Tesla Motors Club
I've recently had the first multi page monthly bill since our switch to Agile and looked at it properly today.
I'm puzzled about some of the data showing in the "Consumption kWh" column which provides the basis for the bill. Comparing with several other data sources it frequently seems wrong for brief use high energy appliances like the kettle, hob etc..... kWh usage on the IHD always matches within a few seconds to the appliance being turned on, likewise it registers on our Mynergi Zappi and PV inverter Solax-X Hybrid apps & in real time.
However although the bar graphs on the Agile bill follow basically the same mapping as I can see on the history of the other apps, the actual half hourly periods that the usage appears is sometimes several minutes behind the same usage as verified by the others (in a few cases more than 30 or 60 minutes behind - falling into a higher cost/kWh band, fortunately car charging doesn't look to be affected).
I appreciate that the billing data may not register much when there are a couple of minutes at 1kWh for a kettle in an otherwise low load half hour period but why does an equivalent peak appear in a subsequent low usage half hour which does not correlate with the other information I have? (example - kettle usage every day between 7-7.30 am but on some days the billed usage appears much later & when I check the inverter history, it shows at the correct time for that day)
On checking the bill, I've also noticed that although we often switch other devices on at the point where a significantly cheaper 30 min slot appears, on the bill this is sometimes shown in a higher cost slot, again not correlating with other data or our known usage pattern. I thought that a SMETS 2 meter (Octopus installed 30th July) stored data even when connection is lost and then released it once online again. This suggests that either something may be mismatched or maybe Octopus manually fill in the blanks to complete the bill and the discrepancies are during those periods?
I'm wondering if anyone else has experienced similar or can explain this - or maybe I'm missing something obvious.
Why does the IHD (which is getting real time data) always seem to match correctly to the house draw but the bill which presumably uses exactly the same information from the same meter appear to sometimes show it differently?
I'm puzzled about some of the data showing in the "Consumption kWh" column which provides the basis for the bill. Comparing with several other data sources it frequently seems wrong for brief use high energy appliances like the kettle, hob etc..... kWh usage on the IHD always matches within a few seconds to the appliance being turned on, likewise it registers on our Mynergi Zappi and PV inverter Solax-X Hybrid apps & in real time.
However although the bar graphs on the Agile bill follow basically the same mapping as I can see on the history of the other apps, the actual half hourly periods that the usage appears is sometimes several minutes behind the same usage as verified by the others (in a few cases more than 30 or 60 minutes behind - falling into a higher cost/kWh band, fortunately car charging doesn't look to be affected).
I appreciate that the billing data may not register much when there are a couple of minutes at 1kWh for a kettle in an otherwise low load half hour period but why does an equivalent peak appear in a subsequent low usage half hour which does not correlate with the other information I have? (example - kettle usage every day between 7-7.30 am but on some days the billed usage appears much later & when I check the inverter history, it shows at the correct time for that day)
On checking the bill, I've also noticed that although we often switch other devices on at the point where a significantly cheaper 30 min slot appears, on the bill this is sometimes shown in a higher cost slot, again not correlating with other data or our known usage pattern. I thought that a SMETS 2 meter (Octopus installed 30th July) stored data even when connection is lost and then released it once online again. This suggests that either something may be mismatched or maybe Octopus manually fill in the blanks to complete the bill and the discrepancies are during those periods?
I'm wondering if anyone else has experienced similar or can explain this - or maybe I'm missing something obvious.
Why does the IHD (which is getting real time data) always seem to match correctly to the house draw but the bill which presumably uses exactly the same information from the same meter appear to sometimes show it differently?