Summary of an Article Prepared by Grok: "Battery Storage Isn't Backup Storage at All, and Neither Is Pumped Storage. It's All A Balancing Act!" written by Thomas J Shepstone

Main Thesis of Article

• Battery storage and pumped hydro are not reliable backups for the electric grid. They function only as short-term balancing tools to smooth out supply-demand mismatches, not as dependable long-duration reserves.
  
  
• Pumped-Storage Hydro Explanation:
  • Uses surplus electricity (often at night) to pump water uphill into a reservoir.
  • Releases the water during peak demand to generate power.
  • Produces zero net new electricity over time — it simply moves energy from one period to another.
  • If these systems can be linked to also help stormwater runoff or peak stream flows associated with climate change and changes in natural rainfall patterns and floodwater management, this approach may provide other community benefits.
    
    
• Battery Storage Analogy:
  
  • Charges with excess power and discharges briefly (minutes to a few hours).
  • Helps stabilize intermittent renewables (wind/solar) but does not provide true backup for extended calm/cloudy periods.
    
    
• Real-World Example: Blenheim–Gilboa Pumped Storage Plant in New York, used by the author to illustrate the concept.
  
  
• Supporting Content: Includes two short explanatory videos by Paul Burgess (Climate Realism, UK) demonstrating how both technologies work.
  
  
• Broader Context:
  • Highlights irony: past environmental opposition to projects like Storm King, versus current push for renewables that depend on these same balancing technologies.
  • Critiques overhyping of storage as a solution for renewable energy intermittency.

Bottom Line: These technologies are limited grid-balancing aids, not substitutes for reliable baseload or backup generation.

I (Brian Oram) asked the AI (Grok) – Is the Article Misleading?

No, the article is not misleading on its core technical claims. It accurately describes the primary role of utility-scale battery storage (BESS) and pumped hydro as short-to-medium duration grid balancers, not long-term "backup" for extended renewable intermittency. (source)

Accurate Points:

• Pumped storage produces no net new energy — It is a net consumer due to round-trip efficiency losses (typically 70–85%, often around 79–80%). It shifts energy from low-demand (e.g., night) to high-demand periods. The Blenheim–Gilboa example is correct. (EIA data on efficiencies for these systems is about 80%, but that is a lot better than allowing the power to be lost to waste heat.)
  
  
• Batteries function similarly — They charge with surplus power and discharge for minutes to a few hours (most utility-scale systems average 1–4 hours). They excel at frequency regulation, peak shaving, and short-term smoothing of solar/wind, but are not designed or economical for multi-day backup.
  
  
• This aligns with how grid operators and engineers describe them: tools for balancing supply and demand, not substitutes for reliable baseload generation.

Nuances (Potential for Misinterpretation):

• "Isn't backup at all" — This is somewhat absolute. In practice, both can provide short-term backup during outages or sudden drops (e.g., batteries for hospitals, pumped hydro for peaking). They enhance reliability in specific scenarios but aren't a full replacement for dispatchable sources like gas, coal, or nuclear during prolonged low-renewable periods (days of calm/clouds).
  
  
• The article has a clear anti-renewables/opinionated tone (e.g., irony about environmentalists, critique of solar/wind push). This framing is subjective but doesn't distort the engineering facts.
  
  
• Long-duration storage (10+ hours) exists via pumped hydro or emerging tech, but current lithium-ion batteries are mostly short-duration. The article's emphasis on limitations is fair.

Overall Verdict

The article is technically sound and highlights a real issue in energy policy discussions — overhyping storage as a complete fix for intermittency. It may feel one-sided due to its perspective, but it doesn't mislead on how these technologies actually work.   I do like the idea of converting old quarries to pumped storage facilities that can be used helping to manage energy and peak streamflow events that might help with changing rainfall patterns in our region and assisting with maintaining baseflow conditions. 

For deeper context, watch the referenced Paul Burgess videos:

Video 1: https://youtu.be/oi-EaR-aiko?si=EN6fsSHyrKvqS9p8

Video 2: https://www.youtube.com/watch?v=_vXR82r-RFc