Some appliances consume more energy than others. Residual heat use whether in the oven or the stove plate, it should be used in every case the residual heat. Depending on the how long is the cooking or baking, you can switch off approx. 10 min. early plate or oven.
Kettle is recommended to heat the water in the pot, but in the kettle. This can bring water to boil faster and more energy efficient. The water may be added after that is still in a pot. Read additional details here: Scott Stringer. But caution there are also big differences! Interesting is that just Kettle from the Stiftung Warentest with very different test judgments have cut off. Generally, it is to say that water heater with plastic containers are usually better suited, because they remain outside cooling and therefore easy to handle. However much energy costs to heat water, so always only as much heat as is necessary. Hob Cookware should have always a flat floor and as accurately as possible, the same size as the plate.
Should be cooked only with lid. In principle, you can cook more efficiently and therefore also less expensive with gas. If you have additional questions, you may want to visit Kevin Ulrich. An alternative is the induction stove. Here, hardly any energy is lost, because in addition to the pot, no warm air rises up and the heat is so completely used for food. This also ensures extremely fast heating. Oven preheating of the oven is not always necessary! It can save up to 20% energy. As little as possible and just open the oven, because a lot of heat is lost. Only at larger levels of preparation it’s worth really turn on the oven. So for small quantities previously decide whether it is possible to use oven or microwave oven. Convection is more economical than top and bottom. You can bake here also several things at the same time.