What does the energy consumption cost?

Comments

• TarikFaik Member

  January 2016

  I like your idea
• RobertLijkendijk Member

  January 2016

  Would be nice to see costs in euro's, next to consumption in kWh  
• novaflash Member

  January 2016

  Sort of tangent to this but still related; there's a lot of z-wave equipment that can be turned on or off but does not register used power. It has no power meter built in. For example a simple on/off Z-wave switch without power consumption measuring built in doesn't report back how much energy was used. My point is this; it would be great if you could declare for any device how much energy on average it would consume if it was on. For example if you attach a 60 watt light to a Z-wave on/off switch, when it's on, it starts counting the power consumed based on the assumption that there's a 60 watt load. This is what the Fibaro Home Center 2 for example can do. Same for dimmer devices - take a guesstimate at % * watts = power consumed, when device is on.
  
  In general having a well worked out power consumption table/graph would be much welcomed.
• Phaeton Member

  January 2016

  Thats exactly what i wanted to request. I have seen this on fibaro and really liked it. So big +1
• vsub Member

  January 2016

  Keep in mind that the energy price can be different on peak and off-peak times (and these times differ per region), when changing your contract (or having a variable price contract) or even when using solar power (although I would show generated power as general cost savings, not as 'cheaper energy')... So logging actual costs will require a lookup table with all prices and active date/times. Otherwise, only averages/approximations could be given.
  
  Also, the Z-Wave device itself consumes electricity (I'll admit not much, Fibaro <1.4W and Qubino <0.7W), that it will not report back. The measurement accuracy may also be a couple percent off (the Fibaro Dimmer 2 using a 2-wire connection with a resistive load at <70% brightness up to 4%) and only updated/sent on a predefined power change or time interval.
  
  If energy metering is not available for a device, it would be great to set a virtual power value (in Watts), like @novaflash suggested. Homey would only have to keep track of when the device is turned on/off and use the virtual value as an estimated energy consumption.
  
  The best way would be to monitor all consumed (and generated/exported) energy using a simple kWh-meter (via S0 pulse counting and eg. an Arduino) or direct connection to a smart meter (P1/DSMR). This has to advantage to also show energy consumption relative to the whole household (or a specific room within Homey) and from there on calculate an estimate of energy costs per device.
• Emile Administrator, Athom

  January 2016

  I have two ideas for this:
  

  1. In insights, add a formula that transforms your data (e.g. 3*value)
  2. Create a report functionality that generates a weekly/monthly/quarterly/yearly report of your home (this might take longer, obviously)
     
• RobinVanKekem Member

  January 2016

  I already see myself shouting through the living room to my wife:
  "Honny, the financial report of Homey is in!" 
• bierre Member

  January 2016

  @emile the idea of the formula in the report section sounds good!
• ErikVanDongen Member

  January 2016

  Data transformations in formula's would be a nice feature. You will need it in scenario's like:
   - watts to kilo watts
   - sensordata devision (some stupid sensors send humidity or lux multiplied by 100, i know apps should fix this)
  
  Also count functions are interesting:
   - how often is movement seen in a period of time
   - doorbell counter
  
  It's getting more complex if we could calculate things like:
   - for how long was a doorsensor in state 'opened' in a period of time
   - for how long was a lightbulb in state 'on' in a period of time
   - sum of watts in a specific time range (00:00 - 07:00) in a period of time * tarif