Solar-Fabrik and Hoku Scientific Announce Polysilicon Supply Memorandum of Understanding

Freiburg, Germany and Kapolei, Hawaii (ots) - Hoku Materials, a
business unit of Hoku Scientific, Inc. (NASDAQ: HOKU) that is
planning to manufacture and sell polysilicon, and Solar-Fabrik AG
(SFXG.DE) today announced that they have signed a non-binding
Memorandum of Understanding ("MOU") for the supply of solar grade
polysilicon.

Under the terms outlined in the MOU, Hoku would supply polysilicon
chunks to Solar-Fabrik over a fixed number of years at pre-determined
pricing on a non-cancelable order. As currently contemplated in the
MOU, sales of polysilicon are expected to generate between $120 and
$140 million in revenue for Hoku over a several-year period
commencing in approximately two years. Hoku intends to manufacture
the polysilicon chunks at a new facility it is planning in Idaho.
Hoku expects to commence construction of its Idaho facility in the
first half of calendar year 2007, subject to available financing and
other conditions, and complete construction in late 2008.

"Solar-Fabrik has quickly emerged as a strong player in the global
module market, and its upstream integration strategy makes them an
ideal partner for us," said Dustin Shindo, Chairman and CEO of Hoku
Scientific. "We are very impressed with their business strategy and
believe that they are well positioned to be a leader in this growing
industry."

"We're pleased to pursue this polysilicon supply relationship with
Hoku Materials," said Georg Salvamoser, CEO of Solar-Fabrik. "We
have evaluated a number of polysilicon supply opportunities in the
market, and are confident in Hoku's ability to deliver."

The MOU reflects the parties' intent to conclude a definitive
agreement within 60 days; however, Hoku and Solar-Fabrik cannot
assure that a definitive agreement will be concluded within this time
frame, or at all. Execution of the definitive agreement is
contingent on agreement on all material terms and other customary
closing conditions for transactions of this nature.

About Hoku Scientific, Inc.

Hoku Scientific (NASDAQ: HOKU) is a clean energy technologies
company that develops and manufactures fuel cell membranes and
membrane electrode assemblies for stationary (includië@`*¿nd
back-up pêP applications) and automotive proton exchange membrane
fuel cells. The Company is currently planning to expand its business
to manufacture solar modules and polysilicon for the solar and
integrated circuit markets. For more information visit
www.hokuscientific.com.

About Solar-Fabrik AG

Solar-Fabrik has grown in only a decade from a solar panel maker
to an internationally focused, stock market-listed, fully integrated
solar power group. Solar-Fabrik and its subsidiaries and associates
span the entire solar power value chain: wafer trading, wafer
recovery, solar cell manufacture, solar module production and system
solutions. Solar-Fabrik AG is headquartered in Freiburg, Germany,
where the company's two factories turn solar cells into top-quality
solar modules. Solar-Fabrik customers include solar energy
specialists and general importers throughout Europe. Module
production is ISO-certified and runs entirely on renewable energy, in
what is Europe's first CO2-neutral zero emissions manufacturing
facility for solar modules. Solar-Fabrik also provides customers with
system solutions based on carefully matched high-quality components.
GEWD is a silicon wafer trading house based in Kuala Lumpur
(Malaysia) and is wholly owned by Solar-Fabrik AG. GEWD buys
recyclable wafers from the semiconductor industry, opening up a new
source of raw material previously unavailable to the solar power
sector. Based in Chennai (India), Poseidon Solar-Services specializes
in recovering recyclable wafers. Solar-Fabrik uses wafers recovered
by Poseidon to manufacture high-quality solar cells. Singapore-based
solar cell manufacturer SEP turns raw wafers recovered by Poseidon
into high-quality solar cells. Solar-Fabrik AG holds a one-third
stake in SEP.

Forward-Looking Statements

This press release contains forward-looking statements that
involve many risks and uncertainties. These statements relate to Hoku
and Solar-Fabrik's beliefs and expectations that the definitive
agreement would generate between $120 and $140 million in revenue for
Hoku; Hoku's ability to establish polysilicon production facilities
and manufacture polysilicon, to manufacture polysilicon of sufficient
quality; Hoku 's future financial performance; Hoku'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'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's
filings with the Securities and Exchange Commission. Except as
required by law, Hoku assumes no 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.

Hoku, Hoku Solar, Hoku Materials and the Hoku Scientific logo are
trademarks of Hoku Scientific, Inc., all rights reserved.

Originaltext: Solar-Fabrik AG
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ISIN: DE0006614712

Contact:

Martin Schlenk, Investor Relations Manager
E-Mail: m.schlenk@solar-fabrik.de
Tel.: +49-761-4000-207, Fax: +49-761-4000-199

Andrea Ocker, Public Relations Manager
E-Mail: a.ocker@solar-fabrik.de
Tel.: +49-761-4000-130, Fax: +49-761-4000-199