this is not a configuration issue, but I could not find a better category.
I track my electricity consumption since last year at least, and I check the historical statistics every now on then. Last time I did that, I noticed something is off in April. My fridge and my microwave are supposed to have consumed 800 kWh instead of 40 kWh usually. This breaks the yearly statistics.
Yes.. Settings → Developer Tools → Statistics. Click the ramp icon next to your energy sensors and navigate to the time and date the outlier occurred. Replace it with an average of the before and after measurements.
I would be indeed interested to know what caused it. But since it happened only twice in a year and it is easy to fix, it is not worth the effort currently.