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Charging the Car Only When the Sun Is Up: Grok Bot Scales EV Charging to Solar Output and Watches the Sump Pump

  • Level Intermediate
  • Setup1–3 hrs (estimated)
  • Evidence Anecdotal
  • CostNot stated in source
  • No-codeNo
Grok BotSource-linked

What they did

No net metering where you live? This user has their Grok Bot adjust the car's charging rate when the solar panels are producing more, so they use the power instead of selling it back to the grid. They also get a weekly report from humidity sensors and the sump pump to catch air-quality or water problems early. On money, they get a daily email on their two-week budget: where they are, where they should be, unusual charges, a subscription audit and tips.

How it went

EV charging that follows your solar output and a weekly home health report.

Worth knowing

  • One Reddit comment with no numbers. It needs a charger and solar system with an API or a connector the bot can use. Test that a failure leaves the car charging normally.

Prompt

Cleaned version rewritten from the source — not a direct quote.

Connect to my [solar system] and [EV charger]. While the car is plugged in, raise the charging rate when solar output is above [X kW] and lower it when it drops, so I use as much of my own power as I can. Never let the battery fall below [Y%] by [time]. Every [Sunday], send me a short report on humidity and sump pump runs, and flag anything unusual.

Recommended

Try it in Grok Bot

  1. Copy the prompt (button below).
  2. Open Grok Bot chat and paste it. Replace any [bracketed] placeholders.
  3. Connect the listed tools (Email) as connectors when Grok Bot asks.
  4. If the task repeats, ask: "Make this a daily routine."

Alternatives: the same prompt works in Claude, ChatGPT Agent, OpenClaw.

Set it up

Tools: Email · Stack: Grok Bot + solar inverter app + EV charger + home sensors

  1. Read the original source for full context.
  2. Connect the tools your agent needs.
  3. Paste the prompt and replace [bracketed] placeholders.
  4. Run once manually and check the output before scheduling it.

Generic suggested steps, not from the source.

Evidence

First-hand Reddit comment in r/GrokBot: EV charge rate scaled to solar production (no net metering), weekly humidity and sump pump report, daily two-week budget email with subscription audit

Source: Reddit · 2026-10-21 · Verified by us: not yet · Report broken or outdated

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