PSC Z1MC

Overview

The Product Service Code (PSC) system is a governmentwide taxonomy used to classify goods and services procured by the U.S. federal government. PSCs populate FPDS data element 8A and support spend analysis, category management, and reporting; the codes and management processes are maintained in the PSC Manual on Acquisition.gov.¹

PSC Z1MC — Maintenance of EPG Facilities - Geothermal — is the service-code label used to identify procurements whose predominant purpose is maintenance of geothermal energy production and related facility infrastructure. The PSC Manual lists Z1 (the Z1 family) as the maintenance family covering buildings, utilities, and non-building facilities, and indicates the appropriate use of geothermal-specific Z1-series codes when geothermal facility maintenance is the primary contract purpose.¹

See also on G2X:

• G2X — PSC Z1MC
• G2X — PSC Z2MC (repair/alteration for geothermal)
• G2X — PSC Y1MC (construction of geothermal EPG facilities)

What this PSC covers

• Maintenance of geothermal energy production facilities, including routine, preventive, and corrective maintenance of plant systems.¹
• Plant mechanical systems maintenance (turbines, pumps, heat exchangers, piping systems).¹
• Electrical systems and distribution maintenance (switchgear, transformers, distribution systems).¹
• Instrumentation, controls, and monitoring systems maintenance (SCADA, sensors, control cabinets).¹
• Site utilities and ancillary infrastructure maintenance (access roads, drainage, non-process buildings) as related to geothermal operations.¹

Not specified by official sources.¹

Related NAICS and PSC codes

• The PSC Manual does not provide a mandatory PSC-to-NAICS crosswalk for every PSC; agencies typically select the NAICS that best represents the predominant work effort for an action. Not specified by official sources.¹

FPDS coding and reporting considerations

• PSC entry rule: the PSC is FPDS data element 8A and should reflect the predominant product or service purchased; environmental attributes are captured in FPDS data element 8L.²
• Maintenance vs. repair/alteration: Z1-family PSCs describe maintenance, while Z2-series PSCs cover repair or alteration—for example, Z2MC corresponds to geothermal repair/alteration; mixed-purpose contracts should be coded to the predominant purpose in FPDS element 8A.¹

Frequently asked questions

• Q: When should a procurement be coded Z1MC rather than a general facilities-maintenance PSC?
  A: Use Z1MC when the predominant work is maintenance specifically for geothermal energy production facilities and related systems; FPDS element 8A must record the predominant product or service for the action.¹

• Q: Does Z1MC include repair or alteration work to geothermal plants?
  A: Repair and alteration activities are generally assigned to the Z2MC code (Z2-series); if a contract mixes maintenance and alteration, code the action to whichever purpose is predominant.¹

• Q: Are environmental attributes tracked for Z1MC-coded actions?
  A: FPDS provides data element 8L to record environmental or recovered-material attributes (for example, energy-efficiency or environmentally preferable services); agencies should populate 8L when applicable during FPDS reporting.²

• Q: Which FPDS fields are most relevant when reporting a Z1MC action?
  A: Primary fields are data element 8A (Product or Service Code) for the PSC and 8L (Recovered Materials/Environmental Attributes) when environmental characteristics apply; report the predominant product/service and any applicable environmental attributes in FPDS.²

Useful resources

• G2X — PSC Z1MC
• Product and Service Code Manual (PSC Manual — April 2025 PDF).¹
• FPDS — Help and documentation.²

References

1. Acquisition.GOV — Product and Service Code Manual (PSC Manual — April 2025 PDF). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf

2. FPDS — Help and documentation. https://www.fpds.gov/help/index.jsp