Construction is ramping up on a contentious infrastructure project deemed essential to advancing Australia's shift to renewable energy.

HumeLink, a $4.8 billion overhead transmission line in southern NSW, is designed to strengthen the capability of the National Electricity Market and connect the Snowy Hydro Scheme expansion.

The project has drawn fierce criticism from farmers, local communities, and environmental groups that oppose its route through prime farmland and national parks.

It is expected to unlock the full capacity of Snowy 2.0, delivering 2200MW of on-demand energy into the grid - enough energy to power up to three million homes for a week.

Transgrid Group chief executive Brett Redman said the 395km transmission line was a major step forward in delivering sustainable, affor

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