Quanta Services Australia Pty Ltd (QSA), a wholly-owned subsidiary of Quanta Inc., provides specialty infrastructure services. QSA comprises seven standalone operating companies.

This includes EPC contractor Nacap Australia Pty Ltd, which services the LNG, oil, gas and mining sectors; and Enscope specialising in the EPC and commissioning of service facilities.

In the power divisions, Consolidated Power Projects Pty Ltd, and Quanta Power provide end to end solutions in design, construction and maintenance services.
The QSA family also includes Mitchell Water Australia, which specialises in HDPE pipeline construction.

QSA companies compete for work in their own fields. When broader project opportunities arise, the standalone operating units will combine their offering to provide a bundled solution as part of an integrated QSA team.

This provides clients with powerful choices of delivery models and construction driven solutions that are almost entirely self-performed by experienced professionals.