We now have been running our net smart meter for more than a day now. I mentioned that we got our new net meter on this previous post.
Of course I am now curious how to read the meter so that I can decipher how much electricity we sent back to the grid. Here is a short video of what the meter is showing:
Initially the displayed information is quite cryptic, but looking at the meter’s label, I found this group of small prints.
These labels essentially tells us what is going on. The LED display cycles through 5 modes in total. The initial display is a segment test, which means all segments of the LED are displayed. This is a simple test to ensure that the LED display itself is functioning correctly. Next, it shows LST003, indicating that the next number it shows will be the amount of kWh of electricity that we ended up consuming or using. This is followed by LST004, another label indicating that the following number is the amount of kWh of electricity that is sent back to the grid.
Now with this new found knowledge, the above video shows that we used 13 kWh and exported 103 kWh since the meter was installed in the afternoon of May 4th.
In about 1.5 days, and bright sunny day yesterday, we generated and provided to our community electricity grid with a net of 90 kWh of energy.
There are 4 people in our house right now, and according to a recent CBC article our average carbon footprint is about 14.2 tonnes of CO2 per person. Doing a little more research, I found this white paper titled, “A Clearer View on Ontarios Emissions June 2019“. On page 8 of this paper, we see an annual average emissions factor (AEF) of 31 grams of CO2 per kWh. One tonne is 1,000,000 (a million) grams. This means to offset one individual, we need to offset 14,200,000 grams of CO2, and using the AEF this is equivalent to approximately 458,065 kWh!
To put this big number in perspective, I think our last month’s electricity bill only shows us using around 1,200 kWh of electricity.
It is clear that we will not be able to offset one of us, never mind all four of us by just using solar ourselves (at least not in Ontario). The idea of carbon neutrality is still a long ways off, and the above numbers show that we cannot do it alone. It will require every industry to do its part.
Update 2022-05-26 2:45pm: Took another reading outside. Used 313 kWh, Exported 1018 kWh, a net of 705 kWh. This with about 23 days of operation since May 04th.