View “Todd’s Postereous Blog” to see a map of the world showing for each continent the area that needs to be covered with solar panels in order to meet all the world’s power needs. You might be surprised!
One of the most energy intensive (and therefore costly) processes in any house is the heating of water. Heating water accounts to about 37% – 40% of the annual energy consumption in an average Australian household and about 20% of its greenhouse emissions. Therefore it is important to consider all the alternatives, such as using the heat of the sun in solar hot water systems.