Support

Most questions are answered below. If you don’t find what you’re looking for, we’re a short email away.

Do I need to install anything?

No. Sundial connects through APIs to your existing Tesla, SolarEdge, or Enphase setup. There’s no extra meter, no extra wall connector, and no electrician call. If your gear can talk to its native app, it can talk to Sundial.

How much will I actually save?

Most users save about $50 a month. Your number scales with how much you drive, your TOU rate, and how much daytime solar you currently export — a Tesla owner in PG&E or SCE territory exporting 60%+ of their daytime solar lands around there. We project your specific number on the dashboard once we have a few days of data.

Does this work without a Powerwall?

Yes. Powerwall makes the math richer — but you can use Sundial with just solar + EV. The app simply skips the battery-priority logic and routes everything to the car when there’s surplus.

What if I’m grandfathered into NEM 2.0?

Honest answer: the savings are smaller, because your export rate is closer to retail. You’ll still come out ahead — Sundial avoids round-trip losses and lets you control charging during peak windows — but the killer math is for NEM 3.0 customers.

Is Sundial free?

Yes — Sundial is free to use. Connect your Tesla, set your charging policy once, and start keeping more of your own solar. No credit card, and no charges of any kind.

Is my Tesla data safe?

We use Tesla’s official Fleet API with OAuth — same security model as the Tesla app. We never store your Tesla password (we never see it). You can revoke access anytime from your Tesla account.