Feedstock Fuel Shares

The document defines feedstock fuels as those converted within a process, noting that process efficiency is the ratio of total output energy to total feedstock energy. It distinguishes feedstock fuels from auxiliary fuels, which are subsidiary energy inputs not converted in the process and therefore excluded from efficiency calculations. Most processes typically use a single feedstock fuel with a 100% share.

• Process efficiency is calculated as the ratio of the total energy content of all output fuels produced to the total energy content of all feedstock fuels consumed.
• Feedstock fuels are distinct from auxiliary fuels; while feedstocks are converted within the process, auxiliary fuels are subsidiary energy inputs that are not converted and are excluded from the overall energy efficiency calculation.
• A fuel share represents the percentage of energy input a specific feedstock provides to its parent process, and in most cases, a single feedstock fuel is used, resulting in a 100% share in Current Accounts.

APA

Stockholm Environment Institute (n.d.). Feedstock Fuel Shares. https://cdn.leap.sei.org/help24/Transformation/Feedstock_Fuel_Shares.htm

Chicago

Stockholm Environment Institute. Feedstock Fuel Shares. n.d. https://cdn.leap.sei.org/help24/Transformation/Feedstock_Fuel_Shares.htm.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=Feedstock Fuel Shares |url=https://cdn.leap.sei.org/help24/Transformation/Feedstock_Fuel_Shares.htm |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitutendfeedstock, author = {{Stockholm Environment Institute}}, title = {{Feedstock Fuel Shares}}, institution = {Stockholm Environment Institute}, url = {https://cdn.leap.sei.org/help24/Transformation/Feedstock_Fuel_Shares.htm}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }