# The solution to our energy problems is … a toaster

- Institution: TED
- Department: TED-Ed
- Speaker: Rachel Yang
- Year: 2025
- Level: For everyone
- Language: English
- Subjects: Earth and environment, Teaching and learning
- Source: [TED](https://www.ted.com/talks/rachel_yang_the_solution_to_our_energy_problems_is_a_toaster)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Industrial manufacturers spend a huge amount of energy generating heat to make everyday materials and objects, like cement, steel, and paper. And since most companies use fossil fuels to reach these high temperatures, industrial heat accounts for 20% of our annual global carbon pollution. Thankfully, this is where a century-old technology comes in. Rachel Yang explores how heat batteries work. \[Directed by Sofia Pashaei, narrated by Pen-Pen Chen, music by Cem Misirlioglu, WORKPLAYWORK\].

## Lectures

1. [The solution to our energy problems is … a toaster](https://invisiblenetwork.ai/learn/ted/rachel_yang_the_solution_to_our_energy_problems_is_a_toaster/f3c72efa185a), 5 min (TED's player)