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18. Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2018
Property Plant And Equipment  
Property, Plant and Equipment
             
    Accumulated     Accumulated  
  Cost depreciation 12.31.2018 Cost depreciation 12.31.2017
In service            
Reservoirs, dams and aqueducts  6,643,087  (4,216,613)  2,426,474  6,638,348  (4,071,621)  2,566,727
Machinery and equipment  5,648,292  (2,674,150)  2,974,142  5,320,736  (2,654,801)  2,665,935
Buildings  1,500,990  (1,021,783)  479,207  1,500,144  (989,221)  510,923
Land  375,286  (18,184)  357,102  277,665  (15,287)  262,378
Vehicles and aircraft  47,744  (41,978)  5,766  59,101  (48,759)  10,342
Furniture and tools  22,057  (12,642)  9,415  16,990  (11,476)  5,514
(-) Provision for impairment (18.7)  (3,489)  -  (3,489)  (4,986)  -  (4,986)
(-) Special Obligations  (68)  27  (41)  (56)  18  (38)
   14,233,899  (7,985,323)  6,248,576  13,807,942  (7,791,147)  6,016,795
             
In progress            
Cost  5,789,780  -  5,789,780  5,023,013  -  5,023,013
(-) Provision for impairment (18.7)  (1,197,693)  -  (1,197,693)  (1,210,358)  -  (1,210,358)
   4,592,087  -  4,592,087  3,812,655  -  3,812,655
   18,825,986  (7,985,323)  10,840,663  17,620,597  (7,791,147)  9,829,450
Changes in Property, Plant and Equipment

                 
                 
    Balance as of  Additions/Reversal
 of impairment		   Loss on   Transfers/ Balance as of
    January 1, 2018  Depreciation disposal Capitalizations Reclassifications December 31, 2018
  In service              
  Reservoirs, dams and aqueducts                   2,566,727                                        -             (144,991)                 (1)                       4,739                                  -                        2,426,474
  Machinery and equipment                   2,665,935                                        -             (199,846)        (61,959)                   760,887                     (190,875)                        2,974,142
  Buildings                      510,923                                        -               (35,932)             (500)                       4,716                                  -                           479,207
  Land                      262,378                                        -                 (2,897)               (83)                     97,704                                  -                           357,102
  Vehicles and aircraft                        10,342                                        -                 (4,484)             (392)                          300                                  -                               5,766
  Furniture and tools                          5,514                                        -                 (1,171)               (24)                       5,047                                49                               9,415
  (-) Provision for impairment (18.7)                        (4,986)                                1,497                          -                   -                              -                                  -                              (3,489)
  (-) Special Obligations                             (38)                                        -                          9                   -                          (12)                                  -                                   (41)
                      6,016,795                                1,497             (389,312)        (62,959)                   873,381                     (190,826)                        6,248,576
  In progress              
  Cost                   5,023,013                         1,455,318                          -          (5,491)                 (873,381)                       190,321                        5,789,780
  (-) Provision for impairment (18.7)                 (1,210,358)                              12,665                          -                   -                              -                                  -                       (1,197,693)
                      3,812,655                         1,467,983                          -          (5,491)                 (873,381)                       190,321                        4,592,087
                      9,829,450                         1,469,480             (389,312)        (68,450)                              -                            (505)                      10,840,663

 

               
               
               
    Balance as of  Additions/Reversal
of impairment		   Loss on Transfers/ Balance as of
    January 1, 2017 Depreciation disposal Reclassifications December 31, 2017
  In service            
  Reservoirs, dams and aqueducts              2,683,512                                         -             (144,484)        (2,160)                         29,859                        2,566,727
  Machinery and equipment              2,663,971                                         -             (188,988)      (37,685)                       228,637                        2,665,935
  Buildings                 544,372                                         -               (36,347)           (773)                           3,671                           510,923
  Land                 264,761                                         -                 (2,935)               (3)                              555                           262,378
  Vehicles and aircraft                   15,671                                         -                 (5,492)               (6)                              169                             10,342
  Furniture and tools                     5,782                                         -                    (803)             (12)                              547                               5,514
  (-) Provision for impairment (18.7)                  (77,318)                               72,332                          -                 -                                  -                              (4,986)
  (-) Special Obligations                         (46)                                         -                          8                 -                                  -                                   (38)
                 6,100,705                               72,332             (379,041)      (40,639)                       263,438                        6,016,795
  In progress            
  Cost              3,969,703                          1,318,336                          -      (23,869)                     (241,157)                        5,023,013
  (-) Provision for impairment (18.7)             (1,136,105)                             (74,253)                          -                 -                                  -                       (1,210,358)
                 2,833,598                          1,244,083                          -      (23,869)                     (241,157)                        3,812,655
                 8,934,303                          1,316,415             (379,041)      (64,508)                         22,281                        9,829,450

 
Joint Operations Property, Plant and Equipment
         
  Share Annual average    
Joint operations Copel GeT (%) depreciation rate  (%) 12.31.2018 12.31.2017
In service        
HPP Mauá (Consórcio Energético Cruzeiro do Sul) 51.00    859,917  859,917
(-) Accumulated depreciation   3.43  (176,546)  (147,086)
       683,371  712,831
In progress        
HPP Baixo Iguaçu (18.5.1) 30.00    717,599  640,178
       717,599  640,178
       1,400,970  1,353,009
Impairment balances
           
      Property, Plant and Equipment   Value in use
    Cost Depreciation Impairment
HPP Colíder    2,334,223  (2,497)  (731,265)  1,600,461
Wind power complex Cutia    1,217,079  -  (167,875)  1,049,204
Wind power complex Bento Miguel    823,045  -  (84,621)  738,424
Consórcio Tapajós (a)    14,464  -  (14,464)  -
Power plants in Paraná    961,887  (46,607)  (202,957)  712,323
     5,350,698  (49,104)  (1,201,182)  4,100,412
(a) Project under development          
Impairment of Property, Plant and Equipment
           
  Balance as of Impairment
at the year		 Balance as of Impairment
at the year		 Balance as of
  January 1, 2017 December 31, 2017 December 31, 2018
In service          
UEG Araucária  (69,073)  69,073  -  -  -
Power plants in Paraná  (8,245)  3,259  (4,986)  1,497  (3,489)
   (77,318)  72,332  (4,986)  1,497  (3,489)
In progress          
HPP Colíder (18.7.1)  (595,489)  (87,532)  (683,021)  (48,244)  (731,265)
Wind power complex Cutia (18.7.2)  (232,827)  8,317  (224,510)  56,635  (167,875)
Wind power complex Bento Miguel (18.7.2)  (81,637)  (16,594)  (98,231)  13,610  (84,621)
Consórcio Tapajós  (14,464)  -  (14,464)  -  (14,464)
Power plants in Paraná (18.7.3)  (211,688)  21,556  (190,132)  (9,336)  (199,468)
   (1,136,105)  (74,253)  (1,210,358)  12,665  (1,197,693)
   (1,213,423)  (1,921)  (1,215,344)  14,162  (1,201,182)
Impairment risk
           
Cash generating unit     VR/VC-1 VR/VC-1 Impairment
Risk
Discount rate VR/VC-1 (5% Variation) (10% Variation)
Wind power Assets          
Complex EOL São Bento (a) 7.13% 60.49% 55.82% 51.36% -
Complex EOL Brisa I (b) 7.13% 22.47% 18.97% 15.64% -
Complex EOL Brisa II (c) 7.13% 18.77% 14.74% 10.93% -
Thermal Assets          
UEG Araucária 7.67% 70.74% 67.36% 64.08%  -
Hydric Assets          
Foz do Areia 5.36% 232.59% 230.48% 228.39% -
Segredo 5.36% 168.12% 164.07% 160.11% -
Caxias 5.36% 131.38% 127.72% 124.14% -
Guaricana 5.36% 22.57% 21.25% 19.96% -
Chaminé 5.36% 59.22% 57.54% 55.89% -
Apucaraninha 5.36% 15.44% 14.07% 12.72% -
Chopim I 5.36% 99.24% 95.35% 91.58% -
São Jorge 5.36% 3.22% 2.24% 1.27% -
Melissa 5.36% 23.18% 21.15% 19.20% -
Mauá 5.36% 56.90% 53.26% 49.75% -
Cavernoso II 5.36% 7.60% 4.92% 2.35% -
Elejor 7.00% 66.64% 62.63% 58.78% -
(a) Contemplates the GE Boa Vista, GE Farol, GE Olho D’Água and GE São Bento do Norte wind farms.
(b) Contemplates the Nova Asa Branca I, Nova Asa Branca II, Nova Asa Branca III and Nova Eurus IV wind farms.
(c) Contemplates the Santa Maria, Santa Helena and Ventos de Santo Uriel wind farms.
Average depreciation rates

     
Average rate of depreciation (%)  12.31.2018   12.31.2017  
Generation    
General equipment   6.25   6.33
Machinery and equipment   3.56   3.59
Generators   3.34   3.21
Reservoirs, dams and ducts   2.21   2.11
Hydraulic turbines   2.60   2.61
Gas and steam turbines   2.00   2.30
Water cooling and treatment   4.00   4.00
Gas conditioner   4.00   4.00
Wind power plant unit   3.71   3.85
Central management    
Buildings   3.35   3.33
Machinery and office equipment   6.25   6.25
Furniture and fixtures   6.25   6.25
Vehicles   14.29   14.29
Telecommunications    
Transmission equipment   4.77   6.36
Terminal equipment   9.96  12.09
Infrastructure   10.37   7.45