Under the agreement, Origin Energy will supply electricity to around 2500 State Government sites and 1500 Local Council sites.
The sites will also have the option of purchasing a proportion of their electricity as green power (including GreenEarth Plus - a 100% wind energy product).
"The awarding of this major electricity contract builds on Origin's existing relationship to State Government sites through the supply of natural gas," said Peter Vines Origin's executive general manager of retail.
"Origin has been a supplier of natural gas to South Australia for the past 140 years, and we supply more than one million customers with electricity nationally."
