California Power Providers Will Issue Conservation Warnings
Businesses should prepare for load-management requests as utilities brace for a coming heatwave.
Updated on Oct. 5, 2026 in Utilities
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California utility providers are preparing to issue voluntary power conservation warnings due to a forecast heatwave. The California Independent System Operator will enforce Restricted Maintenance Operations from October 12 to 13 to support grid reliability.
Why it matters
Scorching temperatures are expected to drive significant spikes in air conditioning demand. Utilities are requesting conservation to manage this load and mitigate the risk of unplanned power outages across the state.
The Restricted Maintenance Operations notice covers a 12-hour window daily from 10 a.m. to 10 p.m. Utilities advise operators to limit major appliance usage between 4 p.m. and 9 p.m. and maintain thermostat settings at 78 degrees.
The players
California Independent System Operator
The agency responsible for managing the reliability of California's high-voltage power grid and energy markets.
Southern California Edison
A major investor-owned utility providing electricity to millions of customers across Southern California.
Los Angeles Department of Water and Power
The largest municipal utility in the United States, providing water and power services to the City of Los Angeles.
Gavin Newsom
The Governor of California who exercises executive oversight over state-level regulatory policies.
The details
The Restricted Maintenance Operations notice limits actions that could jeopardize generator or transmission availability to ensure the grid can meet increased demand. Utilities are asking businesses to shift heavy power usage away from the 4 p.m. to 9 p.m. window to reduce overall stress on electrical infrastructure. Southern California Edison and the Los Angeles Department of Water and Power are the primary entities managing these demand-side protocols for local commercial operators.
Timeline
September 30: Governor Gavin Newsom vetoed AB 1813.
October 3: Southern California Edison issued a heat-related warning to customers.
October 12-13: Restricted Maintenance Operations notice in effect for the state grid.
Market Landscape
This grid management strategy follows the veto of AB 1813 by Governor Gavin Newsom on September 30. The issuance of these notices highlights the ongoing reliance on voluntary conservation as a primary mechanism to prevent outages during extreme heat events.
Operators should review their energy consumption schedules now to avoid heavy equipment usage between 4 p.m. and 9 p.m. Adjusting building climate controls to the recommended 78-degree threshold can help comply with voluntary utility conservation goals.
The takeaway
Reliable power access remains a critical operational dependency during extreme temperature fluctuations in the state. Monitor local utility bulletins for real-time demand alerts throughout the October 12 to 13 window.
Further reading
Read more about grid stability strategies in California Utilities.
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Do you plan to adjust your household energy use during extreme heat waves?
