https://w3id.org/saref4ener#valueSource
Property s4ener:valueSource

owl:DatatypeProperty

Indicates the source (origin/foundation) of the measurement forecasted values for a power sequence. If absent, the source is undefined. Remark: This element shall express the reliability of the forecast.

value source

{"s4ener:measuredValue" , "s4ener:calculatedValue" , "s4ener:empiricalValue"}