International Industrial Ecology Day 2021

We propose a methodology to add new technologies into Environmentally Extended Input Output (EEIO) models. We illustrate the method for the USEEIO model, for the addition of second generation biofuels (Naphta, jet fuel and diesel fuel). The methodology consists in adding three new sectors (three different technologies) and 1 new bio-commodity. This new bio-commodity will partially substitute a similar (in functionality) commodity in baseline economy. How much substitution (%) is a variable of the model. Using this %, current use (in Use table) of the traditional commodity is now transferred to the bio-commodity. The Make table is modified assuming the three new industries are the only ones producing the new bio-commodity. The new bio-commodity and new industries inputs, outputs and Value Added components comes from process-based LCA studies of these industries. Process-based LCA inputs and outputs per physical functional unit were transformed to prices and assigned to commodities and environmental flow categories in the EEIO model.
The methodology can be applied to other technologies.