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December 5, 2025

Energy Storage

CAISO
CAISO Looks to Improve Visibility of Distributed Battery Storage
CAISO is working on an initiative to improve the visibility of distributed battery storage resources on the grid, especially for when they are needed for resource adequacy.
IESO
IESO to Expand Synchrophasor Data Requirements to Storage

IESO proposes to update its synchrophasor data requirements to include storage resources as part of its effort to expand the use of phasor measurement units in Ontario.

Clerk of the House
Trump to Sign Big Beautiful Bill into Law on Independence Day
The House of Representatives voted to pass the Senate version of its budget reconciliation package, the One Big Beautiful Bill Act.
David Maiolo, CC BY-SA-3.0, via Wikimedia Commons
Senate Passes Trump’s Big Bill that Slashes Clean Energy Tax Credits
The U.S. Senate met through the weekend and overnight June 30 to work on Republicans’ budget reconciliation bill, passing it 51-50 with Vice President JD Vance casting the tiebreaking vote. 
Shutterstock
Renewables Supporters Decry Late Change to Trump’s ‘Big Beautiful Bill’

Senators working through the weekend on Trump's “One Big Beautiful Bill” delivered renewable energy supporters an unexpected and unpleasant surprise in the form of proposed taxes that likely would stymie completion of projects already in the works.

CAISO
Local Congestion Causing Most California Curtailments, CAISO Says
Local line congestion is the primary cause of renewable curtailment in California — and the amount is increasing each year, CAISO said during its second-quarter Market Performance and Planning Forum.
© RTO Insider
ERCOT Board of Directors Briefs: June 23-24, 2025
ERCOT CEO Pablo Vegas has gone public with the grid operator’s internal terminology that is shaping the market’s path forward, defining it for his Board of Directors and stakeholders. 
PacifiCorp
Northwest Summers Now Include ‘Huge’ Energy Flows from California

Portland General Electric told Oregon regulators that after decades of electricity flowing from north to south through its system during the summer, the flow on a typical summer day has reversed.

ERCOT
Vegas: ERCOT Grid ‘Strong’ Heading into Summer
ERCOT CEO Pablo Vegas declared the state of the Texas grid to be "strong" as it heads into a summer where it expects a record peak demand.
© RTO Insider 
PJM MRC/MC Briefs: June. 18, 2025
Committee business included a quick-fix package to expand the definition of dual-fuel generation in the Reliability Assurance Agreement to include generation capable of running on a backup fuel type with off-site storage and dedicated delivery.

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