Charge preferences help WeaveGrid understand your daily needs so we can charge your car at the best times, while ensuring it's ready when you need it.
Daily charging needs:
- Target battery level - Available to those connected with a vehicle. Set in your EV's app (WeaveGrid automatically pulls this information to determine your charge limit)
- Time to be at battery level - The time you need your car fully charged to your target battery level (can be customized for each day of the week)
Optional add-ons: You can enable these features to further customize your charging:
- Avoid low battery levels
- Only lowest cost charging
- Rooftop solar charging
What is 'Avoid low battery levels'?
With Avoid low battery protection enabled, your car will begin to charge automatically if your battery level falls below 20%.
If Avoid low battery protection is activated during peak hours, your battery will charge only to 20% to ensure you have a minimum charge for unexpected transportation needs and emergencies. The remainder of your charging will be optimized for off-peak hours and your battery will charge to its target level.
If you have Only lowest cost charging enabled, WeaveGrid will wait until your off-peaks hours to charge your battery to 20%.
Enabling this also supports long-term battery health. Maintaining your charge between 20% - 80% can potentially extend your EV's battery lifespan. (You can adjust your target battery level from your vehicle's mobile app.)
Note: Avoiding low battery levels is only available to select vehicles. EVSEs, Toyota, and Lexus vehicles do not currently support this functionality.
What is 'Only lowest cost charging'?
Only lowest cost charging is an add-on that ensures your EV only charges during your utility rate's lowest-cost (off-peak) hours.*
If you are on a utility time of use rate and enable this feature, cost savings are prioritized over your target battery level. If your off-peak window is too short to reach your target, charging will stop when the on-peak period begins—even if your battery hasn't reached its goal (e.g., your car may stop at 70% instead of your 90% target). This means WeaveGrid can't guarantee your daily charging needs will be met.
Compatibility & Requirements:
- Rate Plans: This feature is only relevant for drivers on a Time-of-Use (TOU) utility rate plan.
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Device Support: This is available for all home charging stations and most vehicles participating in a program with automatic smart charging.
- It is currently not compatible with Toyota and Lexus models.
*It’s possible you can still see small amounts of charging during peak hours, even if your preferences are set to avoid them. This can be caused by your vehicle, not WeaveGrid. Some vehicles automatically “top off” the battery if it loses small amounts of charge while parked, and features like preconditioning (warming or cooling the car before a trip) can also trigger brief charging. To reduce this, you can disable battery-draining features (like Sentry Mode for Teslas), adjust preconditioning settings, or unplug your vehicle if it will be idle for long periods.
What is 'Rooftop solar charging'?
Rooftop solar charging allows you to prioritize charging your EV during the hours when your solar system produces the most energy, while still balancing electricity costs and making sure your vehicle is ready when you need it.
WeaveGrid uses these hours, along with your electricity rates and charging needs, to create a personalized charging plan. During your selected solar hours, the system will prioritize charging your vehicle. If your vehicle isn't fully charged within that window, charging will continue during other available times, such as off-peak hours, to ensure your vehicle is ready by your chosen time.
Important note: Rooftop solar charging is based on the hours you set, not real-time solar production. Enabling this feature means you could see charging on overcast days, which could result in grid energy being used.
Learn more about this add-on here: Does WeaveGrid account for my solar hours? What is the Rooftop solar charging add-on?
How do these optional add-ons interact with one another?
Check out: How do the optional add-on Charge Preferences interact with one another?