In order to optimize power usage from his home solar panels, Frederick put a Raspberry Pi + Unicorn Hat to work as a custom energy monitor. Now he knows whether he’s taking from or giving back to the grid.
We recently had a digital electricity (and gas) meter installed by Fluvius. In order to make more efficient use of our solar power, I installed a little dongle from HomeWizard to the P1 port of the meter. Using an app, it is possible to monitor electricity taken from or pushed to the grid. The idea is then to use the bigger appliances (dishwasher, washing machine, etc … ) when there is leftover solar power available, rather than push it to the grid.
Code and a full explanation of the install process are available here.
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