LIMITED POWER OF ATTORNEY
FOR
SOUTHWESTERN ENERGY COMPANY
SECTION 16(a) FILINGS
KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints each of KATHY HARRIELL, MELISSA D. MCCARTY, FREDERICK C. OGLE and/or
their substitutes, signing singly, the undersigned's true and lawful attorney-
in-fact to:
(1) Execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer, director and/or stockholder of Southwestern Energy
Company (the "Company"), Forms 3, 4 and 5 and amendments thereto in accordance
with Section 16(a) of the Securities Exchange Act of 1934 and the rules
thereunder;
(2) Do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete and execute any such Form 3, 4 or 5,
or amendment thereto, and timely file such form with the United States
Securities and Exchange Commission (the "SEC") and any stock exchange or
similar authority; and
(3) Take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit
to, in the best interest of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such terms and conditions as such attorney-in-fact may approve
in such attorney-in-fact's discretion.
The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and
powers herein granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such attorney-in-fact, or
such attorney-in-fact's substitute or substitutes, shall lawfully do or cause
to be done by virtue of this power of attorney and the rights and powers
herein granted.  The undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the undersigned, are not
assuming, nor is the Company assuming, any of the undersigned's
responsibilities to comply with Section 16 of the Securities Exchange Act of
1934.
This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 15th day of October 2008.
/s/ Jeffrey B. Sherrick
Signature
Jeffrey B. Sherrick
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