Works with · Solar & battery

Charge your EV on excess solar with Enphase

SundialEV connects to Enphase through Enphase's official developer API and reads your production — plus grid and IQ Battery data when your system has a consumption CT and battery. It's a straightforward way to charge on surplus without Enphase's own EV charger.

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Live in the app — solar-only charging, in real time

Setup

Four steps, no new hardware

  1. Choose Enphase
    In Solar setup, choose Enphase and sign in to Enphase to approve access.
  2. Pick what your system meters
    SundialEV maps production, and grid and battery when your system reports them.
  3. Connect your car or charger
    A Tesla directly, or any EV through a Wallbox Pulsar Plus or Emporia charger.
  4. Plug in
    Charging follows your surplus from Enphase's readings.
What it reads

What Enphase gives SundialEV, and its limits

Provides

  • Solar production
  • Grid import/export (systems with a consumption CT)
  • IQ Battery power and charge level

Known limits

  • Enphase's API reports in 3 to 15 minute intervals, so charging follows the sun with some lag on some installations, but SundialEV will update as often as the inverter pushes updates to Enphase.
  • Microinverter-only systems with no consumption CT have no grid reading; SundialEV estimates surplus from production minus your baseline household use.
  • Want faster data? If your Envoy is readable on your own network, the push API can feed SundialEV directly.

What would charging on surplus save you?

Enter your zip and the calculator uses your utility's real rates.

FAQ

Frequently asked questions

Is this an alternative to Enphase's Green Mode?
It covers the same job — charging from surplus solar — for cars and chargers Enphase doesn't control: any Tesla directly, or any EV on a Wallbox Pulsar Plus or Emporia charger.
Do I need a consumption CT?
No, but it helps. With one, SundialEV sees your grid flow directly; without one, it estimates surplus from production minus your baseline use.
Why is there a delay?
Enphase's cloud API publishes production every 3 to 15 minutes, depending on how often your system reports to Enphase. The push API, fed from your Envoy on your local network, removes most of that lag.

Put your surplus in the car

Connect Enphase in a few minutes.

Get started on web Estimate your savings →