Annual Emission Constraints

This guide explains how to configure annual emission constraints within the LEAP software, specifically for scenarios utilizing least cost optimization of a Transformation module.

• Annual emission constraints in LEAP are used to set a maximum yearly limit for any specific pollutant. The software's optimization calculation attempts to find the least cost configuration of a Transformation module to ensure total system-wide emissions remain under this limit.
• While emissions can originate from Non energy sectors, Demand sectors, and Transformation modules, LEAP's optimization calculations typically only apply to one Transformation module, such as the electric generation module.
• Emission constraints are only functional and relevant when running scenarios that include least cost optimization of a Transformation module; they are ignored in scenarios without these calculations.

APA

Stockholm Environment Institute (n.d.). Annual Emission Constraints. https://cdn.leap.sei.org/help24/Transformation/Emission_Constraint.htm

Chicago

Stockholm Environment Institute. Annual Emission Constraints. n.d. https://cdn.leap.sei.org/help24/Transformation/Emission_Constraint.htm.

Wikipedia

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

BibTeX

@techreport{stockholmenvironmentinstitutendannual, author = {{Stockholm Environment Institute}}, title = {{Annual Emission Constraints}}, institution = {Stockholm Environment Institute}, url = {https://cdn.leap.sei.org/help24/Transformation/Emission_Constraint.htm}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }