On November 17, 2023, the Treasury Department and IRS published final regulations implementing the prevailing wage and apprenticeship requirements that are central to the enhanced energy tax credits enacted by the Inflation Reduction Act.^[1] These requirements are not optional niceties—they are the gateway to the full value of virtually every business energy credit in the IRA. A project that fails to meet the prevailing wage and apprenticeship requirements receives only 20 percent of the otherwise available credit. For a project eligible for the 30 percent Investment Tax Credit, this means the effective credit drops to 6 percent—a reduction that can fundamentally alter the economics of the investment.

The Prevailing Wage Requirement

The prevailing wage requirement mandates that laborers and mechanics employed by the taxpayer or any contractor or subcontractor in the construction, alteration, or repair of a qualifying energy facility be paid wages at rates not less than the prevailing rates for corresponding classes of laborers and mechanics in the locality in which the facility is located, as determined by the Secretary of Labor under the Davis-Bacon Act.^[2]

The final regulations clarify several important points. First, the prevailing wage requirement applies not only during the construction of the facility but also during the alteration and repair of the facility for a period of years after the facility is placed in service. For most credits, this ongoing requirement lasts for five years; for certain credits, it extends for ten years. Second, the requirement applies to all laborers and mechanics working on the project, regardless of whether they are employed directly by the taxpayer or by a contractor or subcontractor at any tier. The taxpayer is responsible for ensuring compliance throughout the chain of construction participants.

Third, the regulations provide a correction and penalty regime for prevailing wage deficiencies. If a taxpayer discovers that prevailing wages were not paid, the taxpayer may cure the deficiency by paying each affected worker the difference between the prevailing wage and the amount actually paid, plus interest, and by paying a penalty to the IRS of $5,000 per affected worker. For intentional disregard of the prevailing wage requirements, the penalty increases to $10,000 per affected worker, with no cure provision.

The Apprenticeship Requirement

The apprenticeship requirement mandates that a specified percentage of the total labor hours for the construction, alteration, or repair of a qualifying facility be performed by qualified apprentices. The percentage requirement is phased in: 12.5 percent for projects that begin construction before January 1, 2024, and 15 percent for projects that begin construction on or after that date.^[3]

Qualified apprentices must be participants in apprenticeship programs registered with the Department of Labor or a recognized state apprenticeship agency. The final regulations provide a good-faith exception for taxpayers who request qualified apprentices from registered apprenticeship programs but are unable to obtain them—recognizing that in some trades and some geographic areas, there may be a shortage of available apprentices. To qualify for the exception, the taxpayer must document its request and the program's inability or unwillingness to provide apprentices.

Which Credits Are Affected

The prevailing wage and apprenticeship requirements apply to virtually all of the IRA's business energy credits, including the Production Tax Credit under § 45, the Investment Tax Credit under § 48, the clean hydrogen production credit under § 45V, the carbon capture credit under § 45Q, the clean fuel production credit under § 45Z, the advanced manufacturing credit under § 45X, and the technology-neutral clean electricity credits under §§ 45Y and 48E. The requirements generally apply to facilities with a maximum net output of one megawatt of electrical or thermal energy (AC) or more.

For smaller projects below the one-megawatt threshold, the prevailing wage and apprenticeship requirements do not apply, and the full credit is available without meeting these labor standards. This exception is significant for small commercial solar installations, which may fall below the threshold and thereby avoid the compliance burden.

Practical Compliance Strategies

For business owners and developers undertaking qualifying energy projects, compliance with the prevailing wage and apprenticeship requirements should be integrated into the project from the earliest planning stages. Several practical strategies are essential.

First, prevailing wage requirements should be incorporated into all construction contracts and subcontracts. The contracts should require each contractor and subcontractor to pay prevailing wages, maintain payroll records demonstrating compliance, and provide periodic certifications to the taxpayer. The contracts should also include indemnification provisions protecting the taxpayer in the event of a contractor's non-compliance.

Second, apprenticeship requirements should be addressed before construction begins. The taxpayer or general contractor should contact registered apprenticeship programs in the relevant trades and geographic area to request apprentices. If apprentices are unavailable, the request and the program's response should be documented contemporaneously to support the good-faith exception.

Third, taxpayers should establish monitoring and recordkeeping systems to track compliance during construction. This includes maintaining certified payroll records for all workers, tracking apprenticeship hours as a percentage of total labor hours by trade, and documenting any cure payments made for prevailing wage deficiencies. The IRS has indicated that it will require taxpayers to maintain and produce these records upon audit, and a taxpayer who cannot document compliance may lose the enhanced credit.^[4]

The prevailing wage and apprenticeship requirements represent a new compliance dimension for energy tax credits that did not exist before the IRA. The five-to-one credit differential makes compliance essential for any project above the one-megawatt threshold. Taxpayers who plan for these requirements from the outset will find compliance manageable; those who attempt to retrofit compliance after construction is underway will find it far more difficult and expensive. For guidance on structuring energy investments to maximize available credits, consult with experienced tax counsel.^[5]