Energy Star rates refrigerators, freezers, water coolers, water heaters and dish washers.
So if you saved a lovely ancient stove from a landfill and bought the rest new you would be getting the biggest of the energy hogs of the kitchen taken care of; that's the refrigerator for electricity and the dishwasher for water.
- That being said, old gas ranges are lit with a pilot light and that is eating up gas as well as being dangerous.
- Old electric stoves aren't efficient or any fun at all to cook on.
- Leave the electric burner top on and lean against it and woosh, you are on fire.
Might I suggest a range that looks oldish, like a Blue Star or Wolf. Blue Stars are lovely and you can order them in a ton of different colors, which will remind you of old enamel stoves, but you will be using a safe, efficient modern appliance made in the USA.
The refrigerator you can hide with a cabinet front and there are many sinks out there that look old but are new.
For more information:
Read "Are old appliances green because we are reusing, or not green because they are not Energy Star?" a Q&A answered by David Bergman.