The Retailer Energy Efficiency Scheme (REES) is an energy efficiency scheme which commenced on 1 January 2015. The REES builds on the Residential Energy Efficiency Scheme, which operated from 2009 to 2014. Under the REES, most energy retailers in South Australia will be required to provide incentives for South Australian households and businesses to achieve energy savings to potentially lower their energy bills.
Energy retailers that exceed certain thresholds are set annual targets for the delivery of energy efficiency activities to households and/or businesses. In addition, retailers with larger residential customer bases are set targets for ensuring that a certain amount of the energy efficiency activities they deliver go to low-income households; and providing energy audits to low-income households.
The South Australian Government announced REES in February 2008. On 21 August 2008, Regulations were made under the Electricity Act 1996 and Gas Act 1997 giving effect to the REES, with REES commencing from January 2009. The current Regulations expire on 31 December 2020.