Rule for storing total consumption on power loss in proxy item

[rlkoshak (Rich Koshak)]

See my reply in you original post.

Shelly - Power Meter resets total consumption on power loss

There are a few things that I can think of: When there is a power loss, you essentially throw away the delta since the power loss. I think you want to add the absolute value of delta to RotexHPSULwpTotalKWH when the delta is negative. You are working with small numbers. Computers are generally pretty bad and dealing with small floating point numbers. There are simple some numbers that are impossible to represent given the way programming languages typically represent floating point numbers…