We have a Smappee power monitor on our panel in our 'all electric' house to track consumption. The house panel is a sub panel of the main power supply to the property. The only meter is on the main supply and so does not differentiate the house loads. The only house loads not monitored by the Smappee is the water well submersible pump, water softener and iron filter.
Interesting to note the difference between Nov-Mar 2018-19 and 2019-20 with the past cold fall and warm winter.
This not intended to be a research-grade data collection and analysis so I have taken some liberties as to assumptions in the spreadsheet below.
- heating [3,433 kWh/$412]
- cooling [179 kWh/$21]
- plug load/water heating [3,900 kWh/$468].
Total consumption of 7,512 kWh is 6% higher than the PHIUS modeling in this 12 month period. At $.12 kWh it cost a total of $901.
We are on time-of-use (TOU) billing for power and it ranges from $.08 to $.16/kWh . Allowing for 43% going to heating (which is predominately nighttime to offset temperature lows and lack of solar) I arrived at an average of $.12/kWh .
Compared to our previous century farmhouse our heating bill is just 10%. Our total energy bill, with delivery charges factored in, is down to 20%.
And of course, thanks to our very clean power grid, our carbon footprint for ALL our energy is a miserly 272 kg of CO2 vs >10 T!
