Phil Sellwood, chief executive of the Energy Saving Trust, said: "Every time a gadget or appliance is needlessly left on standby, the energy used results in carbon dioxide being emitted into the atmosphere."
The research, Energy and Waste in the Age of Excess, shows that stereos left on stand-by account for £33m worth of energy wasted every year in the North West, while televisions and VCRs left on standby waste more than £30m worth of energy and produce almost 165,000 tonnes of carbon dioxide emissions.
It was also revealed that appliances, such as mobile phones and i-pods, are making huge contributions to the energy wasted in the region.
The Energy and Waste survey was conducted to coincide with a new campaign from the Energy Saving Trust. The Save Your 20% campaign looks at how to adopt energy-saving measures
For more information on the energy saving campaign, call 0800 915 7722 or visit the website at www.saveyour20percent.co.uk