Energy Storage and Batteries: Ragone Plots, Electrochemistry, and Grid-Scale Challenges

Overview

This talk builds a big picture of energy storage from planetary energy flows to the central role of electricity storage, then moves into batteries, chemistry, and why storing energy matters for our technology-driven world.

• Why electricity is pivotal across major sectors and why storage unlocks its potential.
• Introduction to Ragone plots that compare energy density and power delivery.
• Foundational battery chemistry and why electrochemistry offers advantages for energy storage.
• Real-world context from grid integration, renewables, and programs like Little Sun.

Introduction: Energy storage as a planetary scale problem

The talk begins with a big-picture view, arguing that energy storage is essential because electricity must be stored to enable deeper electrification across transport, industry, and buildings. The speaker highlights the planet as a vast energy storage system, with energy flowing from the sun through wind, tides, life, and rock formation, and notes that the line between storage needs is a matter of utility and timescale. A key point is that most energy storage needs are for timescales of a year or less, and electricity storage represents the primary bottleneck to realizing widespread electrification.

"Entropy is not about disorder, and it's not simply about looking neat; it's about how many states a system can access."