So far two of ten off-grid DC power systems have been arrived with the last planned for an early 2018 delivery.
The systems feature PV arrays, battery energy storage and control systems which are designed to provide protection along the 632km pipeline.
The remote location and the requirement for reliable and continuous power when there is no network access is a problem MPower says it experienced in solving.
Tag CEO Nathan Wise said that his company was known for its ability in providing high-reliability power solutions for critical applications.
"We have drawn on our vast experience in remote renewable power systems and integrated battery energy storage to design a sophisticated solution that meets the demanding requirements of the Northern Gas Pipeline," he said.
The Northern Gas Pipeline runs from the Northern Territory's Tennant Creek to Queensland's Mount Isa to deliver gas into the east coast markets.
This is another contract announcement for the infrastructure project after Civmec Group won large camp set up, site civil works, structural steel fabrication and structural, mechanical, piping, electrical and instrumentation installation contracts last month.
ASX-listed Tag is an investment house with a focus on niche areas of the power industry and has invested in a number of companies brought together to operate under the MPower banner.