Why This Giant Bag of CO2 is Actually Useful

Summary by Krater

This video examines grid-scale battery and energy storage alternatives to traditional lithium-ion batteries, including pumped storage hydropower, gravity batteries, iron-air batteries, and compressed CO2 batteries.

From the video

Answers: What are the alternatives to lithium-ion batteries for grid-scale energy storage?

• Grid-scale energy storage
• Pumped storage hydropower
• Gravity batteries
• Iron-air batteries
• Compressed CO2 batteries

What it concludes

• Pumped storage hydropower is the most common form of grid energy storage and predates lithium-ion batteries.
• Gravitricity attempted to use abandoned mine shafts as gravity batteries, but wound up voluntarily with under £8k assets.
• Energy Vault builds above-ground gravity storage facilities using heavy blocks made of dirt, water, and polymer.
• Iron-air batteries harness the process of iron rusting and unrusting to store and discharge energy more cheaply than lithium-ion.
• Energy Dome's CO2 battery pressurizes carbon dioxide into a liquid at room temperature to store and release energy.