KiOR Achieves Operational Milestones at Columbus Facility

KiOR Achieves Operational Milestones at Columbus Facility

                  BFCC Unit Marks 30 Day Continuous Run Time

                  First Shipment of Cellulosic Gasoline Made

         Regular Shipments of Cellulosic Diesel and Gasoline Underway

PASADENA, Texas, July 1, 2013 (GLOBE NEWSWIRE) -- KiOR, Inc. (Nasdaq:KiOR),
announced today that its commercial scale cellulosic gasoline and diesel
production facility in Columbus, Mississippi has achieved several key
operational milestones.

First, the Columbus facility's Biomass Fluid Catalytic Cracking, or BFCC, unit
has completed its first uninterrupted 30-day run. Second, the facility made
its first shipment of cellulosic gasoline on June 28, which represented the
first fuel shipment since March, 2013. Lastly, the facility commenced regular
shipments of both gasoline and diesel that same day.

"Commencing regular shipments of gasoline and diesel is very significant for
KiOR, as it reflects the continuous improvements in our operations at the
Columbus facility," said Fred Cannon, KiOR's President and CEO. "We have been
undertaking considerable reliability and optimization efforts in areas of the
facility unrelated to KiOR's core technology. The success of these efforts
gives us confidence, more than ever, that the performance targets for the
Columbus plant are attainable in the months ahead and that our operating
assumptions for our next, larger Natchez plant are reasonable."

"With the facility operating stably and producing cellulosic gasoline and
diesel at commercial scale, we believe we are on track to achieve steady-state
operations before the end of the calendar year and to demonstrate improving
performance metrics over that timeframe," Cannon continued. "The largest
commercially producing cellulosic production facility in the world, we expect
Columbus – enhanced with our recent optimizations – to be the basis of our
second facility's design at Natchez."

About KiOR

KiOR, a global leader in cellulosic gasoline and diesel transportation fuels,
has developed a unique proprietary technology platform to convert abundant and
sustainable non-food biomass into fuels for use in vehicles on the road today.
KiOR's cellulosic fuels, which may be transported using existing distribution
networks, help ease dependence on foreign oil, reduce lifecycle greenhouse gas
emissions and create high-quality jobs and economic benefit across rural
communities.

KiOR's shares are traded on NASDAQ under the symbol "KiOR." For more
information, please visit www.KiOR.com.

Forward-Looking Statements

This release contains "forward looking" statements within the meaning of the
Private Securities Litigation Reform Act of 1995 and Section 21E of the
Securities Exchange Act of 1934, as amended, regarding future results and
events, including, without limitation, statements about: our ability to
produce cellulosic hydrocarbon fuel on a commercial scale; the scalability of
our technology; the expected output of our production facilities; and our
anticipated future technology developments and operations. For this purpose,
any statements contained herein that are not statements of historical fact may
be deemed forward looking statements. Without limiting the foregoing, the
words "believes," "anticipates," "plans," "expects," intends," "appears,"
"estimates," "projects," "would," "could," "should," "targets," and similar
expressions are also intended to identify forward looking statements. The
forward looking statements in this press release involve a number of important
risks and uncertainties, which could cause our actual future results to differ
significantly from the results discussed in the forward looking statements
contained in this press release. Such factors include our ability to raise the
additional capital we need in order to expand our business and begin
construction on our Natchez facility; the sufficiency of our cash to meet our
liquidity needs; the ability of our Columbus facility to produce cellulosic
hydrocarbon fuel on time, on a continuous and cost-efficient basis and at
expected yields; our ability to continuously operate our facilities without
delay or shutdowns; our ability to successfully commercialize our cellulosic
gasoline, diesel and fuel oil; our ability to effectively scale our
proprietary technology platform and process design; the cost of constructing,
operating and maintaining facilities necessary to produce our cellulosic
gasoline, diesel and fuel oil in commercial volumes; the ability of our
initial-scale commercial production facility, in which we are in the start-up
phase, to satisfy the technical, commercial and production requirements under
offtake agreements relating to the sale of cellulosic gasoline, diesel and
fuel oil; market acceptance of our cellulosic gasoline, diesel and fuel oil;
our ability to obtain and maintain intellectual property protection for our
products and processes, and other factors discussed more fully in the section
entitled "Risk Factors" in the Company's Annual Report on Form 10-K as filed
with the United States Securities and Exchange Commission (SEC) on March 18,
2013 and in the Company's other filings with the SEC. The "Risk Factors"
discussion in the filings listed above is incorporated by reference in this
press release. If any of these risks or uncertainties materialize, or if our
underlying assumptions prove to be incorrect, actual results, levels of
activity, performance or achievement may vary significantly from what we have
projected. We specifically disclaim any obligation to update these forward
looking statements in the future. These forward-looking statements should not
be relied upon as representing our estimates or views as of any date
subsequent to the date of this press release.

CONTACT: For investors:
         Max Kricorian, Treasurer
         281-694-8811
         Investor.relations@kior.com
        
         For media:
         Kate Perez, Director, Corporate Communications & Public Relations
         281-694-8831
         Media@kior.com

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