Fuel sources high on carbon such as coal and natural gas supply to over 60% of the electricity available worldwide. Although nuclear, hydro, wind and solar are relatively cleaner sources of power, the technique of getting them is too costly for the typical American. As a substitute, Marcus Hiles endorses the smart and limited use of lights, refrigeration, entertainment and cleaning appliances. By merely using compact fluorescent lights instead of incandescent light bulbs, energy consumption for these appliances can be reduced to 80%. Furthermore, new light emitting diodes (LED) are even better choices. Fridges and freezers can be made to work better by not setting them too cold, making sure they are appropriately sealed, are well defrosted, and positioned in the coolest part possible. Likewise, televisions, computers, phones and other technology should be switched off and unplugged when not in use, as the energy usage even on standby mode can be significantly high. Laundry machines and dishwashers usually have very high wattage although it can be difficult to decrease their usage because of their high utility in everyday life. Nevertheless, by selecting the coldest temperature available and by only washing full loads reductions in energy consumption can be surely made.