Buy Clean Requirements
Buy Clean standards, also known as embodied carbon standards, represent a procurement policy approach that incorporates low-carbon requirements into construction purchases. These requirements address the greenhouse gas (GHG) emissions from embodied carbon in materials purchased by governments for public infrastructure projects. Embodied carbon refers to the GHG emissions generated during the extraction, manufacturing, transportation, installation, and end-of-life phases of construction materials used for buildings, roads, and other infrastructure. To quantify the embodied carbon of materials, a life cycle assessment is conducted to track the GHG emissions produced over the life cycle of a product.
Buy Clean policies use a combination of disclosure, incentives, and standards to leverage the significant purchasing power of public agencies to encourage a shift toward low-carbon options in the broader construction materials market. Buy Clean is an approach that can be applied at the federal, state, or local level, and can also be used by private building owners.
Key Resources
Embodied Carbon Policy Toolkit
Guidance on Implementing Low-Carbon Construction Material Policies and Limits on Public Projects
Buy Clean in States
Model States
California
State agencies must consider the emissions performance of suppliers when procuring steel, flat glass, and mineral wool insulation for state infrastructure projects.
The state must achieve a 40% reduction in cement emissions by 2035, and net-zero by 2045, relative to 2019 levels.
CARB must also develop a framework for measuring and reducing the embodied carbon of building construction materials, primarily at the materials production stage, and can utilize an embodied carbon trading system as a potential path to achieve the required GHG reductions.
Colorado
Public construction projects must meet environmental criteria for the use of seven common construction materials, such as cement, glass, and steel.
Colorado also has a sales and use tax exemption for low-emission building materials, including green concrete, recycled steel and composite wood products. Construction materials with low embodied carbon eligible for the state’s Commercial Property Assessed Clean Energy (C-PACE) financing program and Industrial Clean Energy Tax Credit.
New York
The Office of General Services established guidelines for the procurement of low embodied carbon concrete and requires the state to set an emissions standard for concrete used in public works.
Washington
The state has funded the creation of a database to track building materials purchased for state-funded infrastructure projects and two large Buy Clean and Buy Fair pilot projects.
State contractors must report on large construction projects, including suppliers’ declarations on environmental, health, and working conditions for covered products, such as concrete, steel, and engineered wood. The Department of Commerce must convene a working group to recommend policies to increase production and use of low-carbon construction materials.
Buy Clean Requirements By State
Status | State Sort descending | Region | Components | Year Enacted | |
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Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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West | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southwest | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Enacted |
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State agencies must consider the emissions performance of suppliers when procuring steel, flat glass, and mineral wool insulation for state infrastructure projects. The state must achieve a 40% reduction in cement emissions by 2035, and net-zero by 2045, relative to 2019 levels. CARB must also develop a framework for measuring and reducing the embodied carbon of building construction materials, primarily at the materials production stage, and can utilize an embodied carbon trading system as a potential path to achieve the required GHG reductions. Empty column
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West | 2021 | ||
Enacted |
Empty column
Public construction projects must meet environmental criteria for the use of seven common construction materials, such as cement, glass, and steel. Colorado also has a sales and use tax exemption for low-emission building materials, including green concrete, recycled steel and composite wood products. Construction materials with low embodied carbon eligible for the state’s Commercial Property Assessed Clean Energy (C-PACE) financing program and Industrial Clean Energy Tax Credit. Empty column
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West | 2025 | ||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Northeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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West | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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West | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Northeast | |||
Enacted |
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By January 1, 2026, the Department of General Services (DGS), in consultation with the Maryland Department of Transportation (MDOT), must establish a maximum acceptable global warming potential (GWP) for each category of cement or concrete mixture used in the construction of an eligible project. Beginning July 1, 2026, state agencies must specify the cement or concrete mixture that will be used in construction projects, and requires contractors to submit environmental product declarations before installing any cement or concrete mixture. Empty column
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Southeast | 2023 | ||
Enacted |
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The Embodied Carbon Intergovernmental Coordinating Council must prepare an “embodied carbon reduction plan,” including strategies to measure, monitor and reduce embodied carbon, by January 1, 2026. Empty column
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Northeast | 2024 | ||
Not Enacted |
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Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Enacted |
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The Environmental Standards Procurement Task Force is responsible for examining the implementation of a program requiring vendors of the state to measure, report, and limit the lifecycle greenhouse gas impact of certain construction materials. Empty column
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Midwest | 2023 | ||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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West | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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West | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Northeast | |||
Enacted |
Empty column
Concrete mixes with Global Warming Units (GWUs) below a threshold established by the NJ Department of Environmental Protection are eligible for tax credits up to 8% of the cost of the contract. Empty column
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Northeast | 2023 | ||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southwest | |||
Enacted |
Empty column
The Office of General Services established guidelines for the procurement of low embodied carbon concrete and requires the state to set an emissions standard for concrete used in public works. Empty column
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Northeast | 2021 | ||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Southwest | |||
Enacted |
Empty column
State regulators must conduct life cycle assessments for select construction and maintenance materials used for public infrastructure projects. Empty column
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West | 2022 | ||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Northeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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Northeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Southwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
West | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Northeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Southeast | |||
Enacted |
Empty column
The state has funded the creation of a database to track building materials purchased for state-funded infrastructure projects and two large Buy Clean and Buy Fair pilot projects. State contractors must report on large construction projects, including suppliers’ declarations on environmental, health, and working conditions for covered products, such as concrete, steel, and engineered wood. The Department of Commerce must convene a working group to recommend policies to increase production and use of low-carbon construction materials. Empty column
|
West | 2024 | ||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Southeast | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
|
Midwest | |||
Not Enacted |
Empty column
Buy clean requirements mandate or incentivize the use of low-carbon construction materials, such as concrete and steel, in public projects to address embodied carbon. Empty column
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West |