Please fix the Energy IQ feature ...
Following on from another conversation here (and inspired by @eezytiger ) I checked with OVO as to how they are calculating the figures shown on their website. I put together this spreadsheet and, given the fluctuations due to the calorific value of gas, it seems to tally up.
Now that I understand this, I can point out where the Energy IQ feature is flawed.
- My tariff price is set to £/kWh, which I enter into tado
- Any data I add (meter readings) are then set to kWh, however, my meter measures m3. And this is the problem with the app.
In order for me to be able to enter a kWh value in the app, I need to take the kWh consumption from the previous day (from the OVO website), add this to a fictitious 'meter reading' (is actually a cumulative total) and enter this. However, the tado app doesn't allow the decimal precision needed.
The 'Display Unit' setting might make it easier to enter accurate meter readings, however, this is only applied to the Energy IQ consumption curve, and not the meter reading. And so is unhelpful.
For completeness, the OVO guidance in converting m3 meter reading to kWh is:
1 - Take your meter reading (m3)
2 - Multiply by a Volume Correction Factor (1.02264)
3 - Multiply by the gas Calorific value (40.0) - this may vary by supplier
4 - Divide by kWh conversion factor (3.6)
5 - Gives kWh (calculated)
In my opinion, this algorithm should be built into the tado app, along with the automatic gathering of the meter readings.
This would, I believe, make this a killer feature, and one worth the £26 / year (or perhaps more).