PSC B543

Overview

The Product Service Code (PSC) is a uniform taxonomy the U.S. government uses to categorize what is being bought so contract actions can be recorded consistently in systems such as FPDS and analyzed across agencies. The PSC structure and definitions are maintained through the PSC Manual on Acquisition.gov and applied in federal procurement reporting and management. ¹
PSC B543 denotes “Special Studies/Analysis – Energy” within Category B (Special Studies/Analysis, not R&D). It is used when the predominant purpose of the contracted effort is an energy-focused special study or analysis rather than research and development, engineering, construction, or operations. ²

See also on G2X:

• G2X — PSC B543 overview: https://app.g2xchange.com/psc/B543
• G2X — PSC B540 (Special Studies/Analysis – Building Technology): https://app.g2xchange.com/psc/B540
• G2X — PSC S112 (Utilities – Electric): https://app.g2xchange.com/psc/S112

What this PSC covers

• Non-R&D special studies and analytical efforts where energy is the predominant subject. ²
• Work categorized under “Special Studies/Analysis” (Category B) rather than engineering, construction, or operations categories. ²
• Standalone assessments, surveys, or evaluations related to energy themes; Not specified by official sources. ²
• Documentation and reporting of analytical findings; deliverable formats are Not specified by official sources. ²
• Selection based on the predominant purpose of the buy when multiple activities are present in the action. ¹
• Government-wide applicability across civilian and defense agencies under the PSC framework. ¹

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	B540	Special Studies/Analysis – Building Technology
PSC	B542	Special Studies/Analysis – Educational
PSC	B544	Special Studies/Analysis – Technology

Source: Verified in the PSC Manual (April 2025). ²

Reporting and selection notes

• Category B is explicitly “Special Studies/Analysis, Not R&D.” If the effort’s principal purpose is an energy-focused analysis rather than R&D, engineering, or facility operations, agencies select B543. ²
• FPDS reporting instructs agencies to choose the PSC based on the predominant product or service in the action when multiple activities exist. ¹

Examples in federal reporting

• FPDS award records show agencies coding energy-focused study efforts under B543; for instance, certain BPA calls by the USDA Forest Service are reported with PSC B543 (example records available via FPDS ezSearch). Specific work scopes in those examples are Not specified by official sources. ³

Frequently asked questions

• What does PSC B543 mean?
  PSC B543 is defined as “Special Studies/Analysis – Energy” within Category B for non-R&D services. It signals that the predominant purpose of the buy is an energy-related analysis or special study, not research and development or construction/operations. ²

• How is B543 different from R&D energy work?
  Category B covers special studies/analysis that are not R&D. If the primary purpose is research and development, an R&D PSC in Section A applies; if it is a non-R&D energy study, B543 applies based on the manual’s category definitions and selection guidance. ²

• Are there official examples of deliverables under B543?
  The PSC Manual provides code titles but does not enumerate deliverables for B543. Agencies report the PSC based on the predominant service, but specific deliverable types for this code are Not specified by official sources. ²

• Is there an official NAICS crosswalk for B543?
  An authoritative PSC-to-NAICS crosswalk for B543 is Not specified by official sources. The PSC Manual governs PSC usage and code selection; NAICS selection follows separate policy and does not provide a one-to-one mapping for this PSC. ¹

• Where is PSC B543 guidance published and how current is it?
  The PSC Manual library on Acquisition.gov hosts current and archived editions; the FY 2025 edition (effective April 2025) lists B543 under Category B5. Users should reference the current manual for code titles and selection notes. ²

Useful resources

• G2X — PSC B543 page: https://app.g2xchange.com/psc/B543
• Product and Service Code Manual (library landing page), Acquisition.gov. ¹
• PSC Manual, April 2025 (FY 2025 edition, effective April 2025). ²
• FPDS ezSearch example results showing awards coded under PSC B543. ³

References

1. Acquisition.gov — Product and Service Code Manual (library landing page): https://www.acquisition.gov/psc-manual
2. PSC Manual, April 2025 (PDF), Section C, Category B5 listing including B543: https://login.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
3. FPDS ezSearch — Example award results coded under PSC B543: https://www.fpds.gov/ezsearch/fpdsportal?indexName=awardfull&q=PRODUCT_OR_SERVICE_CODE%3A%22B543%22&templateName=1.5.3