The "Texas Power Grid" plugin shows a collection of ERCOT information including wind and solar generation, system-wide prices, energy storage resource output, and ancillary services. The display shown on the TRMNL device can be chosen via the dropdown below. This plugin is not affiliated with ERCOT Inc. and uses publicly available data.

This plugin displays charts and metrics for the ERCOT interconnection, the power grid serving most of Texas.

Browse all possible displays and options at https://trmnl.ditherdata.com/.

(Update: 10/16/2026) Added Rotator option to show a new display with each rotation

(Update: 10/10/2026) Added Title option to each display and Show Yesterday for the Wind and Solar display

(Update: 10/4/2026) Introduced the Supply and Demand display which shows the ERCOT load and available capacity.

Use the Display option to choose from the following views:

• Rotate Displays (default): Shows each of the displays below in turn, moving to the next one each time the plugin refreshes.

• Supply and Demand: ERCOT's load, available capacity and net load for today, actual and forecast, or the six-day forecast of load and capacity. Net Load can be shown using the available display options.

• Wind and Solar: Actual wind and solar generation for today, plus forecasts through the end of tomorrow. Series can be stacked or overlaid.

• System-Wide Prices: Individual plots of hub and load zone prices, comparing today's real-time price with the day-ahead price. An all-prices view summarizes every hub and load zone in a single display.

• Energy Storage: Fleet-wide behavior of Energy Storage Resources (ESRs). Optional toggles add a "net energy" line showing cumulative ESR energy as a proxy for state of charge, and a box plot overlay comparing current behavior to the previous 30 days.

• Ancillary Services: Regulation services over the past two hours.