The scheduled shutdown notice from Cemig arrives with a specific day and time marked on your company’s calendar. By that date, someone in the operation will need to decide how the line, cold chamber, server, or surgical center will operate without the grid.
With the date set, you can check the schedule, separate what cannot stop, assign a value to the hours without power, and arrange the generator without rushing. Follow through to the end and reach the day of the notice with this plan in place.
What is Cemig’s scheduled shutdown and why does it happen
The scheduled shutdown is a temporary interruption that Cemig schedules in advance to carry out works and maintenance on the grid. According to the official scheduled shutdown page of Cemig, this work makes the service safer and of higher quality.
At home, a scheduled power outage is usually just an inconvenience, but for a company that depends on continuous power, it becomes a scheduled stop. Unlike an unexpected outage, it comes with notice. Knowing the day, you prepare the operation, inform the teams, and have the backup power ready before the grid is shut down.
How to check the schedule by city, neighborhood, or consumer unit
The schedule is available on Cemig’s own website, where you can search by city and neighborhood or directly by the consumer unit number. To receive notices by SMS or email, Cemig advises keeping your registration data updated on Cemig Atende Web.
Those with more than one consumer unit feel the difference more when the registration is up to date, like a factory with separate warehouses or a company with stores in different neighborhoods. Have questions about a date? Cemig’s customer service can be reached at phone 116.
Our recommendation is that the maintenance or facilities team regularly checks this, especially during weeks of important orders.
What in your operation cannot be without power during the window
Start with the list of what cannot stop, because from it comes the power the generator will need to deliver. Divide the equipment into three groups:
- Critical load, which needs to operate from the beginning to the end of the window, such as servers, cold chambers, and life support equipment.
- Important load, which can be turned back on later, but whose stoppage results in loss of production or raw materials.
- Load that can wait, such as lighting in administrative areas and equipment not in use during the shutdown time.
What falls under critical load changes depending on the type of operation. In an industry in Greater BH, it’s the automated line, which fails with voltage fluctuations. In a hospital, emergency power is a regulatory requirement, and a grid failure puts lives at risk. In data centers and telecom operations, critical load demands continuity and redundancy.
How much does the shutdown window cost your company
Think about what your company stops producing during the hours without power, what it loses in inventory, and what it spends to get operations back up and running. Our guide on how to calculate the cost of downtime helps consolidate these items into a value that management understands.
| Account item | What to observe during the window |
|---|---|
| Lost production | Volume that stops coming off the line during the shutdown |
| Inventory | Refrigerated products or inputs that expire |
| Team | Paid hours without production and overtime to recover |
| Recovery | Time for the line to return to normal operation |
With the cost calculated, simply compare the rental value and the loss of going through the window without power to decide.
How to plan the generator before the notice date
Generator contingency planning begins the day you confirm the date. Don’t leave it for the week of the shutdown.
Send our team the list of critical loads, the window schedule, and the operation address, as the right equipment depends on the loads, the connection point, and how long the network will be down. With this data, our engineering team calculates the power at no cost and recommends the appropriate generator for your facility.
Testing the plan before the date prevents discovering a problem with the network already down. In the guide on how to test the electrical contingency plan, you see how to check the generator start, automatic transfer, and grid return.
When the power returns, voltage fluctuation can knock out the automated line. Coordinate with your team, before the window begins, the order in which each piece of equipment will be reconnected.
Generator for scheduled shutdown in Greater Belo Horizonte and the interior of Minas Gerais
Our Contagem unit is located on Highway BR-381, 2850, km 423.3, in the Inconfidentes neighborhood, 14 km from Belo Horizonte. Within a 40 km radius, we serve industries, data centers, hospitals, and large retail in cities like Belo Horizonte, Contagem, Betim, Santa Luzia, and Nova Lima.
In the Central-West region of Minas Gerais, between 40 and 110 km from the unit, the profile changes. In cities like Divinópolis, Sete Lagoas, Nova Serrana, and Itaúna, the generator goes to mining, steel, and manufacturing industries.
In the Vale do Aço, a scheduled shutdown by Cemig in Ipatinga, Coronel Fabriciano, or Timóteo requires more care because the region’s steel industry operates continuously, and the furnace takes hours to return to normal operation. If your plant is in this region, treat the utility’s window as another scheduled shutdown, like those the region’s steel industry already schedules with a fixed date.
In cities like Betim and Sete Lagoas, the equipment remains operational for up to 24 hours after the request. In Turmalina, Peçanha, and other more remote areas, the delivery date is agreed upon in the proposal, and our on-call team monitors the generator throughout the window.
Get to know our generator for scheduled shutdown in Contagem and Greater Belo Horizonte and talk to our team.
Frequently Asked Questions
How do I know if my company is on Cemig’s shutdown schedule?
On Cemig’s website, you can check the schedule by municipality and neighborhood or by the consumer unit number. To receive notifications by SMS or email, just keep your registration updated on Cemig Atende Web.
How many days in advance should I plan the generator for a scheduled shutdown?
Start on the day you confirm the date in Cemig’s schedule. With the load list in hand, our engineering calculates the power at no cost, and the equipment remains operational for up to 24 hours after the request.
Can a rented generator keep the cold room and server running during the shutdown?
Yes, as long as the power is calculated for the critical load of your operation. Our engineering determines the generator size based on the list of equipment you need to keep running during the window. The calculation is done at no cost.
What happens to the automated line when the power returns after the shutdown?
Voltage fluctuation when the grid returns can knock out the automated line. Coordinate with your team the reconnection order and test the contingency plan before the shutdown date.
