Time-Based Control (also referred to as load shifting) helps you maximize savings through smart charging and discharging of your Powerwall. If your electricity prices vary during the day, you are likely on a time-of-use plan, and Time-Based Control would present the best economic value for your system. Time-of-use plans are utility rate structures where electricity prices may vary depending on the time of day, the day itself or the season.
Utilities usually break time-of-use plans into three periods:
- Peak: High energy demand hours with most expensive prices
- Off-Peak: Low energy demand hours with least expensive prices
- Partial Peak or Shoulder: All other times
Learn more about energy data and impact cards in the Tesla app.
How to Set Up Time-Based Control
Before setting up Time-Based Control mode, obtain your specific time-of-use plan, which is typically found on your electric utility website.
Step 1: From the home screen, open the ‘Settings’ menu.
Step 2: Under ‘Set Control Mode,’ select ‘Time-Based Control.’
Step 3: Set your preferred rate plan by tapping ‘Edit Custom Rate Plan.’ You can set custom rate plans for the week by switching between ‘Weekdays’ and ‘Weekends’ at the top of the screen.
Step 4: Tap the ‘Off-Peak’ section and select your ‘Start’ and ‘End’ times. Then, tap the back icon, and repeat this step for the ‘Peak’ section.
Step 5: Set your preferred Backup Reserve by adjusting the slider at the top of the screen.
Note: Consider your personal economic needs and energy security outlook when setting Backup Reserve. Setting a higher reserve percentage saves more energy for protection during an outage, while setting a lower reserve percentage optimizes energy allocation for your Powerwall when Self-Powered mode is selected. Consider your personal economic needs and energy security outlook when setting Backup Reserve.
Powerwall continuously runs an energy forecast, learning the patterns of your energy use and seasonal solar production. This energy forecast allows your Powerwall to optimize your energy usage. If the forecast shows that you are likely to use energy at a high-cost time, Powerwall prioritizes charging during low-cost periods and discharging during high-cost periods.
Note: Since this smart forecasting needs time to learn about your energy usage, Time-Based Control requires approximately a week before becoming a selectable control mode.