EPEX Spot Day-Ahead electricity prices

EPEX Energy for AWTRIX NG

A Berry script app for AWTRIX NG LED matrix clocks (Ulanzi TC001 and compatible 32×8 panels) that displays live EPEX Spot Day-Ahead electricity prices from the free Energy Charts API — no API key required.

What it shows

• Top row: current electricity price in euro-cents per kWh (e.g. 19.1c), right-aligned, colored by price level. A lightning bolt icon sits on the left.
• Bottom row: a 24-pixel forecast timeline, one pixel per interval, starting at the current interval and extending into the future (including tomorrow's prices once published).

Features

• Selectable bidding zone — any valid Energy Charts zone: NL (default), DE-LU, BE, FR, DK1, DK2, AT, and many more. Note: Germany is DE-LU, not DE.

• Two timeline modes:

  • 15min — one pixel per quarter-hour; shows the next 6 hours.
  • hourly — quarter-hour prices averaged per clock hour; shows the current hour plus up to 24 hours ahead.

• Price gradient — smooth color interpolation with clamped endpoints:

  Price (€-ct/kWh)	Color
  ≤ −10	Purple
  0	Blue
  10	Green
  20	Yellow
  30	Orange
  ≥ 40	Red

• Timestamp-aligned data — aligns prices using Unix timestamps from the API, so late-evening views include tomorrow's prices after publication, and DST transitions work correctly.

• Configurable refresh interval — default 15 minutes (5–60).

• Error states — CFG (orange) for an invalid bidding zone, ERR (red) for network/API failures, TIME (orange) when the device clock is not yet set.

• Press the Select button to force an immediate refresh.

Setup

1. Copy the flow to your device.
2. The app appears in the rotation. Open the Apps tab, click the gear icon on the app's row, and configure:
   • Bidding zone (bzn): your Energy Charts zone code, e.g. NL or DE-LU.
   • Timeline (view): 15min (6 hours ahead) or hourly (24 hours ahead).
   • Refresh (every): polling interval in minutes (default 15).

Notes on data availability

• Tomorrow's day-ahead prices are typically published around 13:00–14:00. Before publication, the forecast bar shows only the remaining intervals of the current day; after publication, the bar fills to its full length on the next refresh.
• An invalid zone code (e.g. DE instead of DE-LU) shows CFG until corrected.

Data source

Price data: Energy Charts — license CC BY 4.0, sourced from Bundesnetzagentur / SMARD.de.