I am new to ecoinvent and LCA, I have modeling question as per description of a process I could not conclude how it should be used. I am working in openlca with ecoinvent 3.4 cutoff database.
I have created el mix process with different technologies contributing to it (%coal, %wind ete) in high voltage producing el mix of 1kWh, as my topic is households el consumption and to make it more realistic, I would need to transform the high to medium voltage. How the transformation process should be used? If I consider it as input to el mix adding up all the technologies used which amounts to 1 kWh as mentioned, the transformation process has the highest impact, which should not be correct. How it should be regarded as input, output, another system? Should my technolgies be modeled to 50% of el mix and the transformation as 50%? Is that the correct way? Or I am not looking at it in correct way, I would appriciate help.