# Thermal Energy

![The super-efficient heat source hidden below Amazon's Seattle headquarters](https://assets.aboutamazon.com/dims4/default/9666a71/2147483647/strip/true/crop/2000x1333+0+0/resize/1115x743!/quality/90/?url=https%3A%2F%2Fassets.aboutamazon.com%2Fca%2F47%2F7b4d4dcc405993be3330836b033b%2F20171030dopplerdistrictenergy-js-21.jpg)
- [The super-efficient heat source hidden below Amazon's Seattle headquarters](https://www.aboutamazon.com/news/sustainability/the-super-efficient-heat-source-hidden-below-amazons-seattle-headquarters)