Home Energy Incentives
The Residential Energy Efficiency Scheme (REES) is designed to assist households achieve greenhouse gas reductions.

http://www.escosa.sa.gov.au/consumer-information/residential-energy-efficiency-scheme.aspx

Solar Hot Water Rebate
Concession card holders who install a new solar water heater or a new electric heat pump water heater may be eligible for a $500 solar hot water rebate from the South Australian Government.

http://www.sa.gov.au/subject/Water%2C+energy+and+environment/Energy/Energy+rebates%2C+concessions+and+incentives/Efficient+water+heater+rebates+and+incentives/South+Australian+solar+hot+water+rebate