Halls on the outside, generation in the middle
Every hall sits on the perimeter with a short, straight run back to the generator spine. No hall depends on a neighbour for a cable route, so a fault in one hall stays in that hall.
Everything inside the fence.
The campus masterplan, the 640MW captive plant, and the 30 million cubic metre reservoir. All three are already built or under construction, so there is no queue and no dependency on external approvals.
Campus masterplan
Nine parts, one fence line
Four 50MW halls, central diesel spine, captive plant, tank row and 220kV substation — short runs, symmetrical distribution.
On the plot
Short cable trenches. Same path to every hall.
Daylight view of the Phase 1 plot. The four 50MW halls sit either side of the central diesel spine. The 640MW captive plant is to the north-west, already built and owned. The reservoir lies 20 m south of the boundary and feeds the tank row.
Every hall sees the same distance to generation, the same water head, the same fibre path to Singapore.
4 × 50 MW halls
22 m hall height
30–40 ha Phase 1
Energy path
Plant → SS → spine → halls
Orange path lights in sequence when the figure enters view.
FIG. POWER · Plant → SS → spine → H1–H4 · flow runs the full feeder into each hall
Masterplan
Physical specification
| Element | Quantity | Dimension or rating | Note |
|---|---|---|---|
| Data halls | 4 | 50 MW IT each, 3 floors | Total Phase 1 IT load 200 MW |
| Hall height | 22 m | Clear height 12 m | Headroom for GB300 pipework and roof plant |
| Floor loading | ≥ 20 kN/m² | Raised floor in hall, slab in plant rooms | |
| Generator buildings | 2 | 80 × 2,500 kW | N+1, centre line between halls |
| Fuel store | 1 | 48 h at full load | Below grade, pumped to day tanks |
| Substation | 1 | 220 kV, dual route | Feeds 800 V DC distribution |
| Water tanks | 8 | 1,250 m³ each | 10,000 m³ on site |
| Site area, Phase 1 | 30 to 40 ha | Serviced, title clear | Land banked to 3 GW |
Why it is laid out this way
Three decisions that cost money once and save it later
22 m halls, not 12 m
Building taller once is cheap. Retrofitting a taller hall later, once a liquid cooling loop and overhead busway are already installed, is not. The headroom is there from day one for whatever comes after GB300.
Water on the north edge, reservoir to the south
The tank row is a 20 m pipe run from the reservoir through treatment, not 400 m. Gravity helps. The 48 h fuel store is below grade so it does not compete for floor plate.
Arrival
Gate on the west. NOC sees every truck.
The main gate faces the access road from Galang town. Security checkpoint, vehicle wash, and a covered staging bay for inbound server crates. The operations office looks onto the yard.
Visitor access is controlled to the office and the viewing gallery. The data halls are behind two doors and a biometric reader.
Power
640MW on site. Phase 1 uses 39% of it.
640MW
Installed generation
Owned, not contracted. No queue position to hold.
$0.088/kWh
Delivered cost
Roughly a third of Singapore commercial power.
1.8%
Transmission loss
Plant to rack. AC distribution lands around 5%.
99.99%
Monthly availability
Written into the lease, with rent credit if we miss it.
Distribution
800 V DC busway at 1,500 A feeds each hall. Silicon carbide solid-state transformers convert from the 220 kV substation. Transmission loss from plant to rack is 1.8%, compared to roughly 5% for AC.
Redundancy
N+1 diesel fleet with 48 hours of fuel at full load stored below grade. 20 MW / 40 MWh battery store absorbs load steps and provides instant ride-through.
Energy flow
From turbine terminal to rack
Generation — 80 × 2,500 kW generators, N+1. Each unit can hot-swap without dropping the load.
Switchyard — 220 kV collection, dual route. One route down, one route up, no single point of failure.
Conversion — Solid-state 220 kV to 800 V DC, silicon carbide devices, 98.2% efficiency.
Distribution — 800 V DC busway, 1,500 A per hall, overhead so every tap is visible and maintainable.
Rack entry — PDU shelves drop 800 V to 48 V DC at the rack, N+1 per shelf.
Fuel — Below-grade store holds 48 hours at full load. Day tanks auto-refill from the main store.
Battery buffer — 20 MW / 40 MWh LiFePO4 absorbs load steps, covers generator start-up, provides ride-through.
Testing — Weekly load-bank test, monthly full-load run, quarterly maintenance swap.
Monitoring — DCDC exposes bus voltage, current, and temperature to your DCIM via a read-only API.
Water
30 million cubic metres, 20 metres away.
30M m³
Reservoir capacity
Owned. Sitting at the south boundary, 20 m from the fence.
10M m³
On-site tankage
Eight tanks at 1,250 m³, fed from the reservoir.
10yrs+
Make-up reserve
Annual make-up is 6% to 7% of reservoir capacity.
0L
Municipal draw
Zero competition with local residential supply.
Closed loop
The cooling circuit is closed. The only water that leaves the site is water we treat and put back. No withdrawal permits, no competition with agriculture or residential supply.
Future proof
Beyond 1 GW we switch to seawater source heat rejection using the island's coastal position. That drops fresh water use toward zero.
The reservoir
The whole cooling budget, in one place
Size — 30 million cubic metres, 20 m deep. Enough for 10 years of make-up at current draw.
Treatment — Sand filters, UV, and chemical dosing. No biofilm, no scaling.
On-site tankage — Eight 1,250 m³ tanks buffer the supply. Dedicated fire pump house draws from the same reservoir.
Water detail