Charging Costs/ Option to change Charging rates

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/charging-costs-option-to-change-charging-rates/
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I'd like to customize the charging costs per KWh, because I pay 0,55€ for fast charging, and ABRP suggests that I have way lower charging costs than I really have.