thank you for your answer!

yes, I did check the electricity process from ecoinvent separately. it is the value of 643,6 g CO2/kWh in this case... thus, three processes in my model have the true value, at least.

just for the basic understanding: in the model basically the treatment of treated wastewater is displayed (first ozonation, then mixing with a stream and other surface waters, then phosphorus removal before it is led to a lake preventing eutrophication).

anyway, today I updated the volumetric load going through the process "ozonation". there is now a **reduction of 6,5%** of water going through "ozonation", so the electricity consumption is **reduced by 6,5%** accordingly. BUT now the CO2-emissions **increased by 10%** in this process. there were no other changes made in this process.

now, the specific value for "electricity for ozonation" is 568,2 g CO2/kWh... yesterday it was 504,0 g CO2/kWh...

therefore, changing materials properties from "good" into "bad" doesn't seem to be the solution for the origin of this problem... from my understanding, in the excel-file the absolute amount of kg CO2 emissions per process should be displayed as it was in former Umberto 5.6, or not?

kind regards!