Hoku Secures TCS Supply Contract From Evonik Degussa

POCATELLO, ID, Apr 06 (MARKET WIRE) --
Hoku Materials, Inc., a wholly owned subsidiary of Hoku Corporation
(NASDAQ: HOKU), established to manufacture and sell polysilicon for the
solar market, today announced the signing of a supply agreement with
Evonik Degussa Corporation for the purchase of trichlorosilane (TCS), a
key process chemical used in the manufacturing of polysilicon. Hoku plans
to use the TCS supplied by Evonik, together with TCS from other potential
suppliers, to support the first phase of commercial production at its
polysilicon facility in Pocatello, Idaho.

According to the terms of the agreement, Evonik will supply Hoku with a
guaranteed quantity of TCS during the initial contract term of
approximately one year. Hoku will have the option to request quantities
of TCS in addition to the monthly guaranteed take or pay amount. Regular
deliveries are expected to begin in July 2010, although Hoku has the
option to request earlier shipments, as required. Hoku confirmed that it
is using a limited quantity of TCS already supplied by Evonik for Hoku's
reactor test demonstration this month, in addition to TCS supplied by
another producer.

"Hoku is pleased to have established this relationship with Evonik," said
Scott Paul, president and chief executive officer of Hoku Corporation.
"Evonik is one of the world's leading suppliers of TCS. Our interim use
of high-quality TCS from Evonik will enable us to ramp-up commercial
production of polysilicon this summer before we complete the construction
of our on-site TCS plant later this year."

About Hoku Corporation

Hoku Corporation (NASDAQ: HOKU) is a diversified clean energy
technologies company with three business units: Hoku Materials, Hoku
Solar and Hoku Fuel Cells. Hoku Materials plans to manufacture, market
and sell polysilicon for the solar market from its plant currently under
construction in Pocatello, Idaho. Hoku Solar markets and installs turnkey
photovoltaic systems and related services in Hawaii. Hoku Fuel Cells has
developed proprietary fuel cell membranes and membrane electrode
assemblies for stationary and automotive proton exchange membrane fuel
cells. For more information visit www.hokucorp.com.

Hoku, Hoku Solar, and the Hoku Corporation logo are trademarks of Hoku
Corporation, and Hoku Materials is the trademark of Hoku Materials, Inc.,
all rights reserved. All other trademarks, trade names and service marks
appearing in this press release are the property of their respective
holders.

About Evonik

Evonik Industries is the creative industrial group from Germany. In our
core business of specialty chemicals, we are a global leader. In
addition, Evonik is an expert in power generation from hard coal and
renewable energies, and one of the largest private residential real
estate companies in Germany. Our company's performance is shaped by
creativity, specialization, continuous self-renewal, and reliability.

Evonik is active in over 100 countries around the world. In its fiscal
year 2009 about 39,000 employees generated sales of about EUR13.1 billion
and an operating profit (EBITDA) of about EUR2.0 billion. For more
information visit www.evonik.com.

Forward-Looking Statements

This press release contains forward-looking statements that involve many
risks and uncertainties. These statements relate to Hoku Materials'
ability to successfully ramp up production to make and ship
commercial-quality polysilicon in the summer of 2010, if at all; the
timing of when Hoku Materials will receive shipments of TCS from Evonik
Degussa Corporation; the timing of when Hoku Materials will complete the
construction of its on-site TCS facilities; Hoku Corporation's future
financial performance; Hoku Corporation's business strategy and plans;
and objectives of management for future operations. In some cases, you
can identify forward-looking statements by terms such as "anticipate,"
"believe," "can," "continue," "could," "estimate," "expect," "intend,"
"may," "plan," "potential," "predict," "project," "should," "will,"
"would" and similar expressions intended to identify forward-looking
statements. These statements involve known and unknown risks,
uncertainties and other factors that may cause Hoku Corporation's actual
results, performance, time frames or achievements to be materially
different from any future results, performance, time frames or
achievements expressed or implied by the forward-looking statements.
Given these risks, uncertainties and other factors, you should not place
undue reliance on these forward-looking statements. In evaluating these
statements, you should specifically consider the risks described in Hoku
Corporation's filings with the Securities and Exchange Commission, as
applicable. Except as required by law, Hoku Corporation does not assume
any obligation to update these forward-looking statements publicly, or to
update the reasons actual results could differ materially from those
anticipated in these forward-looking statements, even if new information
becomes available in the future.

Contacts for Hoku Corporation:

Hoku Corporation
Tel: 808-682-7800
Email: Email Contact

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