What the site covers

Load, generation by fuel, real-time locational prices and operator alerts for 8 markets: ERCOT, PJM, MISO, SPP, CAISO, NYISO, ISO New England and Ontario’s IESO. Each page is built from that operator’s own published files and links back to them.

Not included: anything the operator does not publish. Several operators publish no reserve margin and some publish no alert feed; those sections say “not available” rather than showing a zero. Data that has gone stale is labelled stale.

The EIA-860M operating inventory: 14,659 plants, 28,318 generating units, 1,409 GW of nameplate capacity across 51 states. Split into twelve fuel families with a national map, a page for every state that has one, and a page per plant carrying county, operator, unit count, operating year, status and coordinates. Planned projects get their own pages.

Not included: generation output, emissions, ownership structure, power purchase agreements or interconnection queue position. None of those is on EIA-860M. EIA surveys plants of 1 MW and above, so smaller sites and rooftop solar are absent from the source itself.

1,956 facilities across 48, from two open sources kept separate and labelled row by row: county and city permit GIS layers, which carry building status, floor area, parcel and nearest substation; and OpenStreetMap, which carries name, operator, website and a point.

Not included: commissioned megawatts, tenants, lease terms and utilisation. No public record states any of them for a US data centre, so no page here states them. And no complete public roster exists, so every count on those pages is presented as a floor.

Close readings of the filings that decide projects: FERC orders, ISO tariffs, state commission rules and planning reports. Every figure in a piece is sourced to one of the documents listed on it, and linked.

Repeated captures of utility hosting-capacity and interconnection data, kept over time so the changes are visible — PG&E integration capacity analysis and grid needs assessment, the large-load request queue, and a change feed across captures.