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The Environmental Loadings Factors screen allows users to define environmental impacts for technologies as either numeric values or expressions. It provides tools for selecting numerator and denominator units, converting between different unit sets based on technology efficiency or transportation service, and calculating final controlled loading factors when pollution controls are applied.

The TED Expression Builder is a tool for editing environmental loadings expressions through a dual-pane interface. It allows users to incorporate variables (such as carbon, sulfur, energy, and ash content) and molecular weight constants via drag-and-drop or double-clicking. The tool includes a direct-entry editing box, quick-access mathematical operators, standard editing functions (Cut, Copy, Paste), and a verification feature to ensure expression validity.

The Analysis View in LEAP allows users to build the structural framework of their energy model through a tree organized by categories such as Demand, Transformation, and Resources. Users enter data and modeling relationships using mathematical expressions in data entry tables, which support color-coding to distinguish between explicitly entered and inherited values. The view includes tools for scenario management, unit conversion, and expression validation, alongside a bottom pane for visualizing data via charts and tables, documenting references in a Notes tab, and constructing complex formulas in an Expression Builder.

The Effects screen in LEAP allows users to view, edit, and add data for 258 default environmental effects, including greenhouse gases and local air pollutants. The software integrates GWP values from IPCC Assessment Reports (AR1 through AR6), enabling users to calculate emissions in physical tonnes or CO2 equivalents. While the main system focuses on effects directly associated with energy use, the Impact Benefits Calculator (IBC) module can be used for indirect health and air quality impacts at a national scale.

The document describes the functionality of the cost-benefit summary report in LEAP, which provides a tabular and chart-based overview of cumulative discounted costs and benefits across demand sectors and transformation modules. It details how the tool calculates net present values, handles environmental externality costs, and reports avoided greenhouse gas emissions in tonnes of CO2 equivalent based on IPCC global warming potential factors.

The Results View in LEAP allows users to analyze model outputs using four primary tabs: Chart, Table, Split, and Diagnostics. Users can customize reports by selecting result types (e.g., Energy Demand, Social Costs), dimensions (years, branches, fuels, scenarios), and scaling factors. Advanced features include the use of tags as reporting dimensions, composite dimensions for side-by-side comparisons, and multi-level reports for disaggregated branch analysis. The tool provides extensive formatting options for charts and tables, the ability to save 'Favorite Charts' for quick access, and an auto-refresh toggle for managing large datasets.

The Scenario Explorer is a tool in the LEAP software that allows users to adjust 'Key Parameters' via slider bars to see immediate impacts on scenario results. It supports the creation, locking, and filtering of scenarios, and enables the interactive toggling of 'mini-scenarios' through a multiple inheritance feature to build complex climate mitigation scenarios.

The document provides a detailed technical walkthrough of the Settings menu in LEAP, covering the Scope & Scale, Years, Calculations, Costs, Optimization, IBC, Internet, Mapping, Folders, and Scripts tabs. It explains how users can enable specific analysis modules—such as energy demand, transformation, and environmental effects—and configure critical parameters like base years, discount rates, and optimization solvers. The guide also details the integration of the Impact Benefit Calculator (IBC) for health and climate impact modeling and the use of GIS shape files for geographical mapping of results.

The Technology and Environmental Database (TED) is an open, publicly accessible resource integrated into LEAP that provides quantitative data on approximately one thousand energy technologies. It aggregates information from global and regional institutions to assist analysts, particularly those in developing countries, in calculating environmental loadings for energy scenarios.

The document describes the 'tree' in LEAP as a hierarchical outline used across Analysis, Results, and Notes views to organize data structures. It details the primary top-level branches—including Demand, Transformation, Resources, and Non-Energy Sector Effects—and explains tools for navigating the model, such as filtering and bookmarks.

The document describes the View Bar in LEAP, which allows users to navigate between different system views. It details the Analysis View for data and model creation, the Results View for customized charts and maps, the Energy Balance View for standard tables, and Sankey diagrams for visualizing energy flows. Additionally, it explains specialized tools for Cost-Benefit Summaries, Affordability Analyses, Marginal Abatement Cost Curves (MACCs), Decomposition Reports, and the Technology and Environmental Database (TED).