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<TITLE>Form 8-K</TITLE>
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<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>

<P align="center" style="font-size: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P align="center" style="font-size: 10pt"><B>Date of Report (Date of earliest event reported): April 13, 2009</B>





<P align="center">

<P align="center" style="font-size: 24pt"><B>UNISOURCE ENERGY CORPORATION</B><BR>
<FONT style="font-size: 10pt">(Exact name of registrant as specified in its charter)
</FONT>

<TABLE border="0" width="100%" cellspacing="0" cellpadding="0" style="font-size: 10pt; text-align: center">
<TR>
    <TD width="32%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="33%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="32%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD style="border-bottom: 1px solid #000000"><B>(An Arizona Corporation)</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>1-13739</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>86-0786732</B></TD>
</TR>
<TR valign="top">
    <TD>(State or other Jurisdiction of Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD>(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>(IRS Employer Identification No.)</TD>
</TR>
</TABLE>

<TABLE border="0" width="100%" cellspacing="0" cellpadding="0" style="font-size: 10pt; text-align: center">
<TR>
    <TD width="49%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="49%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD style="border-bottom: 1px solid #000000"><B>One South Church Avenue, Suite 100<BR>Tucson, AZ</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>85701</B></TD>
</TR>
<TR valign="top">
    <TD>(Address of Principal Executive Offices)</TD>
    <TD>&nbsp;</TD>
    <TD>(Zip Code)</TD>
</TR>
</TABLE>

<P align="center" style="font-size: 10pt">Registrant&#146;s telephone number, including area code: <B>(520) 571-4000</B>


<TABLE border="0" width="30%" cellspacing="0" cellpadding="0" style="font-size: 10pt; text-align: center">
<TR>
    <TD width="100%">&nbsp;</TD>
</TR>
<TR>
    <TD nowrap style="border-bottom: 1px solid #000000"><B>&nbsp;</B></TD>
</TR>
<TR>
    <TD nowrap>(Former name or former address if changed since last report.)</TD>
</TR>
</TABLE>







<P align="center">

<P align="center" style="font-size: 24pt"><B>TUCSON ELECTRIC POWER COMPANY</B><BR>
<FONT style="font-size: 10pt">(Exact name of registrant as specified in its charter)
</FONT>

<TABLE border="0" width="100%" cellspacing="0" cellpadding="0" style="font-size: 10pt; text-align: center">
<TR>
    <TD width="32%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="33%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="32%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD style="border-bottom: 1px solid #000000"><B>(An Arizona Corporation)</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>1-5924  </B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>86-0062700</B></TD>
</TR>
<TR valign="top">
    <TD>(State or other Jurisdiction of Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD>(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>(IRS Employer Identification No.)</TD>
</TR>
</TABLE>

<TABLE border="0" width="100%" cellspacing="0" cellpadding="0" style="font-size: 10pt; text-align: center">
<TR>
    <TD width="49%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="49%">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD style="border-bottom: 1px solid #000000"><B>One South Church Avenue, Suite 100<BR>Tucson, AZ</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>85701</B></TD>
</TR>
<TR valign="top">
    <TD>(Address of Principal Executive Offices)</TD>
    <TD>&nbsp;</TD>
    <TD>(Zip Code)</TD>
</TR>
</TABLE>

<P align="center" style="font-size: 10pt">Registrant&#146;s telephone number, including area code: <B>(520) 571-4000</B>


<TABLE border="0" width="30%" cellspacing="0" cellpadding="0" style="font-size: 10pt; text-align: center">
<TR>
    <TD width="100%">&nbsp;</TD>
</TR>
<TR>
    <TD nowrap style="border-bottom: 1px solid #000000"><B>&nbsp;</B></TD>
</TR>
<TR>
    <TD nowrap>(Former name or former address if changed since last report.)</TD>
</TR>
</TABLE>





<P align="left" style="font-size: 10pt">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant
under any of the following provisions:

<P align="left" style="font-size: 10pt">
<FONT face="Wingdings">&#111;</FONT> Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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<P align="center" style="font-size: 10pt; display: none">1
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<DIV align="left" style="font-size: 10pt; margin-top: 10pt"><U><B>Item&nbsp;7.01 Regulation&nbsp;FD Disclosure</B></U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt">UniSource Energy Corporation is making presentations to investors and analysts from April&nbsp;13 &#151;
April&nbsp;16, 2009. UniSource Energy made the same presentation to investors and analysts on March&nbsp;24,
2009 and furnished that presentation with the Securities and Exchange Commission in an 8-K dated
March&nbsp;23, 2009. The presentation will be available at <u>http://ir.uns.com/presentations.cfm</u>,
beginning on April&nbsp;13, 2009. The presentation is attached hereto as Exhibit&nbsp;99.1.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 10pt"><U><B>Item&nbsp;9.01 Financial Statements and Exhibits</B></U>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">Exhibit&nbsp;99.1 UniSource Energy Corporation Presentation to Investors and Analysts dated
April&nbsp;13 &#151; April&nbsp;16, 2009.
</DIV>
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<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
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<DIV align="center" style="font-size: 10pt; margin-top: 10pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">Pursuant to the requirements of the Securities
Exchange Act of 1934, each registrant has duly
caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
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    <TD width="1%">&nbsp;</TD>
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    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">Date: April 13, 2009          &nbsp;</TD>
    <TD colspan="3" align="left"><u><b>UNISOURCE ENERGY CORPORATION</b></u><BR>
(Registrant)<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/   Kevin P. Larson
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Senior Vice President and Principal&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Financial Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">Date: April 13, 2009      &nbsp;</TD>
    <TD colspan="3" align="left"><u><b>TUCSON ELECTRIC POWER COMPANY</b></u><BR>
(Registrant)<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/   Kevin P. Larson
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Senior Vice President and Principal&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Financial Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


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<DIV align="center" style="font-size: 10pt; margin-top: 10pt"><B>EXHIBIT INDEX</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head --><TR valign="bottom">
    <TD width="8%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit No.</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
</TR>

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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Exhibit&nbsp;99.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">UniSource Energy Corporation Presentation to Investors and Analysts dated April&nbsp;13 &#151; April&nbsp;16, 2009.</TD>
</TR>
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Form 8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): April 13, 2009
UNISOURCE ENERGY CORPORATION
(Exact name of registrant as specified in its charter)
(An Arizona Corporation)
1-13739
86-0786732
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
One South Church Avenue, Suite 100
Tucson, AZ
85701
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code:
(520) 571-4000
(Former name or former address if changed since last report.)
TUCSON ELECTRIC POWER COMPANY
(Exact name of registrant as specified in its charter)
(An Arizona Corporation)
1-5924
86-0062700
(State or other Jurisdiction of Incorporation)
(Commission File Number)
(IRS Employer Identification No.)
One South Church Avenue, Suite 100
Tucson, AZ
85701
(Address of Principal Executive Offices)
(Zip Code)
Registrant's telephone number, including area code:
(520) 571-4000
(Former name or former address if changed since last report.)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant
under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 7.01 Regulation FD Disclosure
UniSource Energy Corporation is making presentations to investors and analysts from April 13 —
April 16, 2009. UniSource Energy made the same presentation to investors and analysts on March 24,
2009 and furnished that presentation with the Securities and Exchange Commission in an 8-K dated
March 23, 2009. The presentation will be available at
http://ir.uns.com/presentations.cfm
,
beginning on April 13, 2009. The presentation is attached hereto as Exhibit 99.1.
Item 9.01 Financial Statements and Exhibits
Exhibit 99.1 UniSource Energy Corporation Presentation to Investors and Analysts dated
April 13 — April 16, 2009.
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, each registrant has duly
caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.
Date: April 13, 2009
UNISOURCE ENERGY CORPORATION
(Registrant)
/s/   Kevin P. Larson
Senior Vice President and Principal
Financial Officer
Date: April 13, 2009
TUCSON ELECTRIC POWER COMPANY
(Registrant)
/s/   Kevin P. Larson
Senior Vice President and Principal
Financial Officer
EXHIBIT INDEX
Exhibit No.
Description
Exhibit 99.1
UniSource Energy Corporation Presentation to Investors and Analysts dated April 13 — April 16, 2009.