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<table style="font-size:10pt; font-family:'Times New Roman',times,serif;">
<tr>
<td>
<p style="FONT-FAMILY: times"><font size="3"><b>Fair Value of
Financial Instruments<br /></b></font></p>
<p style="FONT-FAMILY: times"><font size="2">We show the carrying
amounts and fair values of financial instruments included in our
Consolidated Balance Sheets in the following table:</font></p>
<div style="PADDING-RIGHT: 0pt; PADDING-LEFT: 0pt; PADDING-BOTTOM: 0pt; MARGIN-LEFT: 10%; WIDTH: 80%; PADDING-TOP: 0pt; POSITION: relative">
<p style="FONT-FAMILY: times"><font size="2">
<!-- COMMAND=ADD_TABLEWIDTH,"100%" --></font></p>
<!-- User-specified TAGGED TABLE -->
<div align="center">
<table cellspacing="0" cellpadding="0" width="100%" border="0">
<tr style="HEIGHT: 0px"><!-- TABLE COLUMN WIDTHS SET -->
<td style="FONT-FAMILY: times" align="left" width="10"></td>
<td style="FONT-FAMILY: times" align="left"></td>
<td style="FONT-FAMILY: times" width="12"></td>
<td style="FONT-FAMILY: times" align="right" width="6"></td>
<td style="FONT-FAMILY: times" width="46"></td>
<td style="FONT-FAMILY: times" width="12"></td>
<td style="FONT-FAMILY: times" align="right" width="6"></td>
<td style="FONT-FAMILY: times" width="46"></td>
<td style="FONT-FAMILY: times" width="12"></td>
<!-- TABLE COLUMN WIDTHS END --></tr>
<tr style="HEIGHT: 0px" valign="bottom">
<th style="FONT-FAMILY: times" align="left" colspan="2">
<font size="2"><i>At September 30, 2009</i></font><br /></th>
<th style="FONT-FAMILY: times"><font size="2"> </font></th>
<th style="FONT-FAMILY: times" align="center" colspan="2">
<font size="2"><i>Carrying<br />
Amount</i></font><br /></th>
<th style="FONT-FAMILY: times"><font size="2"> </font></th>
<th style="FONT-FAMILY: times" align="center" colspan="2">
<font size="2"><i>Fair<br />
Value</i></font><br /></th>
<th style="FONT-FAMILY: times">
<font size="2"> </font></th></tr>
<tr style="FONT-SIZE: 1.5pt; HEIGHT: 0px" valign="bottom">
<th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: times"
align="center" colspan="8"> </th>
<th style="FONT-FAMILY: times"> </th></tr>
<tr style="HEIGHT: 0px" valign="bottom">
<th style="FONT-FAMILY: times" align="left" colspan="2">
<font size="2"> </font><br /></th>
<th style="FONT-FAMILY: times"><font size="2"> </font></th>
<th style="FONT-FAMILY: times" align="center" colspan="5">
<font size="2"><i>(In millions)</i></font><br /></th>
<th style="FONT-FAMILY: times">
<font size="2"> </font></th></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="#CCEEFF">
<td style="FONT-FAMILY: times" colspan="2">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">Investments and other assets—Constellation
Energy</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"><b>$</b></font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>1,393.5</b></font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"><b>$</b></font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>1,392.1</b></font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="white">
<td style="FONT-FAMILY: times" colspan="2">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">Fixed-rate long-term debt:</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="#CCEEFF">
<td style="FONT-FAMILY: times"><font size="0"> </font></td>
<td style="FONT-FAMILY: times">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">Constellation Energy (including BGE)</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>5,481.4</b></font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>5,678.1</b></font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="white">
<td style="FONT-FAMILY: times"><font size="0"> </font></td>
<td style="FONT-FAMILY: times">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">BGE</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>2,238.5</b></font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>2,320.7</b></font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="#CCEEFF">
<td style="FONT-FAMILY: times" colspan="2">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">Variable-rate long-term debt:</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="white">
<td style="FONT-FAMILY: times"><font size="0"> </font></td>
<td style="FONT-FAMILY: times">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">Constellation Energy (including BGE)</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>695.9</b></font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>695.9</b></font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr>
<tr style="HEIGHT: 0px" valign="bottom" bgcolor="#CCEEFF">
<td style="FONT-FAMILY: times"><font size="0"> </font></td>
<td style="FONT-FAMILY: times">
<p style="MARGIN-LEFT: 10pt; TEXT-INDENT: -10pt; FONT-FAMILY: times">
<font size="2">BGE</font></p></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>—</b></font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times"><font size="2"> </font></td>
<td style="FONT-FAMILY: times" align="right">
<font size="2"><b>—</b></font></td>
<td style="FONT-FAMILY: times">
<font size="2"> </font></td></tr></table></div>
<!-- end of user-specified TAGGED TABLE --></div>
<p style="FONT-FAMILY: times">
<font size="2"> We
use the following methods and assumptions for estimating fair value
disclosures for financial instruments:</font></p>
<ul>
<li style="list-style: none">
<dl compact="compact">
<dt style="MARGIN-BOTTOM: -11pt; FONT-FAMILY: times">
<font size="2">•</font></dt>
<dd style="FONT-FAMILY: times"><font size="2">cash and cash
equivalents, net accounts receivable, other current assets, certain
current liabilities, short-term borrowings, current portion of
long-term debt, and certain deferred credits and other liabilities:
because of their short-term nature, the amounts reported in our
Consolidated Balance Sheets approximate fair value,</font></dd>
<dt style="MARGIN-BOTTOM: -11pt; FONT-FAMILY: times">
<font size="2">•</font></dt>
<dd style="FONT-FAMILY: times"><font size="2">investments and other
assets: the fair value is based on quoted market prices where
available, and</font></dd>
<dt style="MARGIN-BOTTOM: -11pt; FONT-FAMILY: times">
<font size="2">•</font></dt>
<dd style="FONT-FAMILY: times"><font size="2">long-term debt: the
fair value is based on quoted market prices where available or by
discounting remaining cash flows at current market
rates.</font></dd></dl></li></ul></td></tr></table>
Fair Value of
Financial Instruments
We show the carrying
amounts and fair values of financial instruments included in our
Consolidated Balance Sheets in the
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