No, modern ones are much more efficient.
ENERGY-EFFICIENT just took the quiz (apex)
A pellet stove is a form of wood burning stove except more efficient.
The best model of electric stove depends on what you are looking for in an electric stove. Some are more energy efficient and will save you money in the long run but might cost more to obtain.
Same as a modern one. Thay are no more energy effecient.
It depends on what you're cooking. If you're cooking small it will be more efficient to cook in the microwave. If you cook a large frozen item, the electric stove is probably the better bet.
Gas ovens are generally more efficient with energy consumption.
New air conditionings are more energy efficient as well as quieter than old models
An electric skillet will use more energy than cooking with gas. This is because the electric skillet needs time to heat to the right temperature. The gas stove is already putting out heat. Gas is normally cheaper per unit than electricity.
To read more about energy efficient air conditioners, go to wikipedia and look up Energy star. This will give you information on how and why a unit will be more energy efficient and "green".
All modern televisions have energy saving features that make them more efficient than their predecessors. It is always worth checking the data on new models to find the most energy efficient models that have the features you are looking for.
with a stove or a grill or more
I would assume it means that the more efficient it is, the less energy it intakes and the more efficient the system is at retaining the energy it intakes.