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Customer Numbers

Electricity Customers (as of year-end 2013)
  Residential Large Commercial & Industrial Small Commercial & Industrial Public Authority & Other Wholesale Total
NSPM 1,263,575 483 152,769 6,869 12 1,423,708
NSPW 213,665 107 38,549 1,149 0 253,470
PSCo 1,187,308 328 155,643 53,724 23 1,397,026
SPS 301,169 214 75,592 6,256 30 383,261
Total 2,965,717 1,132 422,553 67,998 65 3,457,465
Natural Gas Customers (as of year-end 2013)
  Residential Commercial & Industrial Transportation & Other Total
NSPM 450,958 41,929 24 492,911
NSPW 96,974 12,646 23 109,643
PSCo 1,228,917 100,071 6,273 1,335,261
Total 1,776,849 154,646 6,320 1,937,815