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$ Congressional Research Service
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February 2, 2018


Domestic Solar Manufacturing and New U.S. Tariffs


On January 23, 2018, President Trump signed a presidential
proclamation imposing emergency tariff restrictions, known
as safeguards, over the next four years on U.S. imports of
crystalline silicon photovoltaic (PV) cells and modules. The
proclamation also included an annual 2.5 gigawatt tariff-
free quota for solar cells; however, imports of solar
modules are to face tariffs regardless of volume.
On February 7, 2018, the initial solar equipment tariff is to
be 30%. Thereafter, the tariffs are to decline yearly,
bottoming out at 15%. The temporary solar tariffs are set to
expire on February 6, 2022, but the President may extend
them for a maximum of another four years.
The proclamation, one of the first trade actions by the
Trump Administration, stems from a petition filed by two
U.S.-based but foreign-owned solar equipment
manufacturers and a subsequent ruling by the U.S.
International Trade Commission (ITC) that imports have
caused injury to domestic producers.
Solar Photovoltaic Manufacturing
The proclamation concerns PV cells and modules made
with crystalline silicon, which is the main technology used
by solar manufacturers (accounting for more than 90% of
global PV production) and used to produce solar energy.
Manufacturing such products does not require assembly of
complex machinery and thousands of parts; most PV
systems have no moving parts at all. Solar cells, the basic
components of a PV system, are assembled into modules,
also known as panels, and modules in turn are connected to
one another in arrays (see Figure 1) that feed energy into a
building's electrical system or a utility's power grid.
Figure I. Solar (PV) Cell, Module, and Array







Source: Adapted by CRS from SamlexSolar.
Solar modules are often described as a commodity,
meaning they can be mass-manufactured and their quality is
similar among most manufacturers. Large producers have a
cost advantage because of economies of scale.
Major capital investments are needed to build or upgrade a
PV manufacturing facility. PV production is highly
automated. Domestic module manufacturers have told the
ITC that labor costs accounted for about 7% of production
costs in 2016. Domestic transportation costs for finished
modules produced in the United States are in the range of
2%-3% of value. The costs of materials, capital equipment,
and research and development account for much of the rest.


U.S. Demand for Solar Equipment
Over 1.3 million PV systems (with 14.8 gigawatts of
capacity) were installed in the United States in 2016, more
than four times the level of 2012. A number of factors
account for the growing domestic demand for PV products,
including falling cell and module prices, the solar
investment tax credit, state standards that require utilities to
generate power from renewable sources, and higher
efficiency.
Domestic Solar Manufacturing
Domestic PV manufacturing has expanded in recent years.
An August 2017 ITC report found that between 2012 and
2016, production capacity of U.S. PV module
manufacturers rose 34%, and domestic production
expanded by 24%. Nonetheless, falling prices have made it
difficult for domestic PV manufacturers to operate
profitably. From January 1, 2012, to July 2017, more than
two dozen domestic PV producers were in bankruptcy or
shuttered their U.S. operations. Approximately 20 solar PV
manufacturing facilities were in operation domestically as
of July 2017, according to the ITC.
Cell and module production occurs mostly outside the
United States. In 2015, U.S. production accounted for 2%
of worldwide cell and module production, according to the
International Energy Agency.
Solar Manufacturing Employment
A relatively small share of the 260,000 solar jobs in the
United States is in manufacturing; most jobs are in the
design, sales, and installation of solar systems. About
38,100 workers-roughly 15% of all jobs in the solar
industry-were employed in producing solar equipment in
November 2016, according to the Solar Energy Industries
Association (SEIA), an industry trade group (see Figure 2).
Of the manufacturing jobs, SEIA estimates 2,000 people are
employed in solar cell and module production. SEIA, which
opposes the safeguards, projects they will raise the cost of
cells and modules, leading to a lower number of
installations and the loss of 23,000 jobs.
Figure 2. U.S. Solar Energy Industry Employment








Source: SEIA, National Solar Job Census, 2016.
Imports of Solar Cells and Modules
According to one estimate, imports of solar cells and
modules supplied 88% (roughly 13 gigawatts) of U.S.
domestic demand in 2017. Because of the domestic solar
industry's high dependence on imported cells and modules,


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