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Before April 1, 2023

 

After April 1, 2023  (Note:  COPA rate is not yet determined.  COPA rate in the calculation is the current rate for comparison.)

 

Key

  1.  Cost of Power Adjustment
  2.  Washington State Effective Tax Rate    
    ( Effective Tax Rate)
  3.  1000 Minimum Demand
  4.  Demand Charge