Climate Connections: Illinois Invests in Large-Scale Battery Storage

Host: Dr. Anthony Leiserowitz
Guest: Kavi Chatham, Vote Solar
Date: March 20, 2026

Episode Overview

This episode spotlights Illinois’ major legislative investment in large-scale battery storage to accelerate the state’s clean energy transition. Dr. Anthony Leiserowitz discusses how the new law, championed by Governor J.B. Pritzker, will enable Illinois to store and better utilize renewable energy, ultimately reducing both carbon emissions and utility costs for consumers.

Key Discussion Points and Insights

1. Illinois’ Landmark Clean Energy Legislation

• Introduction to the Law
  • [00:01] Dr. Leiserowitz explains that in January, Governor Pritzker signed a law aimed at boosting clean energy use in Illinois by focusing on energy storage.
    • “In January, Governor J.B. Pritzker of Illinois signed a law designed to increase the use of clean energy in the state by investing in energy storage.” – Dr. Anthony Leiserowitz [00:01]
• Purpose of Storage
  • [00:16] Kavi Chatham from Vote Solar explains the importance of battery storage: it addresses the intermittent nature of renewable resources by storing excess energy and releasing it when needed.
    • “The wind isn't always blowing and the sun isn't always shining. Battery storage really solves that problem by being able to store excess clean energy and release it later, especially during times when folks are using a lot of energy.” – Kavi Chatham [00:16]

2. Scope and Impact of the Battery Storage Initiative

• Clean and Reliable Grid Affordability Act
  • [00:32] Illinois will acquire 3 gigawatts of battery storage over five years, enough to power millions of homes during high demand periods.
    • “The law directs the state's power agency to acquire 3 gigawatts of battery storage within about five years. That's enough to power millions of homes during hours when the demand for energy is high.” – Dr. Anthony Leiserowitz [00:32]
• Economic and Environmental Benefits
  • Storing energy when it’s cheap and abundant helps avoid reliance on expensive and polluting fossil fuels during demand spikes.
  • [01:09] Dr. Leiserowitz notes that this investment is projected to save Illinoisans billions on utility bills over the next two decades and accelerate clean energy adoption.
    • “This investment in batteries is expected to save people billions of dollars on their utility bills over the next 20 years and speed up the transition to clean energy.” – Dr. Anthony Leiserowitz [01:09]

3. Consumer Impact

• Grid Charge and Cost Savings
  • [01:03] Kavi Chatham acknowledges there will be a new charge on bills to support battery storage, but analysis shows net savings will outweigh the costs.
    • “Customers will see a charge on their bills for battery storage, but ultimately the savings are shown, through analysis to be greater than the cost.” – Kavi Chatham [01:03]

Notable Quotes

• On Solving Renewable Intermittency:
  “Battery storage really solves that problem by being able to store excess clean energy and release it later, especially during times when folks are using a lot of energy.”
  – Kavi Chatham [00:16]

• On Statewide Benefits:
  “This investment in batteries is expected to save people billions of dollars on their utility bills over the next 20 years and speed up the transition to clean energy.”
  – Dr. Anthony Leiserowitz [01:09]

Key Timestamps

• 00:01 – Illinois signs new clean energy storage law
• 00:16 – The challenge of renewable energy intermittency and storage
• 00:32 – Details of the Clean and Reliable Grid Affordability Act
• 01:03 – Consumer costs and overall savings
• 01:09 – Projected long-term economic and clean energy impacts

This concise yet informative episode effectively explains how Illinois’ bold move to invest in large-scale battery storage is a crucial step in modernizing the grid, unlocking more renewables, and delivering direct economic benefits to residents—all within a hopeful, solutions-driven tone.