Where does the public transmission inventory sit across BPA's system?
Public HIFLD transmission lines and substations across BPA's federal hydro system and the Northwest's high-voltage grid. Orient a site or interconnection request against the network geography, then open the same layers on the live map.
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Where does the public transmission inventory sit across BPA's system?
Public HIFLD transmission lines and substations across BPA's federal hydro system and the Northwest's high-voltage grid. Orient a site or interconnection request 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 BPA's balancing area with the same layers available in Ask the Grid's live map.
How to use it
BPA is a federal power marketing administration, not a market operator — it runs no LMP market, and its own detailed network models and planning studies go through its transmission service and interconnection processes. This view is built entirely from public data, so it answers the orientation question — where the lines and substations run — without that process.
What people ask
What does this map show?
The transmission lines and substations published in the HIFLD public inventory, drawn across BPA's balancing area. It is geographic reference data — the operational network model, line ratings, and real-time flows stay with BPA and the transmission owners it interconnects.
Is BPA a market like ERCOT or PJM?
No. BPA is a federal power marketing administration that runs the Northwest's high-voltage hydro-system grid. It runs no LMP market — prices at BPA locations shown elsewhere on Ask the Grid are CAISO's Western Energy Imbalance Market prices, not a BPA market clearing price.
Can I tell from the map where a project can interconnect?
It shows where the public network geography runs, which is the starting point. Whether a specific point of interconnection works is settled by BPA's own transmission service and interconnection studies.
Does “Open network map” restore this exact view?
Yes. It opens the live BPA workspace with the same transmission and substation layers and the same viewport shown on this page.