Hello dmutz,
I have quickly checked on of the examples you mentioned
ecoinvent v3.0 (on website)
activity dataset "electricity production, lignite, DE"
ReCiPe Midpoint (H)/freshwater ecotoxicity
0.040201 kg 1,4-DCB-Eq per kWhecoinvent v2.2 (on website)
activity dataset "electricity, lignite, at power plant, DE [kWh]"
ReCiPe Midpoint (H)/freshwater ecotoxicity
0.038264 kg 1,4-DCB-Eq per kWhecoinvent v2.2 (from my local Umberto 5.6 installation)
activity dataset "electricity, lignite, at power plant, DE [kWh]"
ReCiPe Midpoint (H)/freshwater ecotoxicity
0.0382631 kg 1,4-DCB-Eq per kWh(see attached screenshot)
Without being a real expert on these datasets, I would still say that all values are plausible. the potential freshwater ecotoxicity value in ecoinvent v3 is slightly higher than in ecoinvent v2, but still in the same range (increase from 38.264 kg 1,4-DCB-Eq per MWh to 40.201 kg 1,4-DCB-Eq per kWh).
This change can be explained due to differences in the underlying activity datasets. The impact assessment system is exactly the same, as no updates were made to the LCIA methods by ecoinvent from v2 to v3.
There is a minimal deviation between the FETP value from ecoinvent v2.2 in Umberto (38.2631 kg 1,4-DCB-Eq per MWh) as compared to the value on the website (38.264 kg 1,4-DCB-Eq per MWh), but as far as I know the values on the website are shown rounded or truncated for legibility, but are exact in the downloaded dataset.
The value you are presenting (0,17 kg-DCB/MWh) is completely out of range, and I therefore assume that you are working with an outdated version of the ReCiPe method in your local installation.
Please verify that the root folder of your locally installed ecoinvent library is called "ecoinvent 2.2d".
The ecoinvent Centre made some changes to the impact assessment methods in 2010/2011, which led to the necessity of delivering updates to all our Umberto customers using this database.
Please see this communication for more info (unfortunately the link to the PDF file is broken, but I can try to find a copy and send it to you).
We also informed all our registered users directly and sent out new installation CDs at that time.
Please make sure you are running the latest version of the ecoinvent v2.2 library on your computer. If you are running the latest version already, and still get much different values, please contact our help desk again (support@umberto.de), so that we can try to figure out possible other reasons.