals arrive from four directions: building and use classification, fire safety including gaseous suppression and battery rooms, environmental matters covering generator emissions, noise and fuel storage, and sector rules on where data may be hosted. Establishing jurisdiction before construction is far cheaper than retrofitting compliance.

Fire deserves particular attention: halls commonly use gaseous suppression, which is assessed differently from sprinklers; battery rooms carry additional ventilation and separation requirements; and diesel is a controlled flammable with limits on quantity and storage method. Certification and acceptance testing are covered in fire equipment certification and acceptance.

Hosting location is sometimes not a technical choice. Regulated sectors, particularly finance and payments, constrain where systems may be hosted and how data is processed, so confirm your customers' obligations before siting — see fintech and payments: hosting location is regulated.

Trap one: treating "dual" as two cables. Without confirming substations and physical paths there is no redundancy.

Trap two: reading nameplates instead of witnessing a transfer. Until you have watched one, you do not know whether load drops.

Trap three: insuring hazard risk instead of avoiding it. Insurance replaces property; it does not replace downtime, contractual service credits or the customers who leave afterwards.

Trap four: no upgrade path. Sufficient for phase one and impossible for phase two is the classic mid-life failure, and it surfaces exactly when the business is finally growing.

Trap five: generators, switchgear or batteries in a basement. In a flood-prone district this alone should disqualify the design.

Trap six: comparing sites on rent. Differences in available capacity, route diversity, equipment access and staffing dwarf any rent differential, and unlike rent they cannot be renegotiated later. City-level comparison is in comparing business costs across cities, and structured site visits can be arranged through Yixing's market-entry and site inspection support. For individual matters consult a licensed Philippine attorney; this is not legal advice.