A “wake up and smell the coffee” article in The Times of London reminds us of some truths about energy we use to get us up and running every day. The article covers physicist David MacKay squaring off against the IEA as he knocks flat misconceptions about our gadgets and the widely-believed good done for the climate.
The Times of London article is one of many to review a new e-book by MacKay, physicist at Cambridge University. As written, take-home message from the article is that appliances left plugged-in are perhaps the least of our worries.. For example: your phone charger “consumes only 0.01kWh a day”, and switching off your phone charger for a day saves as much energy the same as a hot bath, or driving an average car for one second. Going farther above and beyond cars and chargers, What about planes? MacKay calculates a roundtrip flight from London to Cape Town uses “nearly as much as the energy used driving an average car 50km a day, every day, all year.”
These are only light-weight soundbites. The article carries the right message – don’t lose sleep at night if you left your coffeemaker plugged in all day, but definitely don’t feel satisfied if that is your good deed for the day – there are much bigger appliances to fry. Read the rest of this entry →