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<title>Prepared By R.R. Donnelley Financial -- Form 8-K</title>
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<b>UNITED STATES </b></font>
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<b>SECURITIES AND EXCHANGE COMMISSION </b></font></div>

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<b>Washington D.C., 20549 </b></font></div>

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<b>Form 8-K </b></font></div> <div><font Size="1">&nbsp;</font></div>

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<b>Current Report </b></font></div>

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<b>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 </b></font></div>

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<b>Date Of Report (Date Of Earliest Event Reported):&nbsp;&nbsp;05/10/2004 </b></font></div>

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<b>KFX INC </b></font></div>

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<b>(Exact Name of Registrant as Specified in its Charter)</b></font></div>

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<b>Commission File Number:&nbsp;&nbsp;0-23634        </b></font></div>

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<div Align="center"><font Face="times New Roman" Size="3" Color="#000000"><b>DE</b></font>
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<b>(State or Other Jurisdiction of</b></font>
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<div Align="center"><font Face="times New Roman" Size="2" Color="#000000"><b>(I.R.S. Employer</b></font>
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<b>Incorporation or Organization)</b></font>
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<b>Identification No.)</b></font>
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<b>55 Madison Street Suite 745 </b></font></div>

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<b>Denver, CO 80206 </b></font>
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<b>(Address of Principal Executive Offices, Including Zip Code)</b></font>
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<b>303.293.2992 </b></font>
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<b>(Registrant&#146;s Telephone Number, Including Area Code) </b></font>
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Items to be Included in this Report</b>
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<b>Item 7.&nbsp;&nbsp;&nbsp;&nbsp;Financial statements and exhibits</b></font>
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(a) Not applicable.<p>(b) Not applicable.<p>(c) Exhibit 99.1 - Press Release dated May 10, 2004</font>
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<b>Item 12.&nbsp;&nbsp;&nbsp;&nbsp;Results of Operations and Financial Condition</b></font>
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On March 10, 2004, KFx Inc. issued a press release regarding its financial results for its first quarter ended March 31, 2004.  A copy of this press release is attached as Exhibit 99.1.</font>
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<b>Signature(s) </b></font>
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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 hereunto
duly authorized. </font>
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	&nbsp;&nbsp;&nbsp;&nbsp;KFX INC</font>
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	Date: May 11, 2004.</font>
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	By:</font>
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	/s/&nbsp;&nbsp;&nbsp;&nbsp;Matthew V. Elledge</font>
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	&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Matthew V. Elledge</font>
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	<div Style="margin-left:9%"><font Face="times New Roman" Size="2" Color="#000000">Vice President and CFO</font>
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<b>Exhibit Index </b></font>
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	<b>Exhibit&nbsp;No.</b></font>
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	<b>Description</b></font>
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	EX-99.1</font>
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	Press release dated May 10, 2004</font>
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Prepared By R.R. Donnelley Financial -- 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):  05/10/2004
KFX INC
(Exact Name of Registrant as Specified in its Charter)
Commission File Number:  0-23634
DE
84-1079971
(State or Other Jurisdiction of
(I.R.S. Employer
Incorporation or Organization)
Identification No.)
55 Madison Street Suite 745
Denver, CO 80206
(Address of Principal Executive Offices, Including Zip Code)
303.293.2992
(Registrant's Telephone Number, Including Area Code)
Items to be Included in this Report
Item 7.    Financial statements and exhibits
(a) Not applicable.
(b) Not applicable.
(c) Exhibit 99.1 - Press Release dated May 10, 2004
Item 12.    Results of Operations and Financial Condition
On March 10, 2004, KFx Inc. issued a press release regarding its financial results for its first quarter ended March 31, 2004.  A copy of this press release is attached as Exhibit 99.1.
Signature(s)
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 hereunto
duly authorized.
KFX INC
Date: May 11, 2004.
By:
/s/    Matthew V. Elledge
Matthew V. Elledge
Vice President and CFO
Exhibit Index
Exhibit No.
Description
EX-99.1
Press release dated May 10, 2004