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Bill would codify current practice of ERCOT–TCEQ coordination on environmental limits for backup generation; Sierra Club and local leaders support with caveats
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Summary
Senate Bill 2321 would codify existing practice that allows ERCOT to notify the Texas Commission on Environmental Quality (TCEQ) to exercise enforcement discretion during emergencies so larger loads can operate backup generation; supporters urged documentation and reporting safeguards.
Senate Bill 2321, sponsored by Senator King, would codify the administrative practice whereby ERCOT notifies the Texas Commission on Environmental Quality (TCEQ) when generators must temporarily exceed permit limits during emergency grid operations.
Senator King said the bill would formally set in statute the existing practice that allows ERCOT to notify TCEQ when backup generation needs to run outside normal permit hours during grid emergencies. He said the bill is intended to help large industrial customers and data centers coordinate operation of backup diesel or other generation during load-shedding events without facing immediate enforcement actions, and to give those customers regulatory certainty.
Cyrus Reid of the Lone Star chapter of the Sierra Club told the committee he supports SB 2321 but urged stronger documentation requirements. Reid recommended that emissions events be reported through TCEQ’s STEERS system and that facilities be required to maintain operational records and environmental controls so deviations are traceable and limited to commercially reasonable actions. Michael Looney of the San Angelo Chamber of Commerce and other regional economic-development witnesses voiced support, saying codification reduces uncertainty for manufacturers and data centers that rely on backup generation during rare grid events.
Senator King said ERCOT had told the committee that “no environmental group has ever protested the current practice,” and witnesses urged the bill include clearer expectations for recordkeeping and reporting. Resource witnesses from ERCOT participated as a nonvoting resource; public testimony closed and the bill was left pending.
Supporters said SB 2321 balances reliability and environmental safeguards if the bill explicitly requires documentation of deviation events and provides TCEQ with the ability to assess whether operators took ‘commercially reasonable’ steps to minimize emissions during emergency operations.
