Skip to Content

AT&T’s Plan to Hack the Electrical Grid to Provide Cheap Wireless Broadband

Shooting wireless signals along power lines could widen Internet access.
September 20, 2016

Getting electricity to every home and business was one of the last century’s great infrastructure challenges in many parts of the world. AT&T says that the electrical grid can help solve this century’s challenge of making high-speed Internet universally available.

Wireless hardware developed by AT&T upgrades electrical poles to deliver high-speed wireless broadband.

A new project unveiled today, called AirGig, uses power lines to guide high-speed wireless data signals over long distances, upgrading electrical infrastructure to double as Internet infrastructure. AT&T has been testing the technology by linking up its office buildings and is searching for a community to host a public test next year.

John Donovan, AT&T’s chief strategy officer, said Tuesday that piggybacking on power lines makes AirGig much cheaper than laying traditional data cables or installing the towers and antennas of conventional wireless infrastructure. That means AirGig could transform broadband availability in rural areas, whether in the U.S. or overseas, he said.

In the U.S., people in rural areas and with lower incomes are much less likely to have access to broadband (see “The Next President Will Inherit America’s Embarrassing Digital Divide”). Infrastructure costs are a major reason more than half the world’s population is without broadband access.

AirGig involves mounting small plastic antennas on power lines so that they can draw power from them wirelessly and shoot wireless signals through the air. Those signals don’t travel inside the cables but are tuned to use them like guard rails. Each link can carry multiple gigabits of data, according to AT&T. An AirGig system would use conventional cellular or Wi-Fi antennas to offer connectivity to people and their devices.

Because it doesn’t send data signals through the electricity cables themselves, AT&T says, its system can avoid the cost and reliability problems that plagued earlier schemes to transmit broadband over power lines. The company says it is open to both using AirGig on its own network and offering it to other companies.

AT&T’s cable-hugging wireless connections use millimeter-wave signals with higher frequencies than Wi-Fi or cellular connections. The company joins others betting that millimeter-wave wireless can slash the costs of Internet infrastructure.

Google Fiber, the search giant’s project aimed at shaking up U.S. broadband, has launched fiber-optic networks in several U.S. cities but is pivoting to focus on the same wireless technology (see “Google Fiber Stalls and the Industry Gears Up for Ultrafast Wireless”). Millimeter-wave signals also underpin a wireless broadband project launched by Facebook this year (see “Facebook is Testing a Super-Speed Public Wi-Fi System”).

Keep Reading

Most Popular

This new data poisoning tool lets artists fight back against generative AI

The tool, called Nightshade, messes up training data in ways that could cause serious damage to image-generating AI models. 

The Biggest Questions: What is death?

New neuroscience is challenging our understanding of the dying process—bringing opportunities for the living.

Rogue superintelligence and merging with machines: Inside the mind of OpenAI’s chief scientist

An exclusive conversation with Ilya Sutskever on his fears for the future of AI and why they’ve made him change the focus of his life’s work.

How to fix the internet

If we want online discourse to improve, we need to move beyond the big platforms.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at with a list of newsletters you’d like to receive.