Download a solar system forecast from Solcast

README.md

Solcast allows you to setup the details of your solar system, size, orientation, location etc. It then provides an API so you can download this forecast on a regular basis.

This flow downloads that 3 day forecast on an hourly basis, provides a simple dashboard as well as sets up a bunch of global values for use within your flows.

This code downloads a solar forecast for use with home automation within node-red.

Firstly you need to setup an account with solcast. https://solcast.com/

Setup your site with details on your solar panels, size, orientation etc. This will then provide you with a site ID an authentication details.

You will need to edit the http node (SolarForecast) in node-red. Change the URL to include your resource-id and also change the bearer token.

Resource ID is the API URL from the solcast site page Bearer tolken is the API key which comes from your account page in solcast.

By default it’s scheduled to run every hour.

Download Solcast dashboard as well to give you a working dashboard

flow.json

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        "id": "c6e1753f802e5da8",
        "type": "tab",
        "label": "Solcast",
        "disabled": false,
        "info": ""
    },
    {
        "id": "29c5c88c5e35da06",
        "type": "http request",
        "z": "c6e1753f802e5da8",
        "name": "SolarForecast",
        "method": "GET",
        "ret": "obj",
        "paytoqs": "ignore",
        "url": "https://api.solcast.com.au/rooftop_sites/<resource-id>/forecasts?format=json&hours=72",
        "tls": "",
        "persist": false,
        "proxy": "",
        "authType": "bearer",
        "senderr": false,
        "x": 480,
        "y": 180,
        "wires": [
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    {
        "id": "f65a76176e9dd131",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "Solarforecast",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 690,
        "y": 200,
        "wires": []
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    {
        "id": "d88272138bc4c31c",
        "type": "inject",
        "z": "c6e1753f802e5da8",
        "name": "Get PV Forecast",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "3600",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payloadType": "date",
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    {
        "id": "193ee9b5f86b2563",
        "type": "inject",
        "z": "c6e1753f802e5da8",
        "name": "Read cache PV Forecast",
        "props": [
            {
                "p": "payload"
            },
            {
                "p": "topic",
                "vt": "str"
            }
        ],
        "repeat": "300",
        "crontab": "",
        "once": false,
        "onceDelay": "30",
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        "type": "function",
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        "name": "Extract All",
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        "finalize": "",
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        "name": "GetPVArray",
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    {
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        "name": "PVForecast to global",
        "rules": [
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                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
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    {
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        "name": "PVForecastObject to global",
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                "pt": "global",
                "to": "payload",
                "tot": "msg"
            }
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        "x": 1000,
        "y": 120,
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    {
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        "name": "",
        "filename": "solarforecast.txt",
        "appendNewline": true,
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        "overwriteFile": "true",
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    },
    {
        "id": "c6cfb79dbbe4dbb1",
        "type": "debug",
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        "name": "readfile",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
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        "statusVal": "",
        "statusType": "auto",
        "x": 940,
        "y": 340,
        "wires": []
    },
    {
        "id": "46e434c99ee79771",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "GetSolcastSuccess",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1310,
        "y": 80,
        "wires": []
    },
    {
        "id": "f247f2acd3080a6d",
        "type": "comment",
        "z": "c6e1753f802e5da8",
        "name": "Get Forecast from Solcast",
        "info": "",
        "x": 230,
        "y": 140,
        "wires": []
    },
    {
        "id": "ce45c7ed7dbbbd48",
        "type": "comment",
        "z": "c6e1753f802e5da8",
        "name": "Check for update every 5 minutes",
        "info": "",
        "x": 250,
        "y": 360,
        "wires": []
    },
    {
        "id": "f3c4d443bdcf9c9b",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Write forecasts array to global",
        "rules": [
            {
                "t": "set",
                "p": "individualforecast",
                "pt": "global",
                "to": "payload.forecasts",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1330,
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    },
    {
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        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract 12 hours",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 0; i < 24; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1020,
        "y": 526,
        "wires": [
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    {
        "id": "0ee688a2564d6376",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "12 hour PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "pvforecast12",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1340,
        "y": 566,
        "wires": [
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        ]
    },
    {
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        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "12h PV",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
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        "wires": []
    },
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        "type": "function",
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        "name": "Extract 24 hours",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 0; i < 48; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1020,
        "y": 614,
        "wires": [
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        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "24 hour PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "pvforecast24",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
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        "name": "24h PV",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
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        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
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        "wires": []
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    {
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        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract pessimistic 12 hours",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 0; i < 24; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate10;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1040,
        "y": 860,
        "wires": [
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    {
        "id": "e86270033a0eaa22",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "12 hour P10 forecast to global",
        "rules": [
            {
                "t": "set",
                "p": "pvforecast12P10",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1410,
        "y": 902,
        "wires": [
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    },
    {
        "id": "54e053f062c19b9e",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "12h PV P10",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 1350,
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        "wires": []
    },
    {
        "id": "29753a32b6532691",
        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract pessimistic 24 hours",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 0; i < 48; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate10;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1060,
        "y": 946,
        "wires": [
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                "ceaaaab9aaea4c95",
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    {
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        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "24 hour P10 forecast to global",
        "rules": [
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                "t": "set",
                "p": "pvforecast24P10",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1410,
        "y": 989,
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    {
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        "type": "debug",
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        "name": "24h PV P10",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 1350,
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        "wires": []
    },
    {
        "id": "97dca6b84dfa01ce",
        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract Day 48",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 49; i < 96; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1020,
        "y": 694,
        "wires": [
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    },
    {
        "id": "69ce95ae3fc488b3",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "48 hour PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "PVForecast48",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1320,
        "y": 734,
        "wires": [
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    },
    {
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        "type": "debug",
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        "name": "24h PV",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
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        "wires": []
    },
    {
        "id": "af0f4a169f3b2d90",
        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract Day 72",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 97; i < 143; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1020,
        "y": 774,
        "wires": [
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    },
    {
        "id": "e6eba56cf54fe404",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Day 72 PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "PVForecast72",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1340,
        "y": 814,
        "wires": [
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    {
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        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "24h PV",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
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        "targetType": "msg",
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        "statusType": "auto",
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        "wires": []
    },
    {
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        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract P10 Day 2",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 49; i < 96; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate10;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1070,
        "y": 1035,
        "wires": [
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    },
    {
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        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Day 2 PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "PVForecastD2P10",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1360,
        "y": 1075,
        "wires": [
            []
        ]
    },
    {
        "id": "3f8b74ccafba9125",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "24h PV",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 1340,
        "y": 1035,
        "wires": []
    },
    {
        "id": "58e18f365ec16b92",
        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract P10 Day 3",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar forecasts = []\nfor (var i = 97; i < 143; i++) {\n    forecasts[i] = msg.payload.forecasts[i].pv_estimate10;\n    }\n        pvtotal = forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nset = msg.payload.forecasts = forecasts\nmsg.payload.pvtotal = pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1070,
        "y": 1115,
        "wires": [
            [
                "e7b6074d13f19ea6",
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            ]
        ]
    },
    {
        "id": "e7b6074d13f19ea6",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Day 3 PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "PVForecastD3P10",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1380,
        "y": 1155,
        "wires": [
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        ]
    },
    {
        "id": "793dee2a3998928f",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "24h PV",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 1360,
        "y": 1115,
        "wires": []
    },
    {
        "id": "c81382fa001876e9",
        "type": "switch",
        "z": "c6e1753f802e5da8",
        "name": "Check Forecast Status",
        "property": "statusCode",
        "propertyType": "msg",
        "rules": [
            {
                "t": "eq",
                "v": "200",
                "vt": "num"
            },
            {
                "t": "neq",
                "v": "200",
                "vt": "str"
            }
        ],
        "checkall": "true",
        "repair": false,
        "outputs": 2,
        "x": 730,
        "y": 120,
        "wires": [
            [
                "aceb03b0541d8887",
                "a7bcc02538495e28"
            ],
            [
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        ]
    },
    {
        "id": "2197686ef7a50128",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "GetSolcastFailed",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1230,
        "y": 160,
        "wires": []
    },
    {
        "id": "bd3b26d855ed2473",
        "type": "inject",
        "z": "c6e1753f802e5da8",
        "name": "Read cache PV Forecast",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "10",
        "crontab": "",
        "once": false,
        "onceDelay": "30",
        "topic": "",
        "payload": "individualforecast",
        "payloadType": "global",
        "x": 250,
        "y": 1240,
        "wires": [
            [
                "f9e6352b98d1eaaa"
            ]
        ]
    },
    {
        "id": "1f28eb7b9c53b545",
        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "Daily Rollup",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1060,
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        "wires": []
    },
    {
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        "type": "function",
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        "name": "Extract Daily Total",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar x = -1\nvar zeroday = 0\nvar forecasts = []\nvar dailypv = []\nfor (var i in msg.payload) {\n if (msg.payload[i]==0) {\n   zeroday = 0;\n } else if (zeroday==1) {\n    dailypv[x] = dailypv[x] + msg.payload[i]/2;\n }else{\n    zeroday = 1\n    x = x + 1\n    dailypv[x] = 0\n    dailypv[x] = dailypv[x] + msg.payload[i]/2;\n}}\nmsg.payload = dailypv;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 500,
        "y": 1240,
        "wires": [
            [
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        ]
    },
    {
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        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Set Daily Total to Global",
        "rules": [
            {
                "t": "set",
                "p": "DailyTotal",
                "pt": "global",
                "to": "payload",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 800,
        "y": 1240,
        "wires": [
            [
                "1f28eb7b9c53b545"
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        ]
    },
    {
        "id": "82f8f3adac2bdeb4",
        "type": "inject",
        "z": "c6e1753f802e5da8",
        "name": "Read cache PV Forecast",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "10",
        "crontab": "",
        "once": false,
        "onceDelay": "30",
        "topic": "",
        "payload": "individualforecastP10",
        "payloadType": "global",
        "x": 250,
        "y": 1280,
        "wires": [
            [
                "fcda0bcd9e547ec1"
            ]
        ]
    },
    {
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        "type": "debug",
        "z": "c6e1753f802e5da8",
        "name": "Daily Rollup",
        "active": false,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "true",
        "targetType": "full",
        "statusVal": "",
        "statusType": "auto",
        "x": 1060,
        "y": 1280,
        "wires": []
    },
    {
        "id": "fcda0bcd9e547ec1",
        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract DailyP10 Total",
        "func": "// add up all the values:\nvar pvtotal = 0\nvar x = -1\nvar zeroday = 0\nvar forecasts = []\nvar dailypv = []\nfor (var i in msg.payload) {\n if (msg.payload[i]==0) {\n   zeroday = 0;\n } else if (zeroday==1) {\n    dailypv[x] = dailypv[x] + msg.payload[i]/2;\n }else{\n    zeroday = 1\n    x = x + 1\n    dailypv[x] = 0\n    dailypv[x] = dailypv[x] + msg.payload[i]/2;\n}}\nmsg.payload = dailypv;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 510,
        "y": 1280,
        "wires": [
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                "2b06f27f02c9e7f7"
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        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Set Daily Total to Global",
        "rules": [
            {
                "t": "set",
                "p": "DailyTotalP10",
                "pt": "global",
                "to": "payload",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 800,
        "y": 1280,
        "wires": [
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    },
    {
        "id": "bd7319d721ca078a",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "PVForecast to global",
        "rules": [
            {
                "t": "set",
                "p": "pvforecastP10",
                "pt": "global",
                "to": "payload.pvtotal",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1300,
        "y": 480,
        "wires": [
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        ]
    },
    {
        "id": "c5c6050f03989745",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Write forecasts array to global",
        "rules": [
            {
                "t": "set",
                "p": "individualforecastP10",
                "pt": "global",
                "to": "payload.forecasts",
                "tot": "msg"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1330,
        "y": 440,
        "wires": [
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        ]
    },
    {
        "id": "031c5b77e02c21be",
        "type": "function",
        "z": "c6e1753f802e5da8",
        "name": "Extract All P10",
        "func": "// add up all the values:\nfor (var i in msg.payload.forecasts) {\n    msg.payload.forecasts[i] = Number(msg.payload.forecasts[i].pv_estimate10);\n    }\n        msg.payload.pvtotal = msg.payload.forecasts.reduce(function(a, b){\n        return a + b;\n    }, 0);\n// halve the value due to a reading every 30 minutes:\nmsg.payload.pvtotal = msg.payload.pvtotal/2;\nreturn msg;",
        "outputs": 1,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "x": 1020,
        "y": 480,
        "wires": [
            [
                "bd7319d721ca078a",
                "c5c6050f03989745"
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    },
    {
        "id": "dd13c7fc9b94e5fe",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Forecast Status",
        "rules": [
            {
                "t": "set",
                "p": "SolCastStatus",
                "pt": "global",
                "to": "Successful",
                "tot": "str"
            },
            {
                "t": "set",
                "p": "SolCastLastFetch",
                "pt": "global",
                "to": "",
                "tot": "date"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 1260,
        "y": 120,
        "wires": [
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        ]
    },
    {
        "id": "5e46f558db6621c7",
        "type": "change",
        "z": "c6e1753f802e5da8",
        "name": "Forecast Status",
        "rules": [
            {
                "t": "set",
                "p": "SolCastStatus",
                "pt": "global",
                "to": "payload.response_status.error_code",
                "tot": "msg"
            },
            {
                "t": "set",
                "p": "SolCastLastFetch",
                "pt": "global",
                "to": "",
                "tot": "date"
            }
        ],
        "action": "",
        "property": "",
        "from": "",
        "to": "",
        "reg": false,
        "x": 980,
        "y": 160,
        "wires": [
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    }
]

Hello,

really appreciate your flow to get some experience about expected solar power.
I use this now already for longer but upgraded to nodered 3.0 last weekend.

Now the IDE complains about this line:

set = msg.payload.forecasts = forecasts

and to be honest I have not understood this statement never, could you please explain what it does?
I do not find a set function for javascript in google neither, maybe my bad, thanks!

I think that is just going to be my lack of knowledge :-) I'll do some testing, but I think all of those references can simply be changed remove the set ie msg.payload.forecasts = forecasts;

Hi, I alwas get following message:
failed to write to file: Error: EACCES: permission denied, open 'solarforecast.txt'
how can I handle it....

Hi, I alwas get following message: failed to write to file: Error: EACCES: permission denied, open 'solarforecast.txt' how can I handle it....

It's used for caching the results from solcast. The error you are getting is because it can't write to the directory. You can either map it to a place you can write to or you can remove it entirely and connected the node "PVForecastObject to global" directly to the Javascript Extract nodes.

I got a statuscode 401 but after I pasted the api-key in the username field of Basic authentication it worked (statuscode 200)

Hi, I get this error every minute and I do not know to fix it, can you help:

"TypeError: Cannot read properties of undefined (reading 'toFixed')"

And these two every five minutes:
"TypeError: Cannot read properties of undefined (reading 'pv_estimate')"
"TypeError: Cannot read properties of undefined (reading 'pv_estimate10')"

I got a statuscode 401 but after I pasted the api-key in the username field of Basic authentication it worked (statuscode 200)

I was going to say it sounds like you haven't authenticated :-) The other error is because the solcast array is empty, now you are fetching data it should go away.

Hi Dtswk, thanks for responding so quickly (much appreciated) and thanks for your work, very nice! Note that the table and graph is indeed filled after a while but the following debug errors keep coming:

12-10-2023 12:04:53node: Extract Day 72
function : (error)
"TypeError: Cannot read properties of undefined (reading 'pv_estimate')"
12-10-2023 12:04:53node: Extract P10 Day 3
function : (error)
"TypeError: Cannot read properties of undefined (reading 'pv_estimate10')"

Any idea?

Note that it wasn't clear to me that the api-key, which you call bearer token, needs to be entered in the username field of Basic authentication. I tried it because I read it somewhere on Stackoverflow, I think.

Hi Aziona.
Just installed it, and got the same error. When enablinging the debug section for GetPVArray, I can see that it's only get data up until 96.
For both these fucntions, the for loop starts with " for (var i = 97; i < 143; i++) "
Since the value ends at var i = 96, they fail.
I'm not sure if its because they have started to send less data through the API, as I can see he used up until 143 before.
But if you remove them the rest should work. (I'm not far enought to know if that generates issues in the dashboard later )

hope it helps, if you haven't solved it yet.