PSC X1MB

Overview

The Product Service Code (PSC) system standardizes how the U.S. federal government classifies products and services for procurement, enabling consistent entry, tracking, and analysis across award reporting systems such as FPDS and SAM. The PSC Manual is the authoritative register and maintenance source for active PSCs and related guidance. ¹

PSC X1MB — Lease/Rental of EPG Facilities - Gas — is a facility-based PSC used to report lease or rental procurements tied to energy-production-and-generation (EPG) gas facilities. The PSC Manual lists X1MB among the X1M family of EPG facility lease/rental codes and treats it as the reporting code for gas-generation facility leasing actions. ¹

See also on G2X:

• X1MB
• X1MA
• Y1MB

What this PSC covers

• Lease or rental of gas-fired power-generation plants and associated generation facilities. ¹
• Short- or long-term facility occupancy agreements for gas turbine plants. ¹
• Leasing of gas-related generation equipment housed within facility structures when reported as part of a facility lease. ¹
• Rental agreements for auxiliary structures integral to gas production and power generation (for example, control rooms, switchgear rooms). ¹
• Facility-use agreements where the predominant procurement value is tied to gas EPG operations. ¹

Related PSC codes

Type	Code	Descriptor
PSC	X1MA	Lease/Rental of EPG Facilities - Coal
PSC	X1MC	Lease/Rental of EPG Facilities - Geothermal
PSC	X1MF	Lease/Rental of EPG Facilities - Petroleum

Verified in the PSC Manual listing of the X1M family of codes. ¹

Reporting and FPDS usage

FPDS requires selection of the single PSC that best represents the predominant product or service on an award; PSC entries must be valid codes from the PSC Manual and are a mandatory FPDS data element (Product/Service Code). Agencies should select X1MB when lease or rental of gas EPG facilities is the primary contract value. ²

Common procurement contexts

• Agency long-term facility access arrangements where operation or use of an existing gas-generation facility is procured via lease or rental instruments; reported under X1MB when gas generation is predominant. Not specified by official sources. ¹

Frequently asked questions

• What is the authoritative source that defines X1MB?
  The PSC Manual on Acquisition.gov is the authoritative source; it lists X1MB in the X1M family (EPG facility lease/rental codes) and is the definitive register for active PSCs. ¹

• When should an award be reported using X1MB in FPDS?
  FPDS requires the PSC that best represents the predominant supplies or services on the award. Use X1MB when leasing or rental of gas EPG facilities comprises the majority of contract value and represents the primary procurement purpose. ²

• Does X1MB map to a specific NAICS code for solicitation use?
  The PSC Manual lists X1MB as a PSC entry but does not prescribe a single NAICS mapping for solicitations; NAICS selection depends on the industry activity that best represents the predominant work and is reported separately. Not specified by official sources. ¹

• Are maintenance or service contracts for gas facilities captured by X1MB?
  Routine maintenance or facility services are generally reported under service PSCs specific to maintenance/repair rather than X1MB, which is intended for lease/rental reporting. Follow agency-specific reporting guidance to determine the correct PSC. ¹

Useful resources

• X1MB — G2X PSC overview (unofficial platform link)
• Product and Service Code Manual (Acquisition.gov) — PSC Manual and spreadsheets (authoritative code list). ¹
• FPDS Data Dictionary — Product or Service Code guidance (FPDS). ²

References

1. Product and Service Code Manual (Acquisition.gov). https://www.acquisition.gov/psc-manual
2. V1.4 FPDS-NG Data Dictionary — Product or Service Code (FPDS). https://www.fpds.gov/wiki/index.php/V1.4_FPDS-NG_Data_Dictionary

Related NAICS and PSC codes

• Mapping between PSCs and NAICS is not prescribed by the PSC Manual; agencies must choose the NAICS code that best describes the predominant industry activity for the award rather than relying on a one-to-one PSC→NAICS rule. Not specified by official sources. ^[1]

Suggested NAICS (examples — for solicitation/award classification; NOT authoritative mappings):

• 221112 — Fossil Fuel Electric Power Generation (covers fossil-fuel-fired electric generation, commonly including natural-gas-fired plants). Not specified by official sources. ^[1]
• 531120 — Lessors of Nonresidential Buildings (used when the procurement is principally a real-property lease of a nonresidential facility). Not specified by official sources. ^[1]
• 532490 — Other Commercial and Industrial Machinery and Equipment Rental and Leasing (used when rental of major equipment packaged separately from real-property leasing is predominant). Not specified by official sources. ^[1]

Related PSCs (common siblings or alternative PSCs to consider when determining the most appropriate code for an action):

• X1MA — Lease/Rental of EPG Facilities - Coal. ^[1]
• X1MC — Lease/Rental of EPG Facilities - Geothermal. ^[1]
• X1MF — Lease/Rental of EPG Facilities - Petroleum. ^[1]
• Y1MB — (Related Y-family PSC for facility lease/rental reporting where applicable). Not specified by official sources. ^[1]

Practical guidance: select the single PSC that best represents the predominant leased facility/service and the NAICS that best represents the principal industry activity; follow FPDS reporting rules when completing award records. ^[2]