Managing electricity costs effectively requires more than just turning off the lights—it requires strategic consumption. If you want to optimize your monthly bills, understanding the TNB Time of Use ToU tariff is essential. This dynamic billing model is designed to reward users who shift their heavy electricity usage to off-peak hours. Whether you are managing household expenses or optimizing operational costs for your business, switching to this scheme could be the key to unlocking long-term energy savings.

Whether you are managing household expenses or optimizing operational costs for your business, switching to the ToU tariff could be the key to unlocking long-term energy savings.

Here is everything you need to know about how the TNB ToU scheme works, the potential savings, and how you can make the switch today.

Understanding the ToU Time Zones

Under the traditional general tariff, you pay a flat rate for your electricity regardless of the time of day. The ToU scheme replaces this with a variable rate based on grid demand, divided into two distinct time zones: Peak and Off-Peak.
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• Monday to Friday:

  • Peak Hours (Premium Rate): 2:00 PM – 10:00 PM

  • Off-Peak Hours (Discounted Rate): 10:00 PM – 2:00 PM

• Weekends & Public Holidays:

  • Off-Peak Hours: 24 Hours a day on all Saturdays, Sundays, and 15 recognized national public holidays.
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The Financial Advantage: Comparing TNB Time of Use ToU Rates

By shifting energy-intensive activities—such as EV charging, running heavy machinery, or operating high-capacity air conditioning—to off-peak hours, consumers can capitalize on a rate reduction of up to 5%.

Here is the direct comparison of electricity charges for domestic customers under the ToU framework:

Notice that while peak rates are marginally higher than the general tariff, the off-peak rates drop significantly. The 24-hour off-peak window during weekends offers a massive opportunity to front-load heavy energy usage at a fraction of the cost.

3 Reasons to Make the Switch

1. Immediate Cost Reduction: By optimizing when you use power, you actively reduce your bottom-line monthly bill.

2. Weekend Efficiency: For modern households and digital operations that run heavily over the weekend, a 24-hour off-peak window ensures you are constantly saving.

3. Data-Driven Decisions: Transitioning to ToU encourages a smarter, more monitored approach to utility management.

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How to Switch to ToU via the myTNB App

Transitioning your eligible account to the ToU tariff is fully digitized and takes only a few minutes to process.

Step-by-Step Guide:

1. Launch the myTNB App: Open the application on your smartphone and locate the “Time of Use” icon on the home dashboard.

2. Select Your Account: Choose the specific TNB account you wish to enroll. The app will automatically highlight accounts eligible for the upgrade.

3. Initialize the Setup: Tap the “Get Started” button to proceed with the application.

4. Verify Information: Review your registered contact details to ensure all communications and updates are sent to the correct email or phone number.

5. Submit: Confirm your selection. Your ToU application is now successfully submitted into the system.

Adapting to the TNB Time of Use ToU scheme is a highly effective step toward modern energy efficiency. Paired with proper monitoring through the app, it provides complete control over your utility expenditures, ensuring you never pay premium prices when you don’t have to. 

Information and tariff data within this article are referenced from the official Tenaga Nasional Berhad (TNB) announcements regarding the Time-of-Use (ToU) framework. For the latest updates, visit the official TNB website.

Ref: https://www.mytnb.com.my/announcements/entry/ToU-in-myTNB-app