What is Regulated Asset Base (RAB)
Western Power is regulated by the state government in terms of how it can earn revenue. Our revenue (through tariffs) is determined by the size of our Regulated Asset Base (RAB).
When streetlights are added to the RAB they have an economic life of 20 years. If a streetlight is replaced or upgraded to LED when it is younger than 20 years old, there’s still some value in there that we haven’t recovered back yet.