ELI5: Explain Like I'm 5

Open metering system

Open metering is a way to measure how much electricity or water is being used in a building. It's like a big counter that lets you keep track of how much you're using. It's like if you had a meter in your home that was able to tell you how much electricity or water you were using and then you could see how much you're using and change your habits to save energy.
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