Stock Analysis Calculations

The document outlines the calculation methodology for stock analysis of demand technologies, detailing how stock turnover, energy intensity, energy consumption, and emissions are derived using variables such as vintage, survival profiles, and degradation factors.

• Stock turnover is calculated based on the number of vehicles added in a year (Sales), the number of existing devices (Stock), and a lifecycle profile representing the fraction of devices surviving over time (Survival). The maximum number of vintage years (V) is automatically determined from the survival profile, capped at 30 years.
• Energy intensity for devices is determined by the energy use per new device purchased in a given year, adjusted by a degradation factor that represents how energy intensity changes as the technology ages; this factor equals 1 when the calendar year matches the vintage year.

APA

Stockholm Environment Institute (n.d.). Stock Analysis Calculations. https://cdn.leap.sei.org/Help24/Demand/Stock_Analysis_Calculations.htm

Chicago

Stockholm Environment Institute. Stock Analysis Calculations. n.d. https://cdn.leap.sei.org/Help24/Demand/Stock_Analysis_Calculations.htm.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=Stock Analysis Calculations |url=https://cdn.leap.sei.org/Help24/Demand/Stock_Analysis_Calculations.htm |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitutendstock, author = {{Stockholm Environment Institute}}, title = {{Stock Analysis Calculations}}, institution = {Stockholm Environment Institute}, url = {https://cdn.leap.sei.org/Help24/Demand/Stock_Analysis_Calculations.htm}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }