These definitions describe how this calculator uses each term. Project contracts and final engineering documents control.
- PUE · Power Usage Effectiveness
- Total site power ÷ IT-equipment power. A PUE of 1.40 means 100 kW of GPU servers and network equipment needs about 140 kW from the site. The extra 40 kW covers cooling, UPS losses, pumps, fans and controls. Lower is more efficient.
- Usable continuous site power
- Power the site can deliver continuously after required reserve and derating—not the breaker or utility nameplate maximum.
- IT load
- Electricity used by the GPU servers plus any entered network-fabric power, before facility overhead is added through PUE.
- Facility overhead
- Power used by cooling, UPS losses, pumps, fans, controls and other site systems. In this calculator it is total site draw minus IT load.
- GPU tranche
- A specific group of GPU systems with a known SKU, quantity, ownership or allocation evidence, and delivery window.
- GPU-ready site CAPEX
- The one-time build or retrofit cost needed to make the site deployable: electrical distribution, cooling, enclosure/racks, civil work, interconnect, installation and commissioning. It is not land and it is not GPU hardware.
- O&M / OPEX
- Recurring operating costs such as maintenance, staffing, security and service contracts. Electricity is shown separately here.
- Hosting fee
- The contracted amount paid to the site operator per critical IT kW each month. The model passes electricity through separately.
- Provider payout / offtake
- Contract revenue payable to the GPU owner or operator per GPU-hour. It is not the public retail token or API price.
- Utilization
- The share of available GPU hours that is contractually billable or underwritten—not theoretical server uptime.
- Balance of plant
- The supporting equipment and site work around the main modules: cabling, piping, switchgear, pumps, interconnect, civil works and commissioning.
- CDU / GA / SLA
- CDU: cooling distribution unit. GA: signed general-arrangement drawing that proves physical fit. SLA: contract defining service performance and remedies.