Hotel · Lighting
Lighting in hotel: what the SRI measures
For lighting, the SRI does not measure the lamp but the control: does the light switch off when nobody is there, and does it dim with daylight. This is often the cheapest domain to score points in.
In short
- 1This page shows how the Smart Readiness Indicator assesses the lighting domain in a hotel.
- 2In a hotel, lighting carries significant weight: the domain accounts for 2 out of 3 points available for this building type.
- 3The score depends on occupancy control per room and daylight-linked control in corridors and shared spaces.
Weight of this domain for this building type
Which services count
| Service | Lowest level | Highest level | Advice |
|---|---|---|---|
| Occupancy control for indoor lighting L-1a · A · 4 levels | Manual on/off switch | Automatic detection (manual on / dimmed or auto off) | level 2 or higher |
| Control artificial lighting power based on daylight levels L-2 · 5 levels | Manual (central) | Automatic dimming including scene-based light control (during time intervals, dynamic and adapted lighting scenes are set, for example, in terms of illuminance level, different correlated colour temperature (CCT) and the possibility to change the light distribution within the space according to e.g. design, human needs, visual tasks) | – |
Worked example
If everything in this domain is at level 0, the domain contributes nothing. At the highest level for all services, the indicative total score for this building type rises by about 4 percentage points (from 33 to 37 percent, with all other domains at level 1).
Why does lighting count so heavily in a hotel?
The Smart Readiness Indicator, abbreviated SRI, assigns a weighting factor to each domain per building type. For a hotel, the lighting domain receives a weight of 2 on a scale up to 3. This is high compared with other domains in this building type.
This weighting makes sense. Hotel rooms often stand empty, guests change nightly, and corridors and lobbies remain lit all day. Smart control of lighting therefore delivers relatively high savings at relatively low cost.
What exactly does the SRI measure in lighting?
The indicator does not assess the lamp type but the control behind it. Two smart-ready services are decisive here: occupancy control and daylight-linked regulation.
Occupancy control for artificial lighting (service L-1a) evaluates whether lights switch on or off automatically when a space is occupied or empty. The lowest level is a manual switch. The highest level in this service is automatic detection, where lights switch on or dim automatically and turn off automatically as soon as no one is present.
The second service, artificial light power adjustment based on daylight level (L-2), assesses whether artificial light follows incoming daylight. This ranges from manual operation per room, through automatic switching and automatic dimming, to the highest level: automatic dimming with scene-based light control. The system then adjusts light intensity and colour temperature according to time or use.
What does this mean specifically for a hotel?
In a hotel, room occupancy is often already known through the reservation system, as check-in and check-out are recorded there. This information can in theory be linked to lighting control in the room.
Corridors, stairwells and shared spaces typically have varying occupancy per hour. There, automatic occupancy detection combined with daylight control often delivers the largest step in functionality level.
Guests also expect individual light control in their room. This aligns with higher levels within service L-1a, where manual operation is combined with automatic switching off when absent.
What this means for you
- Owner
- As a hotel owner, it is worth first assessing which level of occupancy control and daylight-linked regulation already exists in rooms, corridors and shared spaces. Because lighting weighs heavily in the score here, relatively small measures, such as linking sensors to the reservation system, often produce a noticeable improvement in the SRI class.
- Tenant
- As a guest, you will mainly notice whether the light in your room switches on automatically when you enter and turns off when you leave, without you having to think about it. In corridors and shared spaces, you may notice that lighting follows the daylight entering through windows.
- Advisor
- When assessing, it is important to test each room type, room, corridor or lobby separately to determine at which level occupancy control and daylight-linked regulation actually function, as this can vary greatly between zones. Bear in mind that the lighting domain in this building type carries heavy weight, so underestimating the current level has a larger effect on the overall score than in other domains.
Next step
Want to know where your building stands?