The Queensland government has allocated $5 billion in its latest budget to upgrade existing coal-fired power stations and construct new transmission lines.

The spending plan mirrors the state's investment approach from the previous fiscal year, maintaining a consistent trajectory for energy infrastructure development as the administration seeks a path back to budget surplus.

The funding is directed at extending the operational life of thermal assets while simultaneously expanding grid capacity.

This dual approach aims to balance immediate reliability concerns with longer-term network requirements.

The budget reflects a pragmatic stance on energy security, prioritizing incremental improvements to the existing fleet over a rapid shift to alternative generation sources.

Markets are assessing the implications of this sustained capital commitment.