Hola! Greetings from Spain! I'm at a preview of Europe's largest consumer electronics show, IFA, (September 2-7 in Berlin). A dozen companies showed their wares, which included some appliances designed to minimize both electricity and water usage. When will they be coming to the U.S.? Hopefully soon.
Here's a dishwasher that uses half the water than most dishwashers – seven liters (nearly two gallons) compared to the usual 10-15 liters. How? It stores the agua (Spanish for water, I've discovered) from the last rinse cycle of one load then uses it for the first wash cycle of the next load. Genius, right? It also has a third tray for cutlery or espresso cups and saucers. It costs around 1,000 euro in Europe – about $1,500. Bosch hopes to have a U.S. version soon.