|2018 –||Hundreds of employees of Hemlock
Semiconductor (HSC) called
on President Donald Trump to take action on behalf of U.S.(PDF) polysilicon manufacturing and work
to restore the polysilicon industry’s access to China which would sustain U.S.
polysilicon manufacturing jobs and create opportunities for growth in Michigan
and across the U.S.
|2016 –||Ownership change, following the
restructure of ownership of Dow Corning Corporation to become a wholly-owned
subsidiary of The Dow Chemical Company. Hemlock Semiconductor Group is composed
of several joint venture companies owned by The Dow Chemical Company, Corning
Inc. and Shin-Etsu Handotai.
|2014 –||Hemlock Semiconductor
Corporation announced the permanent closure of the Tennessee plant, due to
adverse industry conditions and ongoing challenges from Chinese imposition of
significant duties on imports of polycrystalline silicon from the U.S.
|2013 –||The Michigan Department of
Environmental Quality (DEQ) designated Hemlock Semiconductor’s Michigan site as
a member of the state’s Clean Corporate Citizen (C3) Program. Membership in the C3
Program is one of the DEQ’s highest environmental stewardship
|2012 –||In 2012, the U.S. imposed duties
on imports of Chinese and Taiwanese solar cells and modules, after finding that
the Chinese were flooding the U.S. market with cheap panels and harming the
ability of U.S. panel makers to sell their products. China also filed a trade
action targeting U.S. polysilicon, the fundamental building block for solar
cells and modules, and imposing significant duties on imports from the United
States beginning in 2014.
|2011 –||Hemlock Semiconductor celebrates
|2010 –||Vice President Joe Biden tours
Michigan site; Tennessee site project team moves into the first on-site
|2009 –||Site construction begins at a
new plant in Tennessee; new capacity is brought on line in Michigan.
|2008 –||A $1 billion expansion in
Michigan and $1.2 billion investment in a new plant in Tennessee are
|2007 –||$1 billion expansion to increase
the company’s total annual output of polysilicon to 36,000 metric tons
|2006 –||The Michigan site increases
production to 10,0000 MT. “Solar 2” production capacity expansion is approved
and contracted for up to 19,000 MT, starting in 2009 a global “Green Site”
search for a second production location is initiated.
|2005 –||$500 million expansion that will
increase capacity by 100 percent announced; construction begins.
|2002 –||ISO 9001:2000 certification
achieved. Hemlock Semiconductor Corporation enters the market as a manufacturer
of solar-grade polysilicon.
|1999 –||The site increases production to
6,200 MT. Technology advancements provide an ultra-clean polycrystalline
silicon product in anticipation of future 300-400mm wafer supply
|1997 –||Another significant expansion
results in an additional 40 percent polycrystalline silicon production
|1995 –||A major expansion results in a
total site capacity of 4,000 MT per year of polycrystalline silicon
|1994 –||Hemlock Semiconductor
Corporation becomes one of the world’s largest producers/suppliers of
|1992 –||Hemlock Semiconductor
Corporation expands its polycrystalline silicon production capacity by 20
percent and achieves ISO 9002 registration.
|1989 –||The use of cleanroom processing
for polycrystalline silicon finishing operations was improved and
|1986 –||Hemlock Semiconductor
Corporation triples its previous capacity, focusing on leading-edge processing
technology, advanced chemical purification, and parts-per-trillion analysis
|1984 –||Hemlock Semiconductor
Corporation becomes a joint venture of Dow Corning and two of Japan’s largest
single-crystal wafer manufacturers, Shin-Etsu Handotai Co., Ltd. and Mitsubishi
|1979 –||Hemlock Semiconductor
Corporation is formed as a wholly-owned subsidiary of Dow Corning
|1969 –||The end of a decade in which the
site doubles its manufacturing capabilities three times, largely due to the
growth of the electronics industry.
|1961 –||Polycrystalline silicon
|1960 –||Hemlock Semiconductor’s Michigan
site is selected for the first fully integrated polycrystalline silicon
|1957 –||Dow Corning Corporation
implements technology to manufacture polycrystalline silicon.