WEC ENERGY GROUP, INC. — Director's Dealing 2011

May 17, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: WISCONSIN ENERGY CORP (WEC)
CIK: 0000783325
Period of Report: 2011-05-13

Reporting Person: KLAPPA GALE E (Director, Chairman, President, and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-13	Common Stock	M	50000	$16.7175	Acquired	149705.3722	Direct
2011-05-13	Common Stock	S	50000	$31.81	Disposed	99705.3722	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-13	Stock Option (right to buy)	$16.7175	M	50000	Disposed	2014-01-02	Common Stock (50000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2775.671	Indirect

Footnotes

F1: Includes shares acquired pursuant to a dividend reinvestment feature of Wisconsin Energy Corporation's Stock Plus Investment Plan in transactions exempt from Section 16 pursuant to Rule 16a-11.

F2: Includes shares acquired under Wisconsin Energy Corporation's Employee Retirement Savings Plan (ERSP) in transactions exempt from Section 16(b) pursuant to Rule 16b-3(c) and exempt from reporting pursuant to Rule 16a-3(f)(1)(i)(B). The number of shares in the ERSP attributable to any one participant varies with the price of the Common Stock. The information in this report is based on a plan statement dated as of April 30, 2011.

F3: By action of the Compensation Committee on December 28, 2004, all options granted to employees of the Issuer, including the reporting person, in 2002, 2003 and 2004, and not otherwise exercisable, became exercisable as of December 31, 2004.