Ask the Grid
Explore the gridLive

The map

Layers, grid events, weather, congestion, the time scrubber, selecting assets, dropping a pin, and search.

Open the ERCOT map
Access
No account required
Reading time
9 minutes
Reviewed
Jul 26, 2026
Maintained by
Product
On this page · 6 sections
  1. Data layers
  2. Grid events
  3. Move through time
  4. Price & congestion
  5. Select & focus
  6. Search the grid

Data layers

Toggle what the map draws from the layer panel. Search the panel to find a layer fast.

The Map content panel with layers grouped into Markets, Infrastructure, Generation by fuel, Reliability, and Weather.
The layer panel — markets, infrastructure, generation by fuel, and weather.

Markets & infrastructure

Turn on demand zones, price nodes (settlement points), transmission lines, generating plants, and substations. Plants are color-coded by fuel; lines by voltage.

Filter a layer

Narrow plants to a single fuel (gas, wind, solar, nuclear, coal…) or transmission to a voltage class, so the map shows only what you care about.

  1. 1Open the layer panel.
  2. 2Toggle a layer on, then use its fuel or voltage filter.

Weather & reliability

Overlay wind, temperature, precipitation, and cloud cover as rasters, plus a day/night boundary, live lightning strikes, and customer outages.

Grid events

Events keep their source identity, timing, and relationship to the grid.

Read events on assets and regions

Event indicators can attach to a verified node or line, a map shape, or an entire grid. Select an indicator to read a standalone event, select an asset to page through every current and upcoming event attached to it, or open the asset page to keep those events beside its market and operating context. The card shows the source publication time before you expand its details; when a provider does not publish one, it labels the warehouse evidence time as Observed instead.

  1. 1Open the Grid events layer on the map or the event view in Radar.
  2. 2Select an event indicator or an asset carrying one.
  3. 3Read Posted or Observed on the collapsed card, then expand Event details for status, timing, MW values, provider, dataset, and observation time.
  4. 4Dismiss an event from the card when you no longer need it in the current view.

Episodes, schedules, and observations stay distinct

A physical outage or operator action is an episode. A future commitment or operating-day plan is a schedule. A live system-wide capacity mix is an observation. Ask the agent to count, compare, or combine events and it keeps those forms separate instead of treating every feed row as another incident.

ERCOT planned and unplanned outages

ERCOT resource outages appear as per-resource episodes when the source reports an identity, with verified map-node attachments where a deterministic crosswalk exists. The seven-day-plus planned-outage report appears at grid scope by operating day, because it reports limits and aggregate approved or received MW rather than resource names. The latest planned versus forced or unplanned capacity split is also available as one short-lived grid observation.

A grid-scoped event does not imply that ERCOT reported no affected asset; it means the source record itself did not identify one.

Move through time

The timeline panel in 1D mode with series rows for Load, Price, Temperature, and Wind underneath the day scrubber.
Show series to compare time-aware map layers against the same playhead.

The time scrubber

Time-aware layers follow one shared cursor; static infrastructure such as lines and substations stays fixed. In 1D mode, the scrubber covers the selected grid-local calendar day from 12:00 AM through 11:59 PM. The map, info cards, and open charts with time-indexed data move together.

  1. 1Drag the playhead, or use ← and → to step the timeline when it is open.
  2. 2Use the calendar or previous/next buttons to jump to another day.
  3. 3Use 7D or 30D to replay a multi-day window ending on the selected day.
  4. 4Press reset to live to snap back to the current operating view.

The LIVE marker shows where now falls on the selected day; future or unavailable data can still be on the track, and layers gray out when they do not have values.

Show multiple series

Use the chart button on the timeline to show or hide compact series rows. The rows follow the layers that are turned on and the current map focus: Load follows zones, Price follows nodes, Generation appears for a selected plant, and weather rows such as Temperature and Wind appear when those map layers are active.

  1. 1Click the live time in the header, or the timeline button on the map, to open the timeline.
  2. 2Click the chart button to show series rows below the scrubber.
  3. 3Turn on Wind or Temperature in Map content to add those weather rows.
  4. 4Select a zone, node, or plant to scope the matching series to that asset; clear the selection to return to the grid-wide row.

Temperature renders as a heat-map row with values on top; Wind renders as directional arrows, with arrow size and orientation reflecting the sampled wind over the current view.

Price & congestion

Price nodes can show the market price itself or the congestion separating one location from the rest of the grid.

The ERCOT map colored by congestion with price nodes across Texas and the Map content panel showing Congestion selected.
Congestion coloring reveals where nodal prices separate from the system-wide energy price.

Color ERCOT by congestion

Under Price nodes, Color by → Congestion shades each location by its price relative to ERCOT's system lambda. Cool areas are cheaper than the system-wide energy price; warm areas are more constrained and expensive.

  1. 1Open Map content and turn on Price nodes.
  2. 2Open Color by and choose Congestion.
  3. 3Use the timeline to replay how the separation moves through the day.

This is an observational market-price view built from ERCOT public data, not a power-flow model.

Compare day-ahead with real time

DA vs RT colors each node by how differently congestion settled in real time from what the day-ahead market priced. Relative contrast rescales the current moment when absolute differences are small.

Select & focus

Click to select

Click an asset to open its info card. Selecting another asset replaces the current single selection.

Box, lasso, and additive selection

With a free account, Shift+drag draws a box around visible assets, lasso traces an irregular selection, and Shift+click adds or removes one asset without replacing the others. The comparison card and agent receive the complete selected set.

Drop a pin

With a free account, switch on pin mode and click anywhere to drop a location pin. The agent uses it as a focus point—handy for "what's near here?" questions.

Basemap & camera

Switch between a flat basemap and satellite imagery, and zoom or pan freely. From an info card you can zoom straight to that asset.

Search the grid

The grid search dropdown showing results grouped by kind — a generation plant and transmission lines — with a Tab-to-agent option.
Search results grouped by kind, with Tab to hand the query to the agent.

Find anything by name

Search across plants, zones, price nodes, substations, transmission lines, and map overlays. Results are grouped by kind.

  1. 1Press ⌘K (or /) to focus search.
  2. 2Type a name and pick a result to fly to it on the map.
  3. 3Or press Tab to send your query to the agent instead.

Did this guide get you unstuck?

One click is enough. No message or account required.