Under a worst-case scenario, it will take Engie 35 years to fill the Hazelwood coal mine pit with water, but the company is aiming to do it over 10 to 20 years, new documents show.
Proposed new environment legislation for NSW would allow former directors to be held accountable, increase penalties, strengthen controls on contaminated land, and boost the EPA's independence.
The Queensland government is considering using its environmental licensing regime to require resource companies to cut emissions, and is also canvassing views on establishing an independent EPA.
A company that has directors including professor Ross Garnaut is proposing a "negative emissions" waste to biochar demonstration plant using municipal and forestry waste as feedstock.
The backers of the giant Star of the South offshore wind project have told a Senate inquiry it needs a first-stage licence by mid-2022, in order to generate soon after the Yallourn power station closes.
Environment Minister Sussan Ley says she considered a climate change duty of care owed to young people when deciding to approve a Whitehaven coal project.
The NSW Court of Appeal has rejected arguments by a coal company that it was unlawfully refused consent for a mine because of invalid concerns about scope 3 emissions.
Renewables company Neoen has made four EPBC referrals for its Goyder South hybrid energy project, but has cautioned that full deployment is not yet commercially viable.