La lampadina a LED consuma meno energia della vecchia lampadina a incandescenza.

The LED bulb uses less energy than the old incandescent bulb.

Breakdown of La lampadina a LED consuma meno energia della vecchia lampadina a incandescenza.

• vecchio: old
• meno: less
• l'energia: the energy
• della: of the
• la lampadina a LED: the LED bulb
• consumare: to consume
• la lampadina a incandescenza: the incandescent bulb

Questions & Answers about La lampadina a LED consuma meno energia della vecchia lampadina a incandescenza.

Why is a used before LED and incandescenza instead of another preposition?

In Italian, when you specify the type or technology of something (especially lamps), you typically use a to mean “with” or “of.”

• lampadina a LED = “lightbulb with LED technology”
• lampadina a incandescenza = “lightbulb with incandescent technology”
  You might hear con LED, but a LED and a incandescenza are the standard, idiomatic forms.

What does della mean in della vecchia lampadina a incandescenza? Why not just di la?

della is the contraction of di + la. In comparisons of inequality with nouns, you form:
meno + noun₁ + di + noun₂
If noun₂ takes a definite article (here la vecchia lampadina), you contract di + la = della.
So:
consuma meno energia + di + la vecchia lampadina → consuma meno energia della vecchia lampadina

Why is there no article before energia when we say meno energia?

When you quantify something with meno (or più) followed directly by a noun, you usually omit the article before that noun. You’d say:
meno energia (less energy)
If you did use an article, it’d change the nuance or sound unnatural here.

Why is the adjective vecchia placed before lampadina? Aren’t most Italian adjectives after the noun?

Italian adjectives can appear either before or after the noun. Placing vecchia before lampadina:

• Emphasizes its “oldness” as an inherent quality
• Sounds more natural in a contrast (new LED vs. old incandescent)
  You could also say lampadina vecchia a incandescenza, but it feels less direct in this comparative context.

Why is the verb consuma in third person singular?

The subject of the sentence is La lampadina a LED (singular). In the present indicative, you match the verb to a third person singular subject, giving you:
consuma (not “consumano”)

Why is LED written in uppercase?

LED is an acronym for light-emitting diode borrowed from English. In Italian it’s common to keep the original uppercase form, though you may also see Led in some texts. Both are understood.

Could I say consuma meno elettricità instead of meno energia?

Yes. elettricità (electricity) is more specific, while energia (energy) is more general. Both are grammatically correct:

• consuma meno energia
• consuma meno elettricità
  Use whichever nuance you prefer.

Are there alternative ways to make this comparison besides meno … della?

Absolutely. You can say:

• rispetto a:
  La lampadina a LED consuma meno energia rispetto alla lampadina a incandescenza.
• di without contraction if you drop the article (less common here):
  consuma meno energia di lampadine incandescenti (plural, no article).
  But meno … della is the most straightforward for a direct, specific comparison.