Experts say they are safe, but some worry smart meters are making them sick or are even spying on them.
The FCC approved the use of smart meters by utilities and said their risk was minimal.
Residents are blaming the devices for health problems or fires.
Some even claim their two-way communications ability allows utilities and the government to snoop.
Devised by utilities as a way to save energy, cut monthly bills and even reduce carbon emissions, "smart meters" that give more accurate data about a home's electricity use are facing a backlash in communities across the country.
Some residents are now blaming the devices for health problems or fires, and say their two-way communications ability will allow utilities and the government to snoop on them.
These fears have forced some states to allow people to "opt-out" of the smart meter program, which supporters say will actually make them less effective in the long-run to yield environmental benefits.
"If done right, smart meters allow us to eliminate waste from the system," said Jim Marston, vice president of energy for the Environmental Defense Fund, which supports the use of new smart meters.