economics

The Buy Clean Initiative: How Federal Procurement Addresses Embodied Carbon in Coatings

Sundial Research Team·February 20, 2025·5 min

The Buy Clean Initiative, launched by the Biden Administration, represents a significant shift in federal procurement policy. For the first time, federal agencies are required to consider the embodied carbon of construction materials - the greenhouse gas emissions associated with the extraction, manufacturing, transportation, and installation of building products. While the initial focus has been on structural materials like steel and concrete, the initiative's framework extends to all construction products, including coatings. For government specification writers, understanding Buy Clean and how powder coating's lower carbon footprint supports compliance is essential for meeting both climate and health objectives.

The Buy Clean Initiative: How Federal Procurement Addresses Embodied Carbon in Coatings

Buy Clean was established through:

  • Executive Order 14057: Federal sustainability commitments
  • Federal Buy Clean Task Force: Coordinated implementation
  • EPA and GSA leadership: Program development and standards
  • OMB guidance: Budget and procurement integration

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The Buy Clean Initiative: How Federal Procurement Addresses Embodied Carbon in Coatings

What Is Buy Clean?

Policy Framework

Core Requirements

RequirementDescriptionImplementation
Prioritize low-carbon materialsSpecify materials with below-average embodied carbonAgency procurement policies
Require EPDsEnvironmental Product Declarations for materialsSpecification requirements
Set benchmarksMaximum acceptable GWP for material categoriesCategory-specific standards
Track and reportDocument embodied carbon in federal projectsData collection systems

Scope

Buy Clean applies to:

  • Federal construction projects: New buildings, renovations, infrastructure
  • Federally funded projects: Grants, loans, partnerships
  • Major federal acquisitions: Above specified thresholds

Embodied Carbon in Coatings

What Is Embodied Carbon?

Embodied carbon (or embodied greenhouse gas emissions) includes:

Lifecycle PhaseEmission Sources
Raw material extractionPetroleum drilling, mining, processing
Material manufacturingChemical synthesis, pigment production, resin polymerization
TransportationShipping raw materials and finished products
ApplicationSurface preparation, coating application, curing energy
MaintenanceRe-coating, surface preparation, material replacement
End-of-lifeDisposal, recycling, waste treatment

Coating Carbon Footprint Comparison

Coating TypeEstimated GWP (kg CO2e/kg coating)Key Drivers
Solvent-based alkyd4-8Solvent production, VOC emissions, frequent re-coat
Water-based acrylic3-6Lower solvent but water evaporation energy, coalescing aids
High-solids polyurethane3-5Reduced solvent, but isocyanate production energy
Powder coating2-4No solvents, high efficiency, longer life
UV-curable powder1.5-3Lower cure energy, rapid processing

Note: These are illustrative ranges; actual values depend on specific formulations and application conditions

Powder Coating's Buy Clean Advantage

1. No Solvent Production Emissions

Solvent-based coatings require:

  • Petroleum extraction and refining
  • Chemical processing to produce specific solvents
  • Transportation of flammable, hazardous materials
  • Energy-intensive distillation and purification

Powder coatings eliminate these emissions entirely.

2. Higher Material Efficiency

Transfer efficiency directly affects embodied carbon:

EfficiencyMaterial MultiplierCarbon Multiplier
Liquid (35% TE)2.9x theoretical2.9x baseline
Powder (95% TE)1.05x theoretical1.05x baseline

The 2.8x difference in material consumption translates directly to embodied carbon.

3. Longer Service Life

Durability reduces lifecycle carbon:

Service LifeRe-coat FrequencyCumulative Carbon
Liquid (7 years)2.9x over 20 years2.9x initial
Powder (15 years)1.3x over 20 years1.3x initial

Longer service life means less frequent material production, transportation, and application.

4. Reduced Waste Generation

Hazardous waste treatment has carbon costs:

  • Liquid paint waste: Incineration, fuel for transport, treatment chemicals
  • Powder waste: Minimal; non-hazardous disposal

5. Energy Efficiency

While powder coating requires oven energy, the overall energy balance is favorable:

  • No solvent evaporation energy
  • Lower ventilation energy
  • Shorter process cycles (especially UV-curable)
  • Reduced makeup air conditioning

Environmental Product Declarations

What Is an EPD?

An Environmental Product Declaration is:

  • A verified, standardized report of a product's environmental impact
  • Based on ISO-compliant lifecycle assessment
  • Third-party verified for accuracy
  • Valid for a specified period (typically 5 years)

EPD Content

SectionInformation Provided
Product descriptionComposition, intended use, performance
LCA resultsGWP, acidification, eutrophication, ozone, toxicity
Raw materialsPrimary constituents, recycled content
ManufacturingEnergy use, emissions, waste
PerformanceDurability, service life, maintenance

Coating EPDs

EPD availability for coatings:

Coating CategoryEPD AvailabilityNotes
Architectural paintGrowingMajor manufacturers developing
Industrial coatingsLimitedEmerging market
Powder coatingsEmergingIndustry association developing
Automotive coatingsLimitedOEM-specific programs

The powder coating industry is actively developing EPDs to support Buy Clean compliance.

Buy Clean Implementation for Coatings

Specification Language

Government specifications can incorporate Buy Clean requirements:

"Coating products shall have a Type III EPD in accordance with ISO 14025. Products with Global Warming Potential (GWP) below the industry average, as documented by the EPD, shall be preferred. Powder coating products meeting performance requirements shall be specified where application-compatible."

Evaluation Criteria

For procurement evaluations, agencies can weight:

CriterionWeightRationale
Performance40%Must meet technical requirements
Cost30%Lifecycle cost, not just material cost
Embodied carbon20%Buy Clean compliance
Health/safety10%Worker and occupant protection

Benchmark Setting

Buy Clean benchmarks for coatings could be established by:

  1. Industry average GWP: Based on collected EPDs
  2. Best-in-class: Top quartile performance
  3. Progressive reduction: Tighter standards over time
  4. Application-specific: Different benchmarks for different uses

The Health-Climate Synergy

Buy Clean creates a valuable synergy between climate and health goals:

Buy Clean ObjectiveHealth Co-Benefit
Reduce embodied carbonEliminate solvent production and emissions
Specify low-GWP materialsReduce worker exposure to hazardous chemicals
Extend service lifeReduce maintenance worker exposure frequency
Require EPDsIncrease transparency about hazardous constituents
Track environmental performanceDocument health protection outcomes

Powder coating exemplifies this synergy: it has lower embodied carbon and eliminates worker exposure to carcinogens, neurotoxicants, and respiratory sensitizers.

Challenges and Opportunities

Challenges

ChallengeDescriptionSolution
Limited EPDsFew coating EPDs availableIndustry development, specification requirement
Benchmark developmentInsufficient data for category averagesPhased implementation, voluntary first
Cost premiumsLow-carbon materials may cost moreLifecycle cost evaluation, volume purchasing
Performance verificationEnsuring low-carbon meets requirementsTesting, certification, warranties
Small manufacturersMay lack resources for EPDsIndustry association programs, simplified EPDs

Opportunities

OpportunityDescription
Market transformationGovernment demand drives industry change
Innovation incentiveR&D investment in low-carbon coatings
Health protectionCo-benefit of climate-focused procurement
US manufacturingDomestic production reduces transport carbon
International leadershipUS example influences global markets

Conclusion

The Buy Clean Initiative represents a fundamental shift in how federal agencies evaluate construction materials. By requiring consideration of embodied carbon, the initiative creates a framework that naturally favors materials with lower lifecycle environmental impact - including powder coatings with their elimination of solvents, higher material efficiency, and longer service life.

For specification writers, Buy Clean provides an additional rationale for powder coating specification that complements the health and safety case. The lower embodied carbon of powder coating supports climate goals while the zero-solvent formulation protects worker health. This synergy between environmental and health objectives makes powder coating a natural choice for agencies seeking to meet multiple policy mandates with a single specification decision.

As the Buy Clean program matures and EPDs become standard for coating products, the environmental advantage of powder coating will be increasingly quantified and visible. Specification writers who adopt powder coating today are not merely ahead of the regulatory curve - they are demonstrating that climate policy and worker protection can advance together, reinforcing each other in the transition to a more sustainable and healthier built environment.

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