Home quickstart

Automate local electricity-price decisions with n8n

Build an n8n workflow from one authenticated price curve: cheapest windows, negative-price alerts, and battery notifications.

Short answer

A Home API key can fetch prices and forecasts for one selected zone. n8n can calculate a cheapest contiguous window in a Code node and send the result to your preferred notification or home-control system.

Forecast performance is published daily on the public accuracy board; losing zones remain visible.

Live DE-LU example: €117.43/MWh for 2026-08-29 22:00–23:00 GMT+0000; source smard.

Set it up

  1. 1 Create Home, select your zone, and store the API key in an n8n Header Auth credential.
  2. 2 Import one of the Voltcast workflow templates.
  3. 3 Set the workflow zone to the same Home zone.
  4. 4 Test manually and inspect the selected intervals before enabling the schedule.

Verify the data first

curl -H "Authorization: Bearer YOUR_API_KEY" "https://voltcast.com/api/v1/forecasts/YOUR_ZONE?horizon=48h"

Check zone, units, source, issuance time, native resolution, and gaps before connecting a physical device. An example live public context is at /zones/DE-LU.

Working resources

Download Cheapest EV window Download Negative-price alert Download Battery charge notification Verified Voltcast node on n8n →

Example task

Find the cheapest contiguous two-hour window from the returned 15-minute or hourly curve.