EV Charging Patterns & Utility Demand Curves

Defining Electric Vehicles and Their Charging Infrastructure in Utility Terms

• Introduction to the terminology and key concepts utilities use to describe electric vehicles (EVs) and charging infrastructure.
• Explanation of the various components involved in EV integration, such as transformers, substation equipment, and distribution networks.

Evolution of Electric Vehicles and Charging Infrastructure

• Overview of the historical development of EV technology and its impact on the power grid.
• Examination of the advancements in charging technology and how utilities have adapted over time.

• A comprehensive look at the core systems—generation, transmission, and distribution—used to power EV charging.
• Discussion on how these systems are being upgraded to handle the additional load from EVs, with a focus on grid modernization efforts.
• Clarification of essential terms, such as power (kW) vs. energy (kWh), peak demand, and load factor, and how they apply to EV charging.
• Discussion on the importance of these metrics in managing and optimizing EV charging infrastructure.

• Analysis of an annual cycle of utility supply and demand to understand peak conditions, light load, and availability of different types of generation throughout the year
• Identify when specific components of the electric grid are at their most stressed and when they have flexibility
• Define curve shapes for EV charging including frequency of charging, peak demand, and total energy consumed
• Strategies for flattening the demand curve through time-of-use pricing, smart charging, and other load management techniques

• Detailed walkthrough of how the increase of EV adoption impacts each grid component, from individual customer service profiles up to regional generation
• Challenges with forecasting increased EV adoption
  • Examination of the difficulties utilities face in predicting the rate of EV adoption and the corresponding impact on grid demand.
  • Exploration of advanced forecasting models and tools being used by utilities to improve accuracy.
• Sizing of required system upgrades over time if no control strategies are enacted

• Combine the concepts of demand curves and charging profiles
  • Understand what an ideal solution from the utility perspective looks like
  • Understand what an ideal solution looks like from an individual owner or fleet manager perspective looks
• Optimizing potential solutions for both the utility and EV operator

Examination of how V2G technology can transform EVs from a load into a grid resource, providing services such as frequency regulation, voltage support, and load balancing.

• Analysis of the impact of bidirectional charging on grid stability and the economic benefits for both utilities and EV owners.
• Using the concepts previously established, walk through the impacts on utility demand curves if EVs act as a source instead of a load
• Size the opportunity for a utility and how to build a value stream out of this application
• Identify challenges and mitigations from an EV operator perspective

• Coordinating EVs and distributed renewable energy
• Integrating EVs into whole home or business consumption strategies
• Evolving battery technology for fast charging
• Looking beyond passenger cars: the electrification of planes, trains, and other modes of transport, and the implications for the electric grid and utility planning