NOTICE DATE: April 1, 2026

NOTICE TYPE: R-A040126-01 Retail

SHORT DESCRIPTION: Posting of 2025 Texas Renewable Content Calculator for Reporting in 2026

INTENDED AUDIENCE: All Retail Electric Providers 

DAYS AFFECTED: July 1, 2026

LONG DESCRIPTION: As required by PUCT Substantive Rule 25.476, Renewable and Green Energy Verification, ERCOT has posted the 2025 Texas Renewable Content Calculator on ERCOT.com. This spreadsheet contains the following information:

• Percentage of total system MWh generated by fuel type from each Texas-based generator
• MWh-weighted average annual emissions rate for each Texas-based generator
• Statewide average fuel mix
• Statewide system average emission rates for each type of emission
• Default fuel mix and default emission rates

Rule 25.476(h) requires each Retail Electric Provider (REP) update the Electricity Facts Label (EFL) for each product currently offered or offered during the preceding calendar year so that its EFL displays the renewable energy percentages determined by using the 2025 Texas Renewable Content Calculator for generation purchased during the preceding calendar year. The rule also requires each REP report the renewable energy percentages to the registration agent, ERCOT, no later than July 1, 2026. 

Another Market Notice will be sent at a later date requesting that REPs submit EFLs to ERCOT pursuant to Rule 25.476(h).

ADDITIONAL INFORMATION: For more information on PUCT Substantive Rule 25.476 please visit the Electric Substantive Rules page of the PUCT's website.

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at ClientServices@ercot.com.

If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

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