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⚡ Elpriset Just Nu — Home Assistant Integration

hacs_badge GitHub release HA min version Buy Me A Coffee

Real-time Swedish electricity prices (SE1–SE4) via Elpriset Just Nu. Supports the 15-minute price intervals introduced in Sweden in October 2025.

Elpriser tillhandahålls av Elpriset just nu.se

✨ Features

  • 8 sensors: today and tomorrow prices — current, highest, lowest, average, next
  • Selectable unit: öre/kWh or SEK/kWh — switch anytime via Configure
  • VAT support: include or exclude moms with a configurable rate (default 25%)
  • Last week comparison: fetches last week's same weekday for chart overlay
  • 15-minute intervals: full 96-slot daily coverage
  • Smart attributes: price trend, price level, tomorrow average, full price data
  • ApexCharts support: price_data and price_data_last_week for mixed charts
  • Swedish timezone aware: always uses Europe/Stockholm for date calculations
  • DST-safe: last week chart overlay preserves wall-clock time across DST transitions
  • Error recovery: keeps last known values if the API is temporarily unavailable
  • Device grouping: all sensors under one Device in Home Assistant
  • Diagnostics: download debug info from the HA UI for easy troubleshooting
  • UI configuration: no YAML required — all settings changeable via Configure
  • Zero external dependencies: uses only Python built-ins and Home Assistant libraries

📥 Installation via HACS

  1. Open HACS → click ⋮ → Custom repositories
  2. Paste https://github.com/TSA3000/ha-elprisetjustnu → Category: Integration → Add
  3. Find Elpriset Just Nu → click Download
  4. Restart Home Assistant

📥 Manual Installation

  1. Download this repository as a ZIP file
  2. Copy custom_components/elprisetjustnu/ into your HA custom_components/ directory
  3. Restart Home Assistant

⚙️ Configuration

  1. Settings → Devices & Services → Add Integration
  2. Search for Elpriset Just Nu
  3. Configure the following settings:
Setting Default Description
Price area SE3 Swedish electricity zone (SE1, SE2, SE3, SE4)
Unit öre/kWh öre/kWh or SEK/kWh
Include VAT (moms) ✅ On Apply VAT to all prices
VAT rate (%) 25 Only used when Include VAT is on
  1. Click Submit

To change any setting later, click Configure on the integration card — no need to remove and re-add.

Each price area can only be configured once.

To hide the unit label on dashboard cards, use the HA frontend entity customization rather than stripping it from the sensor.

📊 Sensors (example: SE3 device)

Today

Sensor Description
Current Price Live price in your selected unit
Highest Price Daily high
Lowest Price Daily low
Average Price Daily average
Next Price Price for the next 15-min slot

Tomorrow

Sensor Description
Highest Price Tomorrow Tomorrow's high — available after ~13:00 CET
Lowest Price Tomorrow Tomorrow's low — available after ~13:00 CET
Average Price Tomorrow Tomorrow's average — available after ~13:00 CET

Tomorrow sensors show unknown until the API publishes prices each afternoon. They update automatically on the next 15-minute poll after becoming available.

🔖 Attributes on Current Price sensor

Attribute Example value Description
price_trend rising vs next 15-min slot
price_level cheap relative to today's range
next_price 132.5 next slot price
price_data [[1711839600000, 95.2], ...] today + tomorrow as [timestamp_ms, price] pairs
price_data_last_week [[1711839600000, 88.1], ...] last week same weekday, shifted +7 days
data_points 96 number of today's slots
price_area SE3 configured area
unit öre/kWh selected unit
vat_percent 25 configured VAT rate
includes_vat true whether prices include VAT
tomorrow_available true whether tomorrow's prices are published
tomorrow_average 145.2 tomorrow's average price

Note: price_data and price_data_last_week use the compact [timestamp_ms, price] format — native to ApexCharts. This keeps attributes well under HA's 16KB recorder limit. All prices respect the VAT setting.

📈 Dashboard Charts

Requires ApexCharts Card from HACS.

Add charts to your dashboard via Edit → Add Card → Manual.

Simple price chart

Today and tomorrow prices as color-coded bars with a "Now" marker and tomorrow divider.

Electricity price chart SE3

type: custom:apexcharts-card
experimental:
  color_threshold: true
header:
  show: true
  title: Electricity Prices SE3
  show_states: true
  colorize_states: true
graph_span: 48h
span:
  start: day
now:
  show: true
  label: Now
  color: "#ffffff"
apex_config:
  chart:
    height: 280px
  legend:
    showForSingleSeries: false
  plotOptions:
    bar:
      borderRadius: 1
      columnWidth: "90%"
  xaxis:
    labels:
      datetimeFormatter:
        hour: HH:mm
    axisTicks:
      show: true
  yaxis:
    min: 0
    decimalsInFloat: 0
    forceNiceScale: true
  tooltip:
    x:
      format: "ddd HH:mm"
  annotations:
    xaxis:
      - x: new Date().setHours(0,0,0,0) + 86400000
        borderColor: "rgba(255,255,255,0.15)"
        strokeDashArray: 4
        label:
          text: Tomorrow
          orientation: horizontal
          borderWidth: 0
          style:
            background: "transparent"
            color: "rgba(255,255,255,0.5)"
            fontSize: 12px
            fontWeight: 400
            padding:
              left: 6
              right: 6
              top: 2
              bottom: 2
series:
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: " "
    unit: " öre/kWh"
    type: column
    float_precision: 1
    show:
      extremas: true
      in_header: before_now
      header_color_threshold: true
    data_generator: |
      return entity.attributes.price_data;
    color_threshold:
      - value: 0
        color: "#64b5f6"
      - value: 30
        color: "#4fc3f7"
      - value: 60
        color: "#4dd0e1"
      - value: 90
        color: "#4db6ac"
      - value: 120
        color: "#66bb6a"
      - value: 150
        color: "#9ccc65"
      - value: 180
        color: "#d4e157"
      - value: 210
        color: "#ffee58"
      - value: 240
        color: "#ffca28"
      - value: 270
        color: "#ffa726"
      - value: 300
        color: "#ff7043"
      - value: 350
        color: "#ef5350"
      - value: 400
        color: "#e53935"
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: Now
    unit: " öre/kWh"
    float_precision: 1
    show:
      in_chart: false
      in_header: true
      header_color_threshold: true
    color_threshold:
      - value: 0
        color: "#64b5f6"
      - value: 120
        color: "#66bb6a"
      - value: 200
        color: "#ffca28"
      - value: 300
        color: "#ff7043"
      - value: 400
        color: "#e53935"
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: Lowest
    unit: " öre/kWh"
    float_precision: 1
    show:
      in_chart: false
      in_header: true
    data_generator: |
      let prices = entity.attributes.price_data.map(x => x[1]);
      return [[new Date().getTime(), Math.min(...prices)]];
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: Highest
    unit: " öre/kWh"
    float_precision: 1
    show:
      in_chart: false
      in_header: true
    data_generator: |
      let prices = entity.attributes.price_data.map(x => x[1]);
      return [[new Date().getTime(), Math.max(...prices)]];

Mixed chart: Today vs Last Week

Today's prices as colored bars with last week's same weekday as a white line overlay on a second Y-axis. Instantly see how prices compare to the same day last week.

Electricity price chart SE3 vs last week

type: custom:apexcharts-card
experimental:
  color_threshold: true
header:
  show: true
  title: Electricity Prices SE3 — vs Last Week
  show_states: true
  colorize_states: true
graph_span: 48h
span:
  start: day
now:
  show: true
  label: Now
  color: "#ffffff"
apex_config:
  chart:
    height: 280px
  legend:
    show: true
  plotOptions:
    bar:
      borderRadius: 1
      columnWidth: "90%"
  xaxis:
    labels:
      datetimeFormatter:
        hour: HH:mm
  yaxis:
    - seriesName: " "
      min: 0
      decimalsInFloat: 0
      forceNiceScale: true
    - seriesName: Last week
      opposite: true
      min: 0
      decimalsInFloat: 0
      forceNiceScale: true
  tooltip:
    x:
      format: "ddd HH:mm"
  annotations:
    xaxis:
      - x: new Date().setHours(0,0,0,0) + 86400000
        borderColor: "rgba(255,255,255,0.15)"
        strokeDashArray: 4
        label:
          text: Tomorrow
          orientation: horizontal
          borderWidth: 0
          style:
            background: "transparent"
            color: "rgba(255,255,255,0.5)"
            fontSize: 12px
            fontWeight: 400
series:
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: " "
    unit: " öre/kWh"
    type: column
    float_precision: 1
    show:
      extremas: true
      in_header: before_now
      header_color_threshold: true
    data_generator: |
      return entity.attributes.price_data;
    color_threshold:
      - value: 0
        color: "#64b5f6"
      - value: 60
        color: "#4dd0e1"
      - value: 120
        color: "#66bb6a"
      - value: 180
        color: "#d4e157"
      - value: 240
        color: "#ffca28"
      - value: 300
        color: "#ff7043"
      - value: 400
        color: "#e53935"
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: Last week
    unit: " öre/kWh"
    type: line
    float_precision: 1
    color: "rgba(255,255,255,0.4)"
    stroke_width: 2
    yaxis_id: Last week
    show:
      in_header: false
      extremas: false
    data_generator: |
      return entity.attributes.price_data_last_week || [];
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: Lowest
    unit: " öre/kWh"
    float_precision: 1
    show:
      in_chart: false
      in_header: true
    data_generator: |
      let prices = entity.attributes.price_data.map(x => x[1]);
      return [[new Date().getTime(), Math.min(...prices)]];
  - entity: sensor.elpriset_just_nu_se3_current_price
    name: Highest
    unit: " öre/kWh"
    float_precision: 1
    show:
      in_chart: false
      in_header: true
    data_generator: |
      let prices = entity.attributes.price_data.map(x => x[1]);
      return [[new Date().getTime(), Math.max(...prices)]];

Replace sensor.elpriset_just_nu_se3_current_price with your actual entity ID. Find it under Settings → Entities → search elprisetjustnu.

💡 Automation examples

Notify when tomorrow's prices are published

automation:
  - alias: "Notify when tomorrow prices are available"
    trigger:
      - platform: template
        value_template: >
          {{ state_attr('sensor.elpriset_just_nu_se3_current_price',
             'tomorrow_available') == true }}
    action:
      - service: notify.mobile_app
        data:
          message: >
            Tomorrow's average price:
            {{ state_attr('sensor.elpriset_just_nu_se3_current_price',
               'tomorrow_average') }} öre/kWh

Turn off heater when price is expensive

automation:
  - alias: "Turn off heater on expensive prices"
    trigger:
      - platform: template
        value_template: >
          {{ state_attr('sensor.elpriset_just_nu_se3_current_price',
             'price_level') == 'expensive' }}
    action:
      - service: switch.turn_off
        target:
          entity_id: switch.heater

🔍 Diagnostics

If you need to report a bug, you can download diagnostics data directly from the HA UI:

Settings → Devices & Services → Elpriset Just Nu → ⋮ → Download Diagnostics

This provides a safe summary of your configuration and data state without exposing sensitive information.

🐛 Troubleshooting

Sensors may briefly show unavailable before ~13:00 CET — this is normal. Tomorrow's prices are published by the API around that time each day. The integration retries automatically on the next 15-minute cycle.

Check Settings → System → Logs for any errors prefixed with elprisetjustnu.

👨‍💻 Author

Sam Mahdi (@TSA3000)

About

⚡ Home Assistant custom integration for real-time Swedish electricity prices (SE1-SE4) via Elpriset Just Nu. Tracks current, highest, and lowest daily prices in öre/kWh with full 15-minute interval support.

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electricityenergyhacshacs-integrationhome-assistantsweden

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