how much energy are we using?

We finally got a smart meter installed in the flat. Octopus Energy have a REST API. I have hardcore bash scripting skills. gnuplot + curl + jq + cron combined to provide these graphs which update every so often.

Not sure how often Octopus provide updates through the API, it seems to be a few to several hours behind reality. Not sure if this is because our smart meter is still new or what.

graph displaying last 24h of energy usage in kwh

graph displaying last 24h of gas usage in m^3

Snippets of how I did this

            curl -u "${api_key}:" "https://api.octopus.energy/v1/electricity-meter-points/${elec_mpan}/meters/${elec_serial}/consumption/?order_by=-period" \
| jq -r '.results[] | {interval_start,consumption} | join(" ")' \
| head -n48 \
> elec-24.dat

            set xdata time                      
set timefmt "%Y-%m-%dT%H:%M:%SZ"     
set format x "%H:%M"                 
set key off                          
set xtics rotate by -45              
set title "Electricity Usage (24h) kWh"   
  
set terminal png            
set output 'elec-24.png'  
  
plot 'elec-24.dat' using 1:2 with linespoints linetype 4 linewidth 2