I am not sure I fully understand your question. To provide you with a helpful answer I would need to know:
1) Is your aim changing the shares of technologies contributing to the electricity mix of Germany (i.e x% coal, y% wind, etc.)?
2) To better support you on how you can use ecoinvent data, I need to know how you are using ecoinvent, eg. Software (SimaPro, Umberto, etc.), ecoinvent website, etc.
3) Which version of ecoinvent are you using (e.g. version 3.4, 3.5, etc.)
In the meantime, you can also consult the following FAQs: How are electricity market mixes modelled? & How can I see the technology mix of an electricity market?.
Lucia Valsasina, Data analyst, ecoinvent