Regional analytics

A ratio of an inference to a measurement is weaker than either. The area total is reported and whole-area, covering every existing user; the Helios figure is inferred from acreage for sites that in most cases are not built. This is a sense of scale, not a forecast of what the area will consume.

Public supply is the municipal water a data centre on the city system competes for. Agricultural and thermoelectric withdrawals are reported separately and are not in this denominator.

This is not spare capacity. Existing demand already consumes most of that figure, and Helios does not know how much, so a share of total capacity is not a share of what is unused. Whether any individual site can be served is an interconnection question, answered by filings Helios cannot read.

The only comparison here that needs no unit conversion: both sides are a peak figure in MW, so it carries one assumption fewer than the annual-energy one. Net summer capacity is used rather than the more-quoted nameplate figure because it is what the grid can deliver on the afternoon that decides whether there is room.

A ratio of an inference to a measurement is weaker than either. The area total is reported and whole-area, covering every existing user; the Helios figure is inferred from acreage for sites that in most cases are not built. This is a sense of scale, not a forecast of what the area will consume. The denominator is statewide while the sites are in East Valley, Arizona, so this understates the local share.

Capacity is not consumption. This converts one to the other so it can be set beside a reported energy total, and inherits every assumption in the capacity estimate before adding its own.