Loon LLC

Loon LLC was an Alphabet Inc. subsidiary working on providing Internet access to rural and remote areas. The company used high-altitude balloons in the stratosphere at an altitude of 18 km (11 mi) to 25 km (16 mi) to create an aerial wireless network with up to 1 Mbit/s speeds. A reference to the balloons used, Project Loon began as a research and development project by X (formerly Google X) in 2011, but later spun out into a separate company in July 2018. In January 2021, it was announced that the company would be shut down due to lack of profitability.

The balloons were maneuvered by adjusting their altitude in the stratosphere to float to a wind layer after identifying the wind layer with the desired speed and direction using wind data from the National Oceanic and Atmospheric Administration (NOAA). Users of the service connected to the balloon network using a special Internet antenna attached to their building. The signal travelled through the balloon network from balloon to balloon, then to a ground-based station connected to an Internet service provider (ISP), then into the global Internet.

In January 2021, Alphabet announced that Loon would be shut down.