Lighting plays a crucial yet often overlooked role in a building’s Energy Performance Certificate (EPC) rating. Modern lighting technologies such as LEDs and smart lighting controls not only reduce energy consumption but can contribute significantly to improving EPC outcomes. This article explores how lighting design impacts EPC assessments and why upgrading to efficient lighting is a simple yet effective strategy for enhancing your building’s energy profile.
For professional EPC assessments that consider advanced lighting upgrades, visit our Services page.
1. How EPC Assessments Evaluate Lighting Efficiency
In an EPC assessment, lighting efficiency is evaluated based on:
The proportion of fixed lighting outlets using low-energy light fittings.
The presence of automated controls (like motion sensors, timers, and daylight dimmers).
The type of bulbs used (incandescent, halogen, CFLs, or LEDs).
While lighting is just one aspect of the EPC calculation, it’s a low-cost upgrade that can tip the balance towards a higher rating, especially in properties hovering between EPC bands.
2. Why LEDs Are a Game-Changer for EPC Ratings
Switching to LED (Light Emitting Diode) lighting is one of the most cost-effective methods to improve a building’s energy efficiency. Key benefits include:
Energy Savings up to 80% compared to incandescent bulbs.
Longer Lifespan (25,000-50,000 hours), reducing maintenance and replacement needs.
Lower Heat Output, reducing cooling demands in summer.
Instant Full Brightness and compatibility with smart controls.
EPC assessments award higher scores to properties where 100% of fixed lighting outlets are fitted with low-energy light fittings like LEDs. You can book an EPC assessment to ensure these upgrades are fully recognised.
3. Role of Smart Lighting Controls in EPC
Beyond simply changing bulbs, smart lighting controls further enhance a building’s energy profile by ensuring lights are only used when needed. These include:
Occupancy Sensors: Automatically switch off lights in unoccupied rooms.
Daylight Sensors (Photocells): Adjust light levels based on natural light availability.
Time-Based Controls: Schedule lighting based on occupancy patterns.
App-Controlled Systems: Provide remote control and automation for optimal usage.
While current RdSAP EPC methodologies have limited granularity in recognising control types, commercial EPC assessments (using full SAP/DSM models) can factor in these energy savings.
4. EPC Impact: Domestic vs Commercial Properties
| Property Type | Lighting’s EPC Impact |
|---|---|
| Residential (RdSAP EPCs) | Recognises % of low-energy fixed outlets. |
| Commercial (Non-Domestic EPCs) | Factors in lighting efficiency, luminaire types, and control systems. |
For residential properties, reaching 100% LED coverage is key. For commercial buildings, integrating efficient luminaires with advanced controls is crucial.
If you’re unsure how your lighting upgrades will be reflected in your EPC, consult with our assessors via our Contact page.
5. Steps to Improve Your EPC Rating Through Lighting Upgrades
Audit Existing Lighting: Identify all fixed outlets and bulb types.
Switch to LEDs: Ensure 100% of fixed lighting is LED or equivalent.
Install Smart Controls: Prioritise high-usage areas like hallways, kitchens, and commercial zones.
Document Upgrades: Provide proof of installation or specifications to your EPC assessor.
Book an EPC Reassessment: Use our Booking page to ensure upgrades are evaluated correctly.
6. Lighting Upgrades: Cost vs EPC Benefit
| Upgrade | Cost Range | EPC Impact |
|---|---|---|
| Full LED Conversion (Domestic) | £200 – £500 | 2-5 EPC points |
| Smart Occupancy Sensors | £50 – £150 per room | Up to 10% lighting energy reduction |
| Commercial Smart Control Systems | £1,000+ | Significant EPC uplift |
Given the relatively low cost of LEDs and the immediate EPC benefits, lighting upgrades offer one of the best ROI interventions for landlords, homeowners, and commercial property owners.
Our Pricing page offers transparent fees for EPC assessments that include lighting efficiency checks.
7. Common Mistakes to Avoid
Partial LED Upgrades: EPCs only consider the proportion of fixed outlets fitted with low-energy lights; incomplete upgrades offer limited benefits.
Ignoring Smart Controls in EPC Documentation: Ensure your assessor is informed and provided with evidence.
Overlooking External Lighting: Fixed external lighting is also assessed, especially in commercial EPCs.
Our expert assessors ensure no detail is missed during your evaluation. Learn about our thorough process on the About Us page.
Conclusion
Upgrading to LED lighting and implementing smart control systems is one of the most cost-effective ways to improve your EPC rating. While lighting might seem like a minor factor, it plays a pivotal role in overall energy efficiency, especially in properties aiming for higher EPC bands.
At EPCrate, we provide comprehensive assessments that fully account for your lighting efficiency upgrades. To maximise your property’s EPC rating, schedule an assessment through our Booking page or reach out via our Contact page.
