Certification
by the Chief Executive Officer


Pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002


I,
Don Klapko, certify that:


1. I
have reviewed this annual report on Form 20-F of Enterra Energy Trust (the
“Trust”);


2. Based
on my knowledge, this report does not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements made, in
light of the circumstances under which such statements were made, not misleading
with respect to the period covered by this report;


3. Based
on my knowledge, the financial statements, and other financial information
included in this report, fairly present in all material respects the financial
condition, results of operations and cash flows of the Trust as of, and for, the
periods presented in this report;


4. The
Trust’s other certifying officer(s) and I are responsible for establishing and
maintaining disclosure controls and procedures (as defined in Exchange Act
Rules 13a-15(e) and 15d-15(e)) and internal control over financial
reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the
Trust and have:


(a)      Designed
such disclosure controls and procedures, or caused such disclosure controls and
procedures to be designed under our supervision, to ensure that material
information relating to the Trust, including its consolidated subsidiaries, is
made known to us by others within those entities, particularly during the period
in which this report is being prepared;


(b)      Designed
such internal control over financial reporting, or caused such internal control
over financial reporting to be designed under our supervision, to provide
reasonable assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with
generally accepted accounting principles;


(c)      Evaluated
the effectiveness of the Trust’s disclosure controls and procedures and
presented in this report our conclusions about the effectiveness of the
disclosure controls and procedures, as of the end of the period covered by this
report based on such evaluation; and


(d)      Disclosed
in this report any change in the Trust’s internal control over financial
reporting that occurred during the period covered by this annual report that has
materially affected, or is reasonably likely to materially affect, the Trust’s
internal control over financial reporting; and


5. The
Trust’s other certifying officer(s) and I have disclosed, based on our most
recent evaluation of internal control over financial reporting, to the Trust’s
auditors and the audit committee of Trust’s board of directors (or persons
performing the equivalent function):


(a)      All
significant deficiencies and material weaknesses in the design or operation of
internal control over financial reporting which are reasonably likely to
adversely affect the Trust’s ability to record, process, summarize and report
financial information; and


(b)      Any
fraud, whether or not material, that involves management or other employees who
have a significant role in the Trust’s internal control over financial
reporting.


Date:
June 22, 2009


By:
            /s/
      Don KlapkoName:
            Don
      KlapkoTitle:
            Chief
      Executive Officer