PM

Court delays and a police crackdown on certain offences are thought to be behind a huge spike in Indigenous incarceration in New South Wales. Between 2013 and 2016, the Indigenous imprisonment rate in New South Wales grew by 25 per cent.

Water testing techology that finds DNA in water can be used to test Tasmanian Tiger sightings. It takes a litre of water and matches it to a data base of thousands of animals and the Thylacine's DNA is in the catalogue.

The Queensland Government is defending its role in electricity pricing, amid allegations the state owned generators have been gaming the system. Federal Government analysis of the states' energy markets finds wholesale prices have been 30 per cent higher in Queensland. Josh Frydenberg blames the State Labor Government, but it says Queensland consumers are still paying less than other juridstictions where electricity is run by private operators.

There's a push to create a national Islamic studies syllabus for Islamic schools, to address the needs of Muslim students. Education experts are in Adelaide to discuss renewing the current teaching and learning at the estimated 60 Islamic schools across Australia. They want to introduce a model which works in tandem with the standard national curriculum, and empowers students to become confident young Australian Muslims.

The Northern Territory Government's alcohol review of policy and legislation is currently underway. Among the groups to suggest changes to the way alcohol is managed is the Royal Australasian College of Physicians, who say teenagers shouldn't have access to alcohol.

The Slovakian athlete who beat Australian walker Jared Tallent to the gold in last year's Rio Olympic games is being investigated for doping. Matej Toth has been provisionally suspended for alleged anti-doping breaches in the Olympic 50 kilometre walk. It's the second time an Olympic racewalking event that Tallent's come second in has been called into question.

On Business PM tonight: Cheaper power to the people - the solar energy trading revolution that allows home owners to cut out the big companies.

A consortium involving Tesla boss Elon Musk will deliver the 'world's largest' lithium ion battery to secure South Australia's power. Tesla, French renewable energy company Neoen, and the South Australian Government have teamed up to install the giant battery in the state's mid-north. Billionaire Musk has again committed to deliver the battery within 100 days, or provide it for free. The group says it will deliver stability services to the grid and emergency back-up power if needed.

The shadow minister for climate change and energy, Mark Butler, is also an MP from South Australia. PM asked him if this battery will provide the stability the system needs.

For his reaction to these latest developments, the Minister for Environment and Energy, Josh Frydenberg, joined PM a short time ago. He says he welcomes the announcement of the delivery of the 'world's largest' lithium ion battery to help secure South Australia's power grid, but thinks it must be put in perspective and will not solve all the state's energy problems.