Are Smart Meters Dangerous? What The Research Says (2026)

Short answer: no study has shown that smart meters cause harm at the exposure levels they actually produce, and a smart meter on your wall exposes you to a small fraction of what your own phone does. That’s the research picture, honestly stated.

And yet I still think it’s reasonable to care about where your meter is and what’s on the other side of that wall, because “low compared to a phone” is not the same as “zero,” and the meter is the one transmitter on your house you didn’t choose. Here’s what the research actually says, what a smart meter really emits, and where the sensible middle ground is.

What A Smart Meter Actually Emits

A smart meter is a utility meter with a small radio in it. It reports your electricity usage back to the utility in short bursts, using radiofrequency signals in the same general family as WiFi and cell phones.

The detail that matters is the duty cycle. Your phone can transmit more or less continuously while you use it, pressed against your body. A typical smart meter transmits in brief pulses, often adding up to around a minute or so of total transmit time per day, from a box mounted outside on a wall, with distance and building material between it and you.

RF exposure falls off steeply with distance. At normal indoor living distances from an exterior meter, measured exposure lands at a tiny fraction of what the same measurement shows next to an active cell phone.

What The Research Says

The American Cancer Society’s page on smart meters lands where most health agencies do: smart meters emit RF at levels well below phones, and there’s no evidence linking them to cancer, while acknowledging the research on low-level RF in general is still evolving.

In 2011, the WHO’s cancer agency IARC classified radiofrequency fields broadly as Group 2B, “possibly carcinogenic” (the monograph is public). That classification was driven by heavy cell phone use studies, not meters, and 2B is IARC’s weakest positive category, shared with pickled vegetables and aloe vera extract. The WHO’s own Q&A on electromagnetic fields sums up the overall evidence the same way: no established health effects below international exposure limits.

There is no epidemiological study linking smart meters specifically to any health outcome. Given the exposure math, that’s the expected result: a meter that transmits a minute a day from outside your bedroom wall is a rounding error next to the phone that sleeps on your nightstand.

The Honest Caveats

Two things keep this from being a complete non-issue in my book.

First, meters vary. Some mesh-network meters relay traffic for neighboring homes, which raises their transmit time well above the minimum. You can’t tell from the outside which kind you have, and your utility can.

Second, placement is luck. A meter on the garage wall is a non-event. A meter directly behind the headboard of a bed, on the other side of a few inches of drywall, is the one scenario where I’d actually do something about it, not because studies show harm, but because it’s the highest-exposure version of the situation and the fixes are cheap.

What I’d Actually Do

If your meter is on the far side of the house from where people sleep: nothing. Spend your attention on the exposures that dominate, like the phone, the earbuds, and the router. My guide to smart meter radiation covers the measurement side in more depth.

If the meter sits behind a bed or a couch where someone spends hours: move the furniture to the opposite wall first, because distance is free and works better than anything you can buy. If the layout won’t allow it, a smart meter cover is the one product category here that does something measurable: a mesh faraday cage over the meter that knocks down the signal on your side while letting the utility still read it. My smart meter shields guide covers the options and the measurement results.

If you want certainty instead of reassurance: measure. An RF meter reading at the wall, then at pillow distance, settles the question for your actual house in five minutes. That’s the approach I trust more than any article, including mine.

Related Questions

Do Smart Meters Emit Radiation All The Time?

No. They transmit in short bursts, typically totaling around a minute of actual transmit time per day, though mesh-network meters that relay neighbors’ data transmit more often. Between bursts, the radio is quiet.

Is It Safe To Sleep Next To A Smart Meter?

The measured exposure through an exterior wall is far below international limits and far below your phone. That said, a bed directly against the meter wall is the highest-exposure version of the setup, so if it’s a few feet from your head, moving the bed to the opposite wall costs nothing and removes the question.

Can You Refuse A Smart Meter?

In many US states, yes. Utilities commonly offer an opt-out program that keeps a traditional analog meter, usually with a one-time fee plus a monthly manual-reading charge. Call your utility and ask about their smart meter opt-out policy.