PSC Z1MG

Overview

The Product Service Code (PSC) system is the federal government’s standardized taxonomy for classifying goods and services purchased through federal contracting; PSCs are used in FPDS/SAM reporting and acquisition analytics, and the PSC Manual on Acquisition.gov documents PSC categories and usage guidance. ¹

The PSC Z1MG is listed in the PSC Manual as “Maintenance of EPG Facilities - Solar,” identifying maintenance activities associated with energy-production generation (EPG) solar facilities. The Manual provides the official code title; specific statement-of-work scope, performance requirements, and applicable NAICS are determined by individual solicitations and contracting officers. ¹

What this PSC covers

• Preventive and corrective maintenance of solar photovoltaic arrays and balance-of-system components. ¹
• Inspection and testing of inverters, combiner boxes, switchgear, and monitoring systems. ¹
• Panel cleaning, mounting and rafter hardware checks, and site vegetation control related to solar operations. ¹
• Replacement of worn or failed solar modules and associated electrical components. ¹
• Performance monitoring, data collection, and reporting to support system availability. ¹

Related NAICS and PSC codes

Type	Code	Descriptor
PSC	Y1MG	Construction of EPG facilities - solar
PSC	Z2MG	Repair or Alteration of EPG facilities - solar
PSC	Z1MZ	Maintenance of EPG facilities - Other, including transmission

Source: PSC Manual / PSC listing. ²

Scope and classification notes

• The PSC Manual publishes code titles and category placement; it does not prescribe detailed line-item technical requirements or exact deliverables for Z1MG. Not specified by official sources ¹.
• NAICS selection for actions that use Z1MG depends on how an agency frames how the work will be performed; possible NAICS associations are provided in the PSC spreadsheet maintained on Acquisition.gov. ²

Frequently asked questions

• Q: What does the Z1MG label require in a solicitation?
  A: Z1MG signals maintenance of solar EPG facilities; the solicitation or task order must define specific maintenance tasks, performance standards, deliverables, and inspection/acceptance criteria. The PSC Manual supplies the code title only. ¹

• Q: Which NAICS should be listed with Z1MG actions?
  A: There is no single mandatory NAICS for Z1MG. Contracting officers assign the NAICS that best describes how the work will be performed; the official PSC spreadsheet lists possible NAICS associations. ²

• Q: Are Z1MG actions reported in FPDS?
  A: Yes. Agencies report PSCs, including Z1MG, in FPDS when recording contract actions; FPDS records and agency solicitations show how the code has been applied in practice. ¹

• Q: Does Z1MG cover transmission or distribution work for solar installations?
  A: Z1MG denotes maintenance of solar EPG facilities; related transmission work may fall under other PSCs such as Z1MZ and should be specified in the solicitation. ¹

• Q: Is there a distinct PSC for solar construction versus maintenance?
  A: Yes. Construction of solar EPG facilities uses Y1MG; maintenance actions use Z1MG or related repair/alteration PSCs such as Z2MG. ¹

See also on G2X:

• PSC Z1MG overview
• PSC Y1MG (construction counterpart)
• PSC Z2MG (repair/alteration counterpart)

Useful resources

• G2X — PSC Z1MG overview (unnumbered): https://app.g2xchange.com/psc/Z1MG
• Product and Service Code Manual (Acquisition.gov). ¹
• PSC April 2025 spreadsheet (Acquisition.gov) — official PSC listing and possible NAICS associations. ²

References

1. Product and Service Code Manual (Acquisition.gov). https://www.acquisition.gov/psc-manual
2. PSC April 2025 spreadsheet (Acquisition.gov). https://www.acquisition.gov/content/psc-april-2025.xlsx