Tesla has enabled ‘Time-Based Controls‘ on its Powerwall 2 in a recent update. The controls are built to allow load shifting so customers can maximize electricity savings.
According to the battery maker, the Powerwall has an array of electrical current sensors that monitor energy usage and solar energy production, as well as “intelligent forecasting software” to predict future usage and production.
The manufacturer suggested that through the use of this software, Powerwall “learns” and will optimize when it charges and discharges to maximize production. An email was sent to the company requesting further comments on the functionality of these “learning” techniques.
The hardware now has four operating modes, two of which that can take advantage of the Time-Based Control settings. Of the Time-Based Control uses, one lets you maximizes your electricity savings in exchange for running off of the battery more often.
Electrek.co has published images that a Powerwall 2 owner took of their Time Based Control system options. The first series of images show the option menu for choosing which mode to run your energy storage hardware.
The company allows you to set and save a certain amount of electricity specifically for your backup in the event of power outages.
Another set of menus allows users to program in time periods and their unique electricity rates. Both peak and shoulder prices, in addition to base rates, can be programmed.
Tesla is not the first company to develop this kind of time-dependent optionality. As the global market leader in residential energy storage, Sonnen has long offered this type of functionality to its customers.
In the majority of the United States, the total duration of outages on an annual basis is very low, and as such backup functionality doesn’t get used often. However, as California transitions all utility customers with behind-the-meter PV systems to time of use (TOU) rates – and states like Massachusetts dip their toes in these waters – we’ll have a need for this function. And if every single California home has solar power in the future, along with TOU rates, we might find ourselves in a situation where solar+energy storage makes more economic sense than solar power alone.
This content is protected by copyright and may not be reused. If you want to cooperate with us and would like to reuse some of our content, please contact: firstname.lastname@example.org.
We had our Powerwalls installed a week ago. The Time-of-Use feature is deactivated on our Tesla app. When we tried to get an answer from Tesla they told us this feature was not available “at this time” (even though we told them during the sales process that it was specifically for this purpose that we were getting them).
Any idea whether this is because we’re in New York State? How soon will this development result in the feature to be activated?
By submitting this form you agree to pv magazine using your data for the purposes of publishing your comment.
Your personal data will only be disclosed or otherwise transmitted to third parties for the purposes of spam filtering or if this is necessary for technical maintenance of the website. Any other transfer to third parties will not take place unless this is justified on the basis of applicable data protection regulations or if pv magazine is legally obliged to do so.
You may revoke this consent at any time with effect for the future, in which case your personal data will be deleted immediately. Otherwise, your data will be deleted if pv magazine has processed your request or the purpose of data storage is fulfilled.
Further information on data privacy can be found in our Data Protection Policy.