The NSW opposition has unveiled plans for a Newcastle Urban Renewable Energy Zone as part of its renewable energy policy.
The Liberal-National Coalition says its energy plan will support families, back jobs and get NSW "back to the top of the pack".
It estimates the plan has the potential to unlock enough generation and storage capacity to power around 10 million homes, roughly equivalent to every household in Australia.
"A key part of that plan is delivering a more affordable, reliable and resilient energy system that puts downward pressure on power bills and supports economic growth," the Coalition's release said.
The centrepiece of the plan is the creation of Urban Renewable Energy Zones (REZs) across Sydney, Newcastle and Wollongong.
It said these Urban REZs would unlock the state's largest untapped energy resource by supporting industrial precincts, commercial buildings, apartment complexes and local communities, to better use solar and battery technology, generating and storing power closer to where it is consumed.
The Shadow Minister for Energy and Climate Change, James Griffin, said Urban REZs were about generating and storing more power near where people lived and businesses operated.
"Instead of relying solely on energy generated hundreds of kilometres away, we will unlock the enormous potential of industrial precincts, commercial buildings and apartment complexes across Sydney, Newcastle and Wollongong to produce, store and supply energy directly into the existing grid," Mr Griffin said.
"This is about making better use of the assets we already have. Thousands of warehouses, industrial sites, commercial buildings and apartment developments have the potential to become part of our energy network, generating power where it is needed most and reducing reliance on expensive new transmission infrastructure."
The scope and scale of the New England REZ, which is significantly over budget and behind schedule, will also be reviewed and revised.
The review will prioritise upgrades to existing transmission infrastructure and remove the need for the proposed 500kV transmission line corridor, which has been slammed by some conservation groups.
Member for Upper Hunter Dave Layzell said The New England REZ is a sinking ship of a project.
"There are no takers for future wind and solar projects in the New England area and the New England transmission project would have been left as a white elephant," he said.
"It is time to put an end to the lines on a map that are tormenting people's lives.
"The cost of this project has spiralled totally out of control, and the Minns Labor Government seems content to burden future generations with the enormous repayments.
"The business case for large scale renewable projects on our farmland has fallen through the floor due to the lack of community support.
"It is time to reset the pathway forward and make better use of the latest technology to encourage energy generation closer to locations where the power is required."
Leader of the Opposition Kellie Sloane said affordable and reliable energy was essential to a strong economy.
"A stronger economy requires affordable and reliable energy. If we want lower power bills, more jobs and greater economic resilience, we need to produce more energy, closer to where it is used," Ms Sloane said.
"Families cannot get ahead and businesses cannot grow if they are paying too much for power.
"NSW needs new generation and storage as coal retires, but the transition must be affordable, deliverable and undertaken in partnership with communities.
"Our plan is focused on energy security, economic resilience and lower costs for households and businesses."
Leader of the NSW Nationals Gurmesh Singh said that, under Labor, the state's energy roadmap was becoming more concentrated.
"The Liberals and Nationals support the energy transition, but it must be cheaper, better, fairer, and carried out in partnership with local communities," Mr Singh said.
"That means listening when legitimate concerns are raised and being prepared to adjust the plan."
