Unpacking Peter Thiel’s big bet on solar-powered cow collars

Founders Fund led Halter's $220 million Series E at a $2 billion valuation to back solar-powered cow collars.

Halter's system uses solar collars, low-frequency towers, and a smartphone app to create virtual fences and herd cattle remotely.

The collars collect continuous behavioral data to monitor health and fertility and are on over one million cattle across 2,000+ farms.

Halter has raised about $400 million total, is on its fifth hardware generation, and operates in 22 U.S. states.