Lighting controls in Gwynedd
Lighting controls switch or dim lights automatically based on occupancy, daylight or time. We cover Gwynedd, including Bangor, Aberdovey and Aberffraw.

Lighting controls work in Gwynedd
In Gwynedd buildings, the quickest control savings usually come from presence detection in rooms that are used for only part of the day.
Daylight dimming works best in premises around Gwynedd with deep window bays or roof lights.
What's included
- Daylight-linked dimming along windows and under roof lights
- Timeclocks and photocells for external lighting
- Retrofit wireless controls where rewiring is impractical
- DALI and DALI-2 systems with scenes and zoning
Guide prices in Gwynedd
Typical budgets for Gwynedd, supplied and installed, excluding VAT. Your fixed price follows a free survey.
| Item | Guide budget (ex VAT) | Basis |
|---|---|---|
| Presence (PIR) sensor | £40 – £80 | per sensor, installed |
| Daylight sensor | £60 – £115 | per sensor, installed |
| DALI dimming and control | £50 – £145 | per luminaire, on top of the fitting |
| Commercial electrician | £290 – £485 | per day |
Example: presence and daylight sensing for 40 existing LED panels, about £680 – £1,350 excluding VAT.
Rules that apply in Gwynedd
The Welsh Approved Document L Volume 2 (2022) uses 95 luminaire lumens per circuit-watt for general lighting, with alternatives such as LENI. A new Welsh edition takes effect from 4 March 2027 with a higher figure of more than 105.
Towns we cover in Gwynedd
- Bangor
- Aberdovey
- Aberffraw
- Amlwch
- Arthog
- Bala
- Barmouth
- Beaumaris
- Bodorgan
- Brithdir
- Bryncrug
- Buan
- Criccieth
- Dolbenmaen
- Dyffryn Ardudwy
- Ffestiniog
- Harlech
- Llanbadrig
- Llanbedr
- Llandygai
- Llaneugrad
- Llanfair-Mathafarn-Eithaf
- Llanfihangel Ysgeifiog
- Llangefni
- Llangelynin
- Llanllyfni
- Llannerch-Y-Medd
- Llanrug
- Moelfre
- Penrhyndeudraeth
- Pentraeth
- Penysarn
- Porthmadog
- Rhosneigr
- Rhosybol
- Talsarnau
- Valley
- Y Felinheli
Lighting controls FAQs for Gwynedd
How are prices set in Gwynedd?
Our guide prices are adjusted for regional labour costs. After a survey you get a fixed price for the agreed scope.
Which fire safety law applies in Gwynedd?
The Regulatory Reform (Fire Safety) Order 2005 sets the duties of the person responsible for fire safety, including emergency lighting where escape routes need it.
What is DALI?
DALI is a digital lighting control standard that lets each fitting be addressed, dimmed and grouped individually, with scenes and fault reporting.
What do sensors cost?
As a budget, a basic presence sensor costs about £40–£80 installed, a daylight sensor £60–£120, and DALI control around £50–£150 per luminaire on top of the fitting, excluding VAT.