Light bulb: kWh per 1000 h
Electricity the light source uses in 1000 hours switched on, in kilowatt-hours. A 5 W LED lamp prints 5.
- What it looks like on the label
- A number followed by kWh/1000h under the A–G scale of a lamp or LED label, which is small and has no other icons.
- Printed on
- Light bulb
- Unit
- kWh per 1000 h
- Regulation
- Regulation (EU) 2019/2015, Annex III
Where the regulations differ
The unit is the same as on TV labels, but a TV’s figure comes from a video test; a light source’s is its on-mode power at full load, which is why the number equals the wattage.
What the regulation says
On a light bulb label
- What the number measures
- On-mode energy over 1000 hours.
- Unit
- kWh per 1000 h
- Test condition
- on-mode power at full load with lighting-control and non-lighting parts disconnected (or switched off), × 1000 h.
Regulation (EU) 2019/2015, Annex III, point 1.3 (IV): the energy consumption, expressed in kWh of electricity consumption per 1 000 hours, of the light source in on-mode;
Checked 2026-09-25.
Other icons on the light bulb label
Sources
- Regulation (EU) 2019/2015 — Commission Delegated Regulation (EU) 2019/2015 of 11 March 2019 supplementing Regulation (EU) 2017/1369 with regard to energy labelling of light sources. Label content: Annex III. Article 10: “It shall apply from 1 September 2021.” Amended by Delegated Regulation (EU) 2021/340 (among other things the minimum label sizes); the label points quoted here are unchanged by it. Checked 2026-09-25.
Read in the Official Journal text on the date shown. Our drawing is not the official pictogram; the regulation’s own label figure is the authority.