Australia's major project development and contracting group Leighton Holdings (ASX: LEI) has secured a five-year $100m contract with Queensland's electricity provider, Ergon Energy.

Under the deal, Leighton subsidiary Thiess Services will provide "network construction and maintenance services" to Queensland's growing central and northern regions

This recent contract win extends the long standing relationship between Ergon Energy and Thiess Services, the Sydney-based company said in a statement released today.

Thiess managing director David Saxelby said Ergon Energy was a key strategic client and his company was excited about the opportunity to expand its service offering to these growth regions.

"I am delighted we have the opportunity to build on our solid, six year relationship with Ergon Energy and are keen to work more closely with them to deliver their vision of providing increased services to these regional communities" he said.

Thiess Services, which has a national electricity distribution capability, is ready for the new challenge, according to Thiess Services executive general manager Michael Wright.

"This contract will enable us to expand our presence in regional Queensland, and extend our current service offering. We will continue to provide the high standards of safety and service delivery that we have been able to achieve and sustain,"

"Overall, we're excited about this opportunity with Ergon Energy to help make a difference for regional people and their communities in Queensland, during this period of regional growth and development."