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NordShifts

Energy

Run your home on the cheap hours

Connect your heat pump, EV charger or water heater to the published auction prices. The feeds are free, need no key and use only published prices, never forecasts.

Right now

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Calendar

Subscribe in Google Calendar, Outlook or Apple Calendar: one event per day for the cheapest run of hours.

https://nordshifts.com/api/electricity/feeds/LV/cheap-hours.ics?hours=3

JSON feed

Current price, rank, cheap flag, today's and tomorrow's prices. Refreshed every 5 minutes.

https://nordshifts.com/api/electricity/feeds/LV/now.json?hours=3

Home Assistant

Add this to configuration.yaml. The binary sensor turns on during the cheapest hours; use it in an automation.

rest:
  - resource: https://nordshifts.com/api/electricity/feeds/LV/now.json?hours=3
    scan_interval: 300
    sensor:
      - name: "Electricity price LV"
        unique_id: nordshifts_price_lv
        value_template: "{{ value_json.now.price if value_json.now else none }}"
        unit_of_measurement: "EUR/MWh"
        json_attributes_path: "$.now"
        json_attributes: [rank_today, level, ts]
    binary_sensor:
      - name: "Cheap electricity LV"
        unique_id: nordshifts_cheap_lv
        value_template: "{{ value_json.now.is_cheap if value_json.now else false }}"

Shelly script

Paste into Scripts on a Shelly Plus/Pro relay: it switches on during the cheapest hours and checks every 5 minutes.

// NordShifts: relay on during the cheapest 3 hours of the day (LV)
let URL = "https://nordshifts.com/api/electricity/feeds/LV/now.json?hours=3";
function check() {
  Shelly.call("HTTP.GET", { url: URL, timeout: 15 }, function (res, err) {
    if (err !== 0 || !res || res.code !== 200) return;          // keep the last state if the feed is unreachable
    let data = JSON.parse(res.body);
    let on = data.now !== null && data.now.is_cheap === true;
    Shelly.call("Switch.Set", { id: 0, on: on });
  });
}
check();
Timer.set(5 * 60 * 1000, true, check);

Day-ahead auction prices in EUR/MWh before taxes, grid fees and supplier margin. Fair use: one request every few minutes per home.

Run your home on the cheap hours · NordShifts