Solar Hot Water | Sun Lizard Solar Room Heater Many people in Australia have discovered the benefits of using solar hot water systems. We are blessed with sunshine and in Queensland the average home can have more than 80% of its hot water needs provided by the sun. In a grid connected home this can save up to 3 to 4.5 tonnes of Greenhouse gas production a year. Click here for more solar hot water info. The energy from the sun can be used for more than providing electricity, hot water and life on earth. With good home design, some solar passive thinking, and a Sun Lizard on your roof you can heat or cool your home as well.