Charge Your Tesla Automatically on Off-Peak Rates
Hit the charge level you need, by the time you need it, on the cheapest rates — from a plain-English request to your AI assistant.
Charging at the wrong time of day is one of the quietest ways to overpay for an EV. Most utilities charge far less overnight, and most Teslas sit plugged in for hours doing nothing. mytesla.io lets your AI assistant handle the timing for you — hit the charge level you need, by the time you need it, on the cheapest rates — from a plain-English request.
Why "just plug it in" isn't enough
Tesla has scheduled charging built in, and it works. But it's still a schedule you maintain:
- You have to know and enter your off-peak window.
- "Be ready by 7 AM Saturday" is a manual calculation every time your plans change.
- A fixed nightly charge doesn't adapt to "I'm driving to my parents' this weekend and need 100%."
- Preconditioning the battery for departure is a separate setting to remember.
An assistant can take the goal and work backward from it.
How mytesla.io does it
mytesla.io is an AI assistant for your Tesla — it exposes Tesla's charging commands as tools your AI can call. So you can ask for the result and let it plan:
- "Charge to 100% by 7 AM Saturday, off-peak rates only." The assistant sets a scheduled departure and charge limit so the car is full on time, drawing power in your cheap window.
- "Keep it at 80% on weekdays, but top to 90% the night before a road trip." Different targets, decided by context.
- "Only charge between midnight and 6 AM." Set a scheduled-charging window in one sentence.
- "Precondition the battery so it's ready to drive at 7:30, and charge during off-peak first." Charging and departure prep in a single request.
The commands behind it
Your assistant chooses from real Fleet API tools: start_charging,
stop_charging, set_charge_limit, set_scheduled_charging,
set_scheduled_departure, set_charging_amps, open_charge_port, and
close_charge_port — every one a signed request through Tesla's official Fleet
API, the same path the Tesla app uses.
How much can off-peak charging save?
It depends entirely on your utility, but time-of-use plans commonly make overnight power a fraction of peak-rate power. If your Tesla is your daily driver, shifting a full charge into the off-peak window night after night adds up over a year. mytesla.io doesn't change your rate — it makes sure you're consistently charging in the cheap window without having to think about it.
mytesla.io can schedule charging and departure. It can't see your utility's live pricing unless your assistant has a data source for that — for straightforward off-peak windows, tell it your hours and it'll stay inside them.
What you need
- A Tesla that supports the Fleet API (roughly 2018+ Model S/3/X/Y).
- A home charging setup (this is about when you charge, not where).
- A mytesla.io subscription — from $4.99/month.
- An AI assistant with connector/MCP support (Claude, ChatGPT, Cursor, …).
FAQ
Can it make sure the car is charged by a specific time? Yes — that's what scheduled departure is for. Ask for "100% by 7 AM" and the assistant sets the target and timing.
Does mytesla.io know my electricity rates? Not on its own. Tell it your off-peak window (e.g. "midnight to 6 AM") and it will keep charging inside it. If your assistant has a pricing data source, it can use that too.
Can it precondition the battery for departure, not just the cabin? Yes — scheduled departure can prep the battery. For cabin comfort timing, see precondition your Tesla from your calendar.
Is off-peak charging better for the battery? The main benefit is cost. Charging habits like a sensible daily limit (often ~80%) matter more for longevity — and you can ask the assistant to hold that limit automatically.