Fuels

The document describes the functionality of the LEAP software's Fuels screen, which allows users to view and edit a database of fuels. It details how to manage fuel properties such as net energy content (lower heating values), chemical compositions (carbon, sulfur, and nitrogen), and classifications (fossil, renewable, biomass, secondary fuel, and electricity). The guide explains how to customize fuel names for local languages, assign fuels to groupings for aggregated reporting, and specify land-type disaggregation for biomass and renewable resources. It also notes that the default database is based on IEA and UN sources, though users can modify data to reflect specific regional conditions, particularly for coal and wood.

• The LEAP Fuels screen utilizes a default database based on international standards from the IEA and UN, though users can edit energy contents for fuels like coal and wood to match specific study areas.
• LEAP classifies fuels into five distinct types: fossil resource, renewable resource, biomass resource, secondary fuel, and electricity, which the software uses to determine how each fuel is handled in the analysis.
• Energy contents in LEAP are always recorded as net (lower heating values), with pure energy forms like electricity and heat defined as 1 GJ/GJ.
• The software allows for the entry of chemical composition data—such as density and percentages of carbon, sulfur, and nitrogen—to more accurately calculate environmental emissions, such as CO2 from coal-fired plants.

APA

Stockholm Environment Institute (n.d.). Fuels. https://cdn.leap.sei.org/Help24/Supporting_Screens/Fuels.htm

Chicago

Stockholm Environment Institute. Fuels. n.d. https://cdn.leap.sei.org/Help24/Supporting_Screens/Fuels.htm.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=Fuels |url=https://cdn.leap.sei.org/Help24/Supporting_Screens/Fuels.htm |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitutendfuels, author = {{Stockholm Environment Institute}}, title = {{Fuels}}, institution = {Stockholm Environment Institute}, url = {https://cdn.leap.sei.org/Help24/Supporting_Screens/Fuels.htm}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }