Monitoring energy usage with smart plugs, Prometheus and Grafana

Re:Monitoring energy usage with smart plugs, Prometheus and ... by kasey_junk on Sunday May 05, 2024 @05:41PM (#40268729)

I nerded out on this a few years ago and ended up buying a not well known device called a rainforest automation eagle (https://www.rainforestautomation.com/rfa-z114-eagle-200-2/). Its a pretty straight forward little linux device that reads your smart meter (after being enrolled via your utility). It exposes an xml api that I bridge to Prometheus (https://github.com/kklipsch/reagle).

I also bridge my utility (ComEd's) pricing feed to prometheus (https://github.com/kklipsch/comed_exporter). Between those 2 I get pretty good whole home utilization and pricing info graphed into Prometheus (and thus into Grafana).

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Re:Monitoring energy usage with smart plugs, Prometheus and ... by alexgorbatchev on Monday May 06, 2024 @09:18AM (#40274279)

Could you share how do you combine the hourly cost with wattage readings?

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Re:Monitoring energy usage with smart plugs, Prometheus and ... by sifttio on Monday May 06, 2024 @03:20PM (#40278480)

kwh x $

Price is generally a dollar figure for 1000W per hour.

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Re:Monitoring energy usage with smart plugs, Prometheus and ... by alexgorbatchev on Monday May 06, 2024 @06:41PM (#40280337)

Thanks! Unfortunately all my data readings are in kW. I've been trying to figure out how to get hourly roll-up working and then multiply each hourly reading by price in Prometheus.

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