SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 13a-16 or 15d-16 of the

Securities Exchange Act of 1934

For the month of June, 2010

Commission File Number 1-14668

COMPANHIA PARANAENSE DE ENERGIA

(Exact name of registrant as specified in its charter)

Energy Company of Paraná

(Translation of Registrant's name into English)

Rua Coronel Dulcídio, 800
80420-170 Curitiba, Paraná
Federative Republic of Brazil
(5541) 3222-2027

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.  Form 20-F ___X___ Form 40-F _______

 Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.  

Yes _______ No ___X____

IR COPEL 10/10 - 06/30/2010

NOTICE TO THE MARKET

     The management of Companhia Paranaense de Energia - COPEL (NYSE: ELP; LATIBEX: XCOP; and BM&FBOVESPA: CPLE3, CPLE5, CPLE6) announces that on June 30, 2010, Copel filed its Annual Report on Form 20-F for the fiscal year ended December 31, 2009 (the 2009 Annual Report ) with the U.S. Securities and Exchange Commission (the SEC ). The 2009 Annual Report can be accessed by visiting either the SEC s website at www.sec.gov or Copel s website at www.copel.com/ir.

     In addition, shareholders may receive a hard copy of Copel s complete financial statements free of charge by requesting a copy within a reasonable period of time from Copel s Investor Relations Department at +(55 41) 3222-2027 or email: ri@copel.com.

Curitiba, June 30, 2010.

Sincerely,

Rafael Iatauro

CFO and Investor Relations Officer

For additional information, please contact Copel's Investor Relations team:
ri@copel.com or (55-41) 3222-2027

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: June 30, 2010

COMPANHIA PARANAENSE DE ENERGIA – COPEL
By:	/S/  Ronald Thadeu Ravedutti
	Ronald Thadeu Ravedutti CEO

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates of future economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will actually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.