On the market there are various types of bulbs with different characteristics, let's see which ones light bulbs choose to get a energy saving.
Energy saving light bulbs, the rules
You will surely know the incandescent bulbs, the traditional ones, with the thread inside that lights up. From 1 September 2010 it was forbidden to sell it for those with a power greater than 75 watts. From 1 September 2011 the ban extended to 60 watt lamps. From 1 September 2012 it was then the turn of lamps with power between 25 and 40 watts. And in the near future? From 1 September 2016, the ban will be extended to low-efficiency halogen lamps.
Energy saving light bulbs, fluorescent bulbs
Fluorescent light bulbs have a brightness emitted by a fluorescent material and, therefore, not by an ionized gas as in neon. Their use allows up to 80% energy savings and can be found in different models:
compact spiral and stick, they are able to concentrate the maximum brightness in the minimum volume. They are available in different lengths and are suitable for chandeliers, appliques and abat-jours;
compact circular, they are indicated to avoid shaded corners, therefore, for the bathroom, kitchen, laboratory etc.
compact globe, resemble traditional light bulbs, are less expensive but are also the ones that take longer to reach maximum brightness.
Energy saving light bulbs, halogen bulbs
Low consumption halogen bulbs consist of one or more glass tubes containing mercury vapors, with electrodes at the ends. They are more expensive than the old halogen bulbs but consumption is very low and they also have greater brightness: therefore, they are suitable for living rooms, dining rooms and bedrooms.
Energy saving light bulbs, led lamps
Led lamps and spotlights allow for strong energy savings, last up to 100,000 hours and do not produce heat. The only drawback is that the spotlights diffuse the light in beams so it takes a lot of them, oriented in different ways, to illuminate a room. Therefore they are suitable for shop windows, aquariums, countertops, gardens, walk-in closets and, in general, for those places where lighting that heats up is not required.