“demands”

The simulator needs the following annual energy demands:

  "demands": {
    "space_heating_thermal": {
      "type": "climate_heating",
      "total_annual_kwh": 17855,
      "hourly_consumption_weightings": {
        "0" : 0,
        "6" : 1,
        "8" : 0,
        "16": 1,
        "22": 0
       },
      "target_circadian_phase_lag_hours": 3
    },
    "hot_water_thermal": {
      "type": "fixed",
      "total_annual_kwh": 2333.0,
      "hourly_consumption_weightings": {
        "0": 0,
        "7": 2,
        "8": 0.1,
        "22": 0
      }
    },
    "non_heating_electric": {
      "type": "fixed",
      "total_daily_kwh": 10,
      "hourly_consumption_weightings": {
        "0": 0.5,
        "7": 2,
        "21": 1,
        "23": 0.5
      }
    }
  },

The annual total demands are in your EPC certificate:

• “space_heating_thermal” is for room heating: state the hours of the day when your heating starts and when it stops. For example “0” : 0, “6” : 1, “8” means start the day with no heating, switch on at 6am, then off at 8am. Set “target_circadian_phase_lag_hours” to up to 6 hours according to how well your house is insulated. Use the “climate_heating” model to estimate heating power from “total_annual_kwh” and time of day and year;
• “hot_water_thermal” is for heating hot water: state weightings for hot water usage. For example, “0”: 0.5, “7”: 2, “21”: 1 means a 0.5 relative weighting from midnight, until 7am when weighting increases to 2 until 9pm when it reduces to 0.5. Use the “fixed” model to estimate heating power from “total_annual_kwh” and these weightings.
• “non_heating_electric” is daily electricity consumption excluding space and water heating (e.g. cooking, fridge, lighting, TV): best obtained by deducting from your electricity bill. As for hot water, use the “fixed” model and hourly weightings to allocate relative power according to time of day. For example, “0”: 0.5, “7”: 2, “21”: 1, “23”: 0.5 means a 0.5 weighting between midnight and 7am, then a 2 weighting until 9pm, then reducing to 0.5.