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EXHIBIT 21.01 -- SUBSIDIARIES OF XCEL ENERGY INC.
STATE OF
SUBSIDIARY (A) INCORPORATION PURPOSE
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Northern States Power Co. (a Minnesota corporation) Minnesota Electric and gas utility
Northern States Power Co. (a Wisconsin corporation) Wisconsin Electric and gas utility
Public Service Co. of Colorado Colorado Electric and gas utility
Southwestern Public Service Co. New Mexico Electric utility
Cheyenne Light, Fuel and Power Co. (b) Wyoming Electric and gas utility
WestGas InterState Inc. Colorado Natural gas transmission
Xcel Energy Wholesale Group Inc. Minnesota Holding company providing
wholesale energy
Utility Engineering Corp. Texas Engineering, design and
construction
Xcel Energy Markets Holdings Inc. Minnesota Holding company providing energy
marketing
e prime inc Colorado Natural gas marketing and trading
Xcel Energy International Inc. Delaware Holding company with
international holdings
Xcel Energy Ventures Inc. Minnesota Holding company to develop new
businesses
Eloigne Co. Minnesota Owns and operates affordable
housing units
Xcel Energy Retail Holdings Inc. Minnesota Holding company providing retail
services
Planergy International Inc. Texas Energy management, consulting,
and demand-side management
services
Xcel Energy Communications Group Inc. Minnesota Holding company providing
telecommunications
Seren Innovations, Inc. Minnesota Communications and data services
Xcel Energy WYCO Inc. Minnesota Holding company holding
investment in WYCO
Xcel Energy O&M Services Inc. Minnesota Holding company
Xcel Energy Services Inc. Minnesota Holding company
Xcel Energy Foundation Minnesota Charitable foundation
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(a) Certain insignificant subsidiaries are omitted.
(b) In January 2004 Xcel Energy entered into an agreement to sell Cheyenne.