EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February, 2010.

/s/ Keith E. Bailey                                                              

Keith E. Bailey

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Richard A. Bemis                                                              

Richard A. Bemis

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ William J. Brodsky                                                              

William J. Brodsky

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Albert J. Budney, Jr.                                                              

Albert J. Budney, Jr.

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Pastora San Juan Cafferty                                                              

Pastora San Juan Cafferty

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Ellen Carnahan                                                              

Ellen Carnahan

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Robert C. Gallagher                                                              

Robert C. Gallagher

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Kathryn M. Hasselblad-Pascale                                                                                   

Kathryn M. Hasselblad-Pascale

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ John W. Higgins                                                              

John W. Higgins

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ James L. Kemerling                                                              

James L. Kemerling

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Michael E. Lavin                                                              

Michael E. Lavin

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ William F. Protz, Jr.                                                              

William F. Protz, Jr.

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Charles A. Schrock                                                              

Charles A. Schrock

Director

EXHIBIT 24

POWER OF ATTORNEY

WHEREAS, INTEGRYS ENERGY GROUP, INC., a Wisconsin corporation, will file on or before the due date of March 1, 2010 with the Securities and Exchange Commission, under the provisions of the Securities Exchange Act of 1934, an annual report on Form 10-K, and

WHEREAS, the undersigned is a Director of Integrys Energy Group, Inc.;

NOW, THEREFORE, the undersigned hereby constitutes and appoints Charles A. Schrock, Joseph P. O'Leary, Bradley A. Johnson, Diane L. Ford, and Barth J. Wolf or any one of them, as attorney, with full power to act for the undersigned and in the name, place and stead of the undersigned, to sign the name of the undersigned as Director to said annual report on Form 10-K and any and all amendments to said annual report, hereby ratifying and confirming all that said attorney may or shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this document this   11th     day of   February  , 2010.

/s/ Larry L. Weyers                                                              

Larry L. Weyers

Director