OhmConnect is a free service that pays you every month for reducing your electricity usage automatically when it matters most by leveraging smart devices.
On days when there is a high demand for electricity, extra power plants have to turn on, and they tend to be more polluting.
If enough people take similar action, a dirtier power plant could be kept from turning on, which is the ideal scenario.
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Learn more at: https://www.npr.org/sections/alltechconsidered/2017/03/07/518175670/energy-savings-can-be-fun-but-no-need-to-turn-off-all-the-lights