Did you know that electric element type hot water systems can be responsible for around 2 tonnes of greenhouse gases a year?! To become more energy efficient:
Install a solar hot water system
Install AAA rated shower heads to lower the amount of water you use, and the hot water that needs heating.
Lower the thermostat on your hot water system to around 50 degrees to optimise efficiency.
Spend less time in the shower.
Use cold water to wash your clothes.
Insulate the hot water pipes throughout your home.