Ceramic Cups vs Paper Cups

Many coffee chains all over the world are now offering price breaks if customers bring ceramic coffee cups instead of using the stores own paper cups.

Most are lauded for their commitment to "going green" but is there any proof that these changes will have the desired effect and minimise our negative effect on the earth?

Research from the early 1990s suggests that each time you clean a mug in the dishwasher, it takes about as much energy - and would probably produce as many emissions - as it takes simply to produce a new paper cup!

Gains in dishwasher efficiency since then may have changed the math a little, but if you wash your ceramic cup after every use, you could easily be talking hundreds of cups of coffee before your mug makes more sense than a daily dose of paper. Cleaning the mug by hand may not absolve you, either - although you can help your case by using cold water and be sparse with the fairy - detergents are pretty energy-intensive to make.

The argument is worse when you compare Ceramic Mugs with Plastic Glasses

Reverting to china would be an ethical no brainer were it not for a seminal piece of academic analysis in the early Nineties by Dr Martin Hocking, Reusable and Disposable Cups: an Energy-Based Evaluation. He concluded you'd need to use your ceramic Cup 1,006 times for it to break even (in energy terms) with its polystyrene competitor. This is largely because kilns are extraordinarily energy intensive, because using a dishwasher to wash the cup also uses energy, and because cups get broken. Plastic cups also had a reasonably good recycling infrastructure in place: the UK's Save a Cup programme saveacup.co.uk still collects millions of plastic glasses from vending machines.

It seems whether an individual or massive coffee house you cannot win sometimes, whatever we do we seem to leave rubbish, create more waste, or anger some groups with our actions. Who actually considers all of the above when all you actually want is a Mocha Frappuccino, and quick?