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U.S. DEPARTMENT OF THE TREASURY
U.S. Department of the Treasury, IRS Release Additional
Guidance to Boost American Clean Energy Manufacturing
May 16, 2024

Guidance Provides Additional Clarification Around Eligibility Determination for Domestic
Content Bonus in the Inflation Reduction Act
WASHINGTON – Today the U.S. Department of the Treasury and Internal Revenue Service (IRS)
released additional guidance

on the Inflation Reduction Act’s (IRA) domestic content bonus,

part of President Biden’s economic strategy to boost American manufacturing and iron and
steel production, so American workers and companies can continue to build the clean energy
economy.
The domestic content bonus applies to facilities and projects built using the required amounts
of domestically produced steel, iron, and manufactured products. To receive the bonus, all
manufacturing processes for steel and iron components must take place in the United States. A
statutorily required minimum percentage of the costs of the manufactured products and
components of manufactured products that comprise a facility must be mined, produced, or
manufactured in the United States.
The Treasury Department worked closely with Biden-Harris Administration partners, including
the Department of Energy (DOE), on today’s notice. Treasury’s goal in releasing this guidance is
to provide taxpayers needed clarity and certainty to facilitate uptake of the bonus provision and
unlock investments in American-made clean energy.
“American workers and businesses are committed to making sure the United States economy
benefits from the global transition to clean energy. That is why these incentives to bring clean
energy manufacturing to America are jumpstarting investments across the country. Today’s
guidance provides important clarity to companies and simplifies the process,” said U.S. Deputy
Secretary of the Treasury Wally Adeyemo. “This should help companies make more clean
power investments using U.S.-made equipment, generating new business for manufacturers
and creating more good-paying jobs.”
“The Inflation Reduction Act’s domestic content bonus is a crucial tool for investing in American
workers and American businesses,” said John Podesta, Senior Advisor to the President for

International Climate Policy. “Today’s new safe harbor approach will make it simpler for more
companies to take advantage of this powerful incentive and support good-paying American
jobs.”
Under the Production Tax Credit for clean energy (PTC), facilities that meet domestic content
requirements receive a 10 percent bonus. Under the Investment Tax Credit for clean energy
(ITC), projects that meet the domestic content requirement receive up to a 10-percentage point
bonus. Projects are eligible for the full value of the bonus only if they meet the domestic content
requirement and one of the following requirements: 1) the project has a maximum net output of
less than 1 megawatt of energy; 2) construction of the project began before January 29, 2023; or
3) the project satisfies the Inflation Reduction Act’s prevailing wage and apprenticeship
requirements.
Today’s guidance provides important clarity and certainty on eligibility for the domestic content
bonus. To assist taxpayers in determining whether the minimum percentage of the costs of the
manufactured products and components of manufactured products is met, this notice creates a
new elective safe harbor that gives clean energy developers the option of relying on DOEprovided default cost percentages for an exhaustive set of manufactured products and their
components. This safe harbor is in lieu of obtaining direct cost information from suppliers. The
guidance also amends last May’s Notice

to add more safe harbor classifications, including

the addition of hydropower technologies, as well as to provide clarity for rooftop solar.
Treasury and IRS continue to consider stakeholder comments and plan to issue further
domestic content guidance to address issues not in the scope of this guidance, including adding
further sectors, including offshore wind, to the new elective safe harbor table and issuing
proposed rules for projects using elective pay (sometimes referred to as direct pay). In
particular, Treasury and IRS, with DOE and other agencies, continue to evaluate potential
options to further the IRA’s goal of incentivizing U.S. solar manufacturing, including solar wafer
production.
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