Home CO2 consumption

Configuration
1

Hello,

I want to add a sensor in my house : the today CO2 consumption.

For that, I get values from :

  • co2signal to get co2eq for energy making.
  • smappee for Smappee Home Power Today (kwh used during the day)
  • smappee water consumption

As I found on internet that 1 liter of water corresponds to 0.1 kg of CO2 produced (for treatment, production and distribution), I can :

  • multiply the today average co2eq value with home Power Today
  • add water consumption x 0.1 kg

This is cool but it’s not totally accurate.

Do you have some ideas to make this more accurate ?

Damien

1 Like
2

Where do you think the inaccuracies are? Are you missing any significant contributors like gas, fuel oil?

In the UK, the CO2 to generate electricity varies throughout the day due to high levels of wind generation. Last 24h in my region, y-axis is g/kWh:

image

If you can find similar data for wherever you are, and if you can track power consumption, you could work out an instant and cumulative CO2 contribution from your electricity.

Your water CO2 seems high: UK figures are allegedly about 0.3g/litre, or 0.7g/litre if it all goes back for sewage treatment (2007 figure in table 4.1 on the page numbered 18).

3

I do the mean of the day, what’s why I said that this is not very accurate. For the other CO2 sources, I use bike and public transport all the day and no gaz in the house. But you’re right, I should have add them if I use them.