I am trying to implement an EPD for a construction product and I combined three databases (EF, ELCD and NEEDS) to include all the needed inputs and outputs to my product. Nevertheless, I noticed that when assessing the impact of my product, I do not get results for all the indicators requested in the EN 15804 (e.g. Energy indicators).
In previous questions, I read that is recommended to use ecoinvent and EuGeos for EPD, which are not free.
Is it possible to realize an EPD using only free software and free databases?
If any flow/process/result is missing, can I calculate by my own (e.g. energy) and add them manualy?
Thank you very much,