BEFORE THE WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION

WASHINGTON UTILITIES AND  ) 
TRANSPORTATION COMMISSION ) DOCKET UG-991607
      )
Complainant,     )  
      ) 
vs.      ) COMPLAINT AND ORDER 
      ) SUSPENDING TARIFF
AVISTA CORPORATION   ) REVISIONS
      )
   Respondent.  )
  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . )
     
  On October 22, 1999, Avista Corporation filed with the Commission revisions 
to its currently effective Tariff WN U-29 designated as:

 First Revision Sheet 101  Canceling Original Sheet 101
 First Revision Sheet 111  Canceling Original Sheet 111
 First Revision Sheet 112  Canceling Original Sheet 112
 First Revision Sheet 121  Canceling Original Sheet 121
 First Revision Sheet 121A  Canceling Original Sheet 121A
 First Revision Sheet 122  Canceling Original Sheet 122
 First Revision Sheet 122A  Canceling Original Sheet 122A
 First Revision Sheet 131  Canceling Original Sheet 131
 First Revision Sheet 131A  Canceling Original Sheet 131A
 First Revision Sheet 132  Canceling Original Sheet 132
 First Revision Sheet 132A  Canceling Original Sheet 132A
 First Revision Sheet 146  Canceling Original Sheet 146
 First Revision Sheet 146A  Canceling Original Sheet 146A
 First Revision Sheet 146B  Canceling Original Sheet 146B
 Original Sheet 146C    
 First Revision Sheet 148A  Canceling Original Sheet 148A
 First Revision Sheet 148B  Canceling Original Sheet 148B
 Original Sheet 148C  
 Third Revision Sheet 150  Canceling Second Revision Sheet 150
 Second Revision Sheet 150A Canceling First Sheet 150A

The stated effective date of the tariff revisions is January 1, 2000.

  It appears that the proposed tariff revisions will result in an increase in 
the charges and rates for natural gas service rendered by Respondent, and that 
the rights and interests of the public might be injuriously affected.  It is 
the decision of the Commission to suspend the operation of the proposed tariff 
revisions.  The Commission will initiate such hearings as are necessary and 
appropriate concerning the proposed tariff revisions and investigate whether 
the proposed rates and changes are just and reasonable.

  In accordance with RCW 80.04.130, the burden of proof to show that such 
increases are just and reasonable shall be upon the respondent.  Pursuant to 
RCW 80.20.020, Avista Corporation shall bear the cost of this investigation.

ORDER

  1.  The operation of the above-named tariff revisions, filed October 22, 
1999, is suspended.

  2.  A hearing or hearings, on the Commission’s own motion, shall be held at 
such times and places as may be required.

  3.  No change or alteration shall be made in the filed tariff revisions 
during the period of suspension without prior written authorization of the 
Commission.
  
  4.  As provided in RCW 80.20.020, Avista Corporation shall bear the cost of 
this investigation.

  Dated at Olympia, Washington, and effective this 30th day of November, 1999.

 WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION



     MARILYN SHOWALTER, Chairwoman



     WILLIAM R. GILLIS, Commissioner