Is there a rolling blackout schedule for my area?

In the US there is no permanent, published national load-shedding schedule. Rolling blackouts are rare, emergency measures used only when the grid is close to failing (extreme heat or cold, or a generation shortfall). If they're ordered, your utility and grid operator announce affected areas and rough timing at that moment — usually in blocks of an hour or two — through their outage map, app, texts, and local media. Check your electric provider directly.

What is the difference between load shedding, load management, and a rolling blackout?

They describe the same idea: deliberately cutting power to some customers for short periods to keep total demand from exceeding available supply, so the whole grid doesn't collapse. “Load management” is the utility term; “rolling blackouts” describes rotating the outage between neighborhoods so no one area is out for too long.

Why do utilities cut power on purpose?

During a grid emergency — a heat wave spiking air-conditioning demand, a deep freeze (like Texas in Feb 2021), or lost generation/transmission — demand can outstrip supply. Controlled, rotating outages are a last resort to prevent uncontrolled, grid-wide failure that would take far longer to recover from.

How long do rolling blackouts last?

Each rotation is usually short — often 15 minutes to a couple of hours per area — then power moves to the next block. The overall event can last hours or, in severe cases, days, until the supply/demand balance is restored.

Rolling blackouts & load shedding

What controlled outages are, why they happen, whether there's a schedule, and how to be ready.

Last updated July 9, 2026

Preparing for any outage, not just a controlled one? See what to do during a power outage.

What is load shedding?

Load shedding (also called load management or rolling blackouts) is when a utility or grid operator deliberately turns off power to some customers for short periodsso that total electricity demand doesn't exceed the supply the grid can safely deliver. Rotating the outage between neighborhoods keeps any single area from staying dark too long and prevents an uncontrolled, grid-wide failure that would be far harder to recover from.

Why it happens

It's a rare, last-resort emergency measure. It shows up during extreme heat (air-conditioning demand spikes), deep cold (heating demand plus frozen generation — as in the February 2021 Texas freeze), or when generation or transmission is suddenly lost. When demand threatens to outstrip supply, controlled rotating outages protect the wider grid.

Is there a schedule for my area?

Honestly: there is no permanent, published national load-shedding schedule, and we don't invent one. Because these events are rare and driven by real-time grid conditions, affected areas and timing are announced only when an event is called, by your utility and grid operator. The reliable move is to know your provider and turn on alerts before an emergency:

Find your county on the live map and open your electric provider's page for their official outage channel.
Turn on email alerts for your county (on any county page) so you hear about significant outages fast.
Check your county's natural-hazard & outage risk profile to see what it's prone to.

How to prepare

Keep phones and a power bank charged when a heat wave or freeze is forecast.
A portable power station or generator keeps the fridge, medical devices, and lights running.
Keep the fridge/freezer closed — food stays cold for hours if you don't open the door.
Know your medical needs (powered equipment) and your utility's medical-priority program.
During a rotation, turn off large appliances so you don't trip breakers when power returns.

FAQ

Is there a rolling blackout schedule for my area?: In the US there is no permanent, published national load-shedding schedule. Rolling blackouts are rare, emergency measures used only when the grid is close to failing (extreme heat or cold, or a generation shortfall). If they're ordered, your utility and grid operator announce affected areas and rough timing at that moment — usually in blocks of an hour or two — through their outage map, app, texts, and local media. Check your electric provider directly.
What is the difference between load shedding, load management, and a rolling blackout?: They describe the same idea: deliberately cutting power to some customers for short periods to keep total demand from exceeding available supply, so the whole grid doesn't collapse. “Load management” is the utility term; “rolling blackouts” describes rotating the outage between neighborhoods so no one area is out for too long.
Why do utilities cut power on purpose?: During a grid emergency — a heat wave spiking air-conditioning demand, a deep freeze (like Texas in Feb 2021), or lost generation/transmission — demand can outstrip supply. Controlled, rotating outages are a last resort to prevent uncontrolled, grid-wide failure that would take far longer to recover from.
How long do rolling blackouts last?: Each rotation is usually short — often 15 minutes to a couple of hours per area — then power moves to the next block. The overall event can last hours or, in severe cases, days, until the supply/demand balance is restored.

Educational guide. MassOutage does not operate the grid or publish live load-shed schedules — always follow your utility and local emergency officials during an event.