EntsoE Binding [4.0.0.0;4.3.0.0)

You simply need to let UoM do the work for you by defining your item as Number:EnergyPrice and setting the unit to SEK/kWh. See Using the new Currency Units of Measurement in 4.1

Example:

Number:EnergyPrice SpotPrice { channel="entsoe:day-ahead:02b0905d44:spot-price", unit="SEK/kWh" }

or with VAT included:

Number:EnergyPrice SpotPrice { channel="entsoe:day-ahead:02b0905d44:spot-price", unit="SEK/kWh" [profile="transform:VAT"] }