Alberta sends a lot more than a dime GS.
Every province pays into equalization, some more than others. The poorer provinces pay more "per capita" than the wealthier ones but the wealthier pay more overall... way more... because well, they are wealthy. Such is the case for AB. This money is collected by Ottawa and then sent back to the provinces, ie "transfers" to make sure everyone has a consistent level of government service. In reality this is spent on $7 daycare, cheap tuition and to placate Québec.
Alberta developed a million acres of moose pasture into a trillion dollar resource. She employs tens of thousands from all over Canada and the world. Norway doesn't have anywhere close to this number of middle class jobs. North Sea crude is way less labour intensive and therefore much cheaper to develop.
In closing, Alberta has 11.7% of the population but accounts for 16.44% of the countries GDP, very similar to Catalonia and Catalonia's main complaint? You guessed it... equalization.