Public HIFLD transmission lines and substations across the CAISO footprint, drawn with its zones. Orient a project, point of interconnection, or development area against the network geography, then open the same layers on the live map.
The transmission-line and substation features in the HIFLD public inventory, shown across the CAISO footprint with the same layers available in Ask the Grid's live map.
California development runs through the transmission plan and the points of interconnection it opens. Use the public line and substation geography to see which corridors and substations sit near a site or queue cluster, then take deliverability, constraints, and available capability to CAISO's transmission planning and interconnection studies.
The transmission lines and substations published in the HIFLD public inventory, drawn across the CAISO footprint. It is geographic reference data — the operational network model, deliverability results, and real-time flows stay with CAISO and the participating transmission owners.
No. It shows where public lines and substations are, which is where a point-of-interconnection search starts. Which points are offered and what capability they carry come from CAISO's interconnection process and transmission plan.
The map is framed on CAISO. Parts of California are served by other balancing authorities — LADWP, the Balancing Authority of Northern California, and the Imperial Irrigation District among them — and the public inventory there belongs to those systems.
Yes. It opens the live CAISO workspace with the same transmission, substation, and zone layers and the same viewport shown on this page.