Transportation Electrification Proactive Planning: Modeling Inputs & Assumptions Report

This document describes the key data definitions, categories, values, and sources of the transportation electrification (TE) modeling inputs and assumptions (I&A) for the California Public Utilities Commission’s (CPUC) Transportation Electrification Proactive Planning (TEPP) framework. The purpose of establishing the TEPP Modeling I&A is identify a common set of values and assumptions that can be used to model TE charging’s electric system impacts along highway corridors. The objective of this document is to identify and vet the best available data relevant to modeling transportation patterns, charging and fueling patterns, and expected zero emission vehicle (ZEV) charging technology adoption timelines and locations. The TEPP Modeling I&A will inform a Transportation Electrification Corridor Disaggregation Methodology (CDM) that can be used to disaggregate the CEC’s Integrated Energy Policy Report (IEPR) California Energy Demand Forecast. This methodology will provide localized insights to identify the timing, location, and size of expected TE load growth along highway corridors in California for use in existing planning and cost recovery processes. The TEPP Modeling I&A will also allow for consistent forecasting and scenario building across existing planning and cost recovery processes, including but not limited to the Distribution Planning Process (DPP) and Transmission Planning Process (TPP). This document focuses primarily on I&A for public charging of electric light-duty vehicles (LD) and a combined medium and heavy-duty vehicle category (MDHD). TEPP I&A are in alignment with IEPR I&A wherever feasible.