I think is your config file content:
A) All is duplicated (at least in your post)
B) @@ELECTRICITYCOST=[{"HourStart":0,"HourEnd":23,"CostKwhBTC":0.0000986078}] --> @@ELECTRICITYCOST=[{"HourStart":0,"HourEnd":23,"CostKwh":0.0000986078}]
Test it and tell me
You are correct - good eye - I completely missed that - thank you