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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
SCHEDULE II
PNM RESOURCES, INC. AND SUBSIDIARIES
VALUATION AND QUALIFYING ACCOUNTS
 
   AdditionsDeductions 
DescriptionBalance at
beginning of
year		Charged to
costs and
expenses		Charged to
other
accounts		Write-offs and otherBalance at
end of year
   (In thousands) 
Allowance for doubtful accounts, year ended December 31:
2018$1,081 $3,360 $— $3,035 $1,406 
2019$1,406 $2,835 $— $3,078 $1,163 
2020$1,163 $3,527 $6,070 $2,427 $8,333 
SCHEDULE II
PUBLIC SERVICE COMPANY OF NEW MEXICO AND SUBSIDIARY
A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.
VALUATION AND QUALIFYING ACCOUNTS
 
   AdditionsDeductions 
DescriptionBalance at
beginning of
year		Charged to
costs and
expenses		Charged to
other
accounts		Write-offs and otherBalance at
end of year
   (In thousands) 
Allowance for doubtful accounts, year ended December 31:
2018$1,081 $3,338 $— $3,013 $1,406 
2019$1,406 $2,790 $— $3,033 $1,163 
2020$1,163 $3,482 $6,070 $2,382 $8,333 
 
SCHEDULE II
TEXAS-NEW MEXICO POWER COMPANY AND SUBSIDIARIES
A WHOLLY-OWNED SUBSIDIARY OF PNM RESOURCES, INC.
VALUATION AND QUALIFYING ACCOUNTS
 
  AdditionsDeductions 
DescriptionBalance at
beginning of
year		Charged to
costs and
expenses		Charged to
other
accounts		Write-offs and otherBalance at
end of year
  (In thousands) 
Allowance for doubtful accounts, year ended December 31:
2018$— $22 $— $22 $— 
2019$— $44 $— $44 $— 
2020$— $45 $— $45 $—