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Dashboards: add Nordpool energy chart card, README and example image
- Add card_nordpool_energy_chart.yaml: configurable Lovelace chart (custom:config-template-card + custom:apexcharts-card) - Displays today/tomorrow Nordpool prices, grid import and battery SOC - Dynamic price calculations, color thresholds, formatted axes and grouping - Add README with installation, configuration and disable instructions - Add example screenshot HA_energy_chart.jpg
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‎Dashboards/nordpool_energy_chart/HA_energy_chart.jpg‎

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‎Dashboards/nordpool_energy_chart/card_nordpool_energy_chart.yaml‎

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# This code should be copy-pasted into a lovelace card.
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# Requires the custom:config-template-card, custom:apexcharts-card, custom:nordpool-card and custom:congif-template-card to be installed.
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type: custom:config-template-card
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variables:
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nordpool_sensor: '''sensor.nordpool'''
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grid_import_sensor: '''sensor.sigen_daily_grid_energy_import'''
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battery_soc_sensor: '''sensor.sigen_energy_storage_system_soc'''
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additional_cost_template: ''' *1 '''
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decimals_in_prices: 0
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decimals_in_energy: 1
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chart_price_cutoff_coerficient: 0.1
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price_y_axis_unit: '''öre'''
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energy_y_axis_unit: '''kWh'''
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price_overview_unit: '''öre/kWh'''
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chart_title: '''Electricity prices today'''
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total_purchease_price_text: '''Total purchease price'''
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grid_import_text: '''Grid Import today'''
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battery_soc_text: '''Battery charge'''
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lowest_price_text: '''Lowest future price'''
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highest_price_text: '''Highest future price'''
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price_now_text: '''Current price'''
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now_text: ''''''
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get_chart_cutoff: |
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(_min_price, _max_price, _coefficient) => {
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if (_min_price <= 0) {
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return "auto";
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}
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return _min_price - ((_max_price-_min_price) * _coefficient)
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}
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get_total_max_nordpool_price: |
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(_nordpool_sensor, _additional_cost_template) => {
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return states[_nordpool_sensor].attributes.raw_today.concat(states[_nordpool_sensor].attributes.raw_tomorrow).map(data=> eval("data.value"+_additional_cost_template)).reduce((a, b) => Math.max(a, b), -Infinity)
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}
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get_total_min_nordpool_price: |
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(_nordpool_sensor, _additional_cost_template) => {
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return states[_nordpool_sensor].attributes.raw_today.concat(states[_nordpool_sensor].attributes.raw_tomorrow).map(data=> eval("data.value"+_additional_cost_template)).reduce((a, b) => Math.min(a, b), Infinity)
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}
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get_low_bottom_threshold_nordpool_price: |
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(_min, _max) => {
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return parseFloat(_min) + parseFloat(((_max) - parseFloat(_max)) /10)
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}
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get_low_threshold_nordpool_price: |
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(_min, _max) => {
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return parseFloat(_min) + parseFloat(((_max) - parseFloat(_min)) /3)
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}
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get_high_threshold_nordpool_price: |
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(_min, _max) => {
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return parseFloat(_min)
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+ (( parseFloat(_max) - parseFloat(_min) ) /3) * 2
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}
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get_high_top_threshold_nordpool_price: |
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(_min, _max) => {
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return parseFloat(_min) + parseFloat(((_max) - parseFloat(_min)) /10)*9
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}
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get_total_prices: |
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_cost_template => {
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return "return (entity.attributes.raw_today.map((start, index) => {return [new Date(start['start']).getTime(), entity.attributes.raw_today[index]['value']"
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+ _cost_template
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+ "];})).concat(entity.attributes.raw_tomorrow.map((start, index) => {return [new Date(start['start']).getTime(),entity.attributes.raw_tomorrow[index]['value'] "
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+ _cost_template + "];}));"
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}
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get_future_total_prices: |
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_cost_template => {
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return "const now = new Date().getTime() - 3600000;"
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+ "const futureData = entity.attributes.raw_today.concat(entity.attributes.raw_tomorrow).filter(data"
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+ " => new Date(data.start).getTime() >= now);"
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+ "return futureData.map((data, index) => {"
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+ "return [new Date(data.start).getTime(), futureData[index].value"
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+ _cost_template + "];});"
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}
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entities:
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- ${nordpool_sensor}
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- ${battery_soc_sensor}
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- ${grid_import_sensor}
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card:
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type: custom:apexcharts-card
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graph_span: >-
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${ states[nordpool_sensor].attributes.raw_today.length +
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states[nordpool_sensor].attributes.raw_tomorrow.length + 'h' }
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yaxis:
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- id: y-price
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min: >-
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${get_chart_cutoff(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),get_total_max_nordpool_price(nordpool_sensor,additional_cost_template),chart_price_cutoff_coerficient)}
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max: auto
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apex_config:
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opposite: false
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forceNiceScale: true
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decimalsInFloat: ${decimals_in_prices}
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labels:
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formatter: >
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${"EVAL:function(value) {return value.toFixed(" + decimals_in_prices
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+ ") + ' " + price_y_axis_unit + "' }"
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- id: y-energy
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min: 0
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max: auto
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apex_config:
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opposite: true
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forceNiceScale: true
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decimalsInFloat: ${decimals_in_energy}
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labels:
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formatter: |
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${"EVAL:function(value) {return value.toFixed("
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+ decimals_in_energy
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+ ") + ' " + energy_y_axis_unit + "' }"
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- id: y-SOC
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show: false
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min: 0
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max: 100
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apex_config:
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chart:
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height: 340px
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legend:
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show: false
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title:
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floating: false
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align: center
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style:
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fontSize: 20px
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fontWeight: bold
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xaxis:
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labels:
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datetimeFormatter:
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hour: HH:mm
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show:
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last_updated: true
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experimental:
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color_threshold: true
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header:
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title: ${chart_title}
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show: true
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show_states: true
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colorize_states: true
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span:
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start: day
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now:
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show: true
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label: ${now_text}
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series:
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- entity: ${nordpool_sensor}
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yaxis_id: y-price
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name: ${total_purchease_price_text}
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offset: '-30min'
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float_precision: ${decimals_in_prices}
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show:
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extremas: false
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in_header: false
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type: column
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data_generator: ${get_total_prices(additional_cost_template)}
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color_threshold:
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- value: -1000
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color: '#00f738'
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- value: >-
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${get_low_bottom_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,additional_cost_template)
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)}
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color: '#12A141'
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- value: >-
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${get_low_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,additional_cost_template))}
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color: '#F3DC0C'
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- value: >-
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${get_high_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,
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additional_cost_template))}
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color: '#E76821'
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- value: >-
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${get_high_top_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,additional_cost_template))}
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color: '#DC182F'
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- entity: ${grid_import_sensor}
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yaxis_id: y-energy
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name: Grid import Chart
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color: '#FF4646'
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curve: stepline
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float_precision: ${decimals_in_energy}
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show:
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extremas: false
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in_header: false
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type: line
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stroke_width: 3
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opacity: 0.75
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extend_to: false
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unit: ${energy_y_axis_unit}
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group_by:
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func: delta
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duration: 1h
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- entity: ${grid_import_sensor}
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name: ${grid_import_text}
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color: '#FF4646'
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float_precision: ${decimals_in_energy}
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show:
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in_chart: false
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in_header: raw
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unit: ${energy_y_axis_unit}
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- entity: ${battery_soc_sensor}
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yaxis_id: y-SOC
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name: ${battery_soc_text}
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color: '#7a50d9'
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float_precision: 0
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show:
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extremas: false
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in_header: raw
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header_color_threshold: true
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type: line
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stroke_width: 3
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opacity: 0.75
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extend_to: false
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group_by:
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func: avg
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duration: 1h
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- entity: ${nordpool_sensor}
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color: '#7bff00'
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float_precision: ${decimals_in_prices}
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name: ${lowest_price_text}
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unit: ${price_overview_unit}
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show:
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in_chart: false
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legend_value: false
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group_by:
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func: min
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duration: 2d
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data_generator: ${get_future_total_prices(additional_cost_template)}
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- entity: ${nordpool_sensor}
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name: ${price_now_text}
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type: column
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unit: ${price_overview_unit}
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show:
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in_header: before_now
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in_chart: false
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header_color_threshold: true
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float_precision: ${decimals_in_prices}
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data_generator: ${get_future_total_prices(additional_cost_template)}
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color_threshold:
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- value: -1000
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color: '#00f738'
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- value: >-
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${get_low_bottom_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,additional_cost_template)
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)}
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color: '#12A141'
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- value: >-
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${get_low_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,additional_cost_template))}
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color: '#F3DC0C'
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- value: >-
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${get_high_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,
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additional_cost_template))}
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color: '#E76821'
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- value: >-
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${get_high_top_threshold_nordpool_price(get_total_min_nordpool_price(nordpool_sensor,additional_cost_template),
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get_total_max_nordpool_price(nordpool_sensor,additional_cost_template))}
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color: '#DC182F'
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- entity: ${nordpool_sensor}
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color: '#DC182F'
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float_precision: ${decimals_in_prices}
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name: ${highest_price_text}
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unit: ${price_overview_unit}
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show:
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in_chart: false
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legend_value: false
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group_by:
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func: max
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duration: 2d
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data_generator: ${get_future_total_prices(additional_cost_template)}
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layout_options:
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grid_columns: full

‎Dashboards/nordpool_energy_chart/readme.md‎

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# Energy price chart using nordpool prices.
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This is my atempt at a chart displaying todays prices and tomorows prices when available along with imported energy.
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- Upper and Lower price threshold is calculated for today+tomorows ***comming*** price.
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- Orange is upper 3:rd of the pricing interval.
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- Green is lower 3:rd of the prices interval.
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- Red is the upper 10% of the pricing interval.
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![alt text](HA_energy_chart.jpg)
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# Pre-requirements
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This has not been tested on HA earlier than 2024.9 and requires the following HACS addons:
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- Nordpool - For getting energy prices.
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- Apex-Charts card
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- Config Template Card Card - For scripting inside the chart card.
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- lovelace-card-mod - For styling.
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The Nordpool entity should be changed from the default name to just "nordpool" as per the components installation instructions.
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# Installation
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- Copy - paste the raw card code from `card_nordpool_energy_chart.yaml` to your a new card on you lovelace dashboard. Add any card and replace the raw code that you can edit by clicking on the *SHOW CODE EDITOR* in the bottom left.
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# Configuration
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Configure your Nordpool integration.
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In the chart-card you should change the following variables to suit your needs:
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- Check so the `nordpool_sensor:` name is correct.
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- The Grid import sensor name: `grid_import_sensor:` should be changed if not using Sigenergy system.
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- The
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- Change `currency` if needed.
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- `chart_price_cutoff_coerficient` from 0 to 1 to show more or less barheight under the minimum value.
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- `decimals_in_prices` and `decimals_in_energy` to indicate how many decimals to show.
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- `additional_cost_template` is used for adding extra costs if not added by nordpol sensor. It should be empty or start with a arithmetic operator.
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- Example:
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- additional_cost_template: '''*1.25 +(27.2 + 42.8 + 3.04 + 2.19 + 1.4) *1.25'''
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- Ads 25% taxes and then other costs as specified by the grid operator with more taxes.
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- Change the Now text to any label you want to apear `now_text: '''Now'''` besides the line showing current time in the chart.
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- And any of the texts below to suit your language or prefferences.
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# Disable the Grid or Battery chart
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## Disable the Grid chart
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1. Comment out the update entity:
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```
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entities:
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- ${nordpool_sensor}
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- ${battery_soc_sensor}
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# - ${grid_import_sensor}
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```
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2. Delete the rows starting with ```- entity: ${grid_import_sensor}``` and all rows under it until the next ```- entity:```. There are currently two such sections.
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## Disable the Battery SOC
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1. Comment out the update entity:
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```
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entities:
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- ${nordpool_sensor}
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# - ${battery_soc_sensor}
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- ${grid_import_sensor}
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```
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2. Delete the row starting with ```- entity: ${battery_soc_sensor}``` and all rows under it until the next ```- entity:```. There is currently only one such section.
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# Performance concerns
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Most of the calculations are done serverside so it's important to have a good computer.
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If the chart flickers and takes long time to load, deactivate updating the chart with each change of battery charge and grid consumption:
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```
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entities:
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- ${nordpool_sensor}
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# - ${battery_soc_sensor}
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# - ${grid_import_sensor}
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```
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--
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Happy savings!

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