node-red-contrib-power-saver
Version:
A module for Node-RED that you can use to turn on and off a switch based on power prices
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# Nord Pool and events: state node
## Description
In this example, data is read from the Nord Pool sensor in HA via the `events: state` node. The `ps-lowest-price` node is used to control a switch, controlled by `call service` nodes in Home Assistant, to turn on the cheapest 4 hours between 18:00 and 08:00. The schedule is printed to a debug node. The flow is triggered every time the Nord Pool sensor receives new prices.
## Flow
```json:no-line-numbers
[
{
"id": "3662aca5.dfe974",
"type": "server-state-changed",
"z": "d938c47f.3398f8",
"name": "Nord Pool sensor",
"server": "ec4a12a1.b2be9",
"version": 3,
"exposeToHomeAssistant": false,
"haConfig": [
{
"property": "name",
"value": ""
},
{
"property": "icon",
"value": ""
}
],
"entityidfilter": "sensor.nordpool_kwh_trheim_nok_3_095_025",
"entityidfiltertype": "exact",
"outputinitially": true,
"state_type": "str",
"haltifstate": "",
"halt_if_type": "str",
"halt_if_compare": "is",
"outputs": 1,
"output_only_on_state_change": true,
"for": 0,
"forType": "num",
"forUnits": "minutes",
"ignorePrevStateNull": false,
"ignorePrevStateUnknown": false,
"ignorePrevStateUnavailable": false,
"ignoreCurrentStateUnknown": false,
"ignoreCurrentStateUnavailable": false,
"outputProperties": [
{
"property": "payload",
"propertyType": "msg",
"value": "",
"valueType": "entityState"
},
{
"property": "data",
"propertyType": "msg",
"value": "",
"valueType": "eventData"
},
{
"property": "topic",
"propertyType": "msg",
"value": "",
"valueType": "triggerId"
}
],
"x": 120,
"y": 620,
"wires": [["e21a4b49adea2350"]]
},
{
"id": "ed7202ff.b5725",
"type": "debug",
"z": "d938c47f.3398f8",
"name": "Nord Pool result",
"active": false,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "true",
"targetType": "full",
"statusVal": "",
"statusType": "auto",
"x": 720,
"y": 680,
"wires": []
},
{
"id": "32f17ab2.927cf6",
"type": "api-call-service",
"z": "d938c47f.3398f8",
"name": "Turn on",
"server": "ec4a12a1.b2be9",
"version": 3,
"debugenabled": false,
"service_domain": "switch",
"service": "turn_on",
"entityId": "switch.varmtvannsbereder_switch",
"data": "",
"dataType": "jsonata",
"mergecontext": "",
"mustacheAltTags": false,
"outputProperties": [],
"queue": "none",
"x": 700,
"y": 580,
"wires": [[]]
},
{
"id": "2a3cd7db.0891f8",
"type": "api-call-service",
"z": "d938c47f.3398f8",
"name": "Turn off",
"server": "ec4a12a1.b2be9",
"version": 3,
"debugenabled": true,
"service_domain": "switch",
"service": "turn_off",
"entityId": "switch.varmtvannsbereder_switch",
"data": "",
"dataType": "json",
"mergecontext": "",
"mustacheAltTags": false,
"outputProperties": [],
"queue": "none",
"x": 700,
"y": 620,
"wires": [[]]
},
{
"id": "e21a4b49adea2350",
"type": "ps-receive-price",
"z": "d938c47f.3398f8",
"name": "Price Receiver",
"x": 310,
"y": 620,
"wires": [["391ac08890e0dd40"]]
},
{
"id": "391ac08890e0dd40",
"type": "ps-strategy-lowest-price",
"z": "d938c47f.3398f8",
"name": "Lowest Price",
"fromTime": "18",
"toTime": "08",
"hoursOn": "04",
"doNotSplit": false,
"sendCurrentValueWhenRescheduling": true,
"outputIfNoSchedule": "false",
"outputOutsidePeriod": "false",
"x": 490,
"y": 620,
"wires": [["32f17ab2.927cf6"], ["2a3cd7db.0891f8"], ["ed7202ff.b5725"]]
}
]
```