Lighting may seem like a minor component in a building’s energy usage, but it can have a significant impact on Energy Performance Certificate (EPC) ratings. With advances in lighting technology, energy-efficient lighting is now a key factor in improving a property’s overall energy efficiency score.
The Role of Lighting in EPC Ratings
EPC assessments evaluate total energy consumption in a property, including heating, cooling, and electricity use. Lighting contributes to this consumption, and inefficient systems can increase predicted energy use, which lowers the EPC rating.
Key aspects considered include:
Type of lighting: LED, fluorescent, or incandescent bulbs
Lighting controls: Timers, motion sensors, and dimmers
Number and placement of fittings: Over-lighting increases energy demand
How Efficient Lighting Boosts EPC Performance
1. Reduced Electricity Demand
Energy-efficient lighting consumes less electricity for the same illumination level. This directly reduces a property’s overall energy consumption, which is favourable in EPC calculations.
Example: Replacing incandescent bulbs with LED fittings can cut lighting energy use by up to 80%.
2. Smart Controls and Automation
Integrating motion sensors, daylight sensors, or timers optimises energy use by ensuring lights are only on when needed.
EPC benefit: Reduces predicted annual energy consumption, potentially improving the EPC rating.
3. Daylighting Integration
Maximising natural light through windows, roof windows, or skylights can reduce reliance on artificial lighting.
EPC consideration: Properties with higher natural daylight availability often show improved lighting efficiency scores.
4. Reduced Heat Load
Traditional incandescent lighting generates heat, which can increase cooling demand in warmer months. Energy-efficient lighting minimizes this unwanted heat gain.
EPC impact: Lower cooling energy needs contribute positively to overall energy performance.
Practical Tips for Optimising Lighting Efficiency
Upgrade to LEDs – Long-lasting and low-energy consumption.
Install motion or occupancy sensors – Especially in less frequently used rooms.
Use daylight harvesting – Combine natural light with artificial lighting controls.
Regular maintenance – Clean fittings and replace aging bulbs to maintain efficiency.
Plan lighting layout carefully – Avoid over-lighting or unnecessary fixtures.
Learn More About Improving EPC Ratings
For guidance on enhancing energy efficiency through lighting and other measures, explore Urgent EPC services:
Contact Us for a consultation
About Us to understand our EPC process
Conclusion
Lighting efficiency may be one of the easiest ways to improve a property’s EPC rating. By upgrading to LED systems, implementing smart controls, and maximising natural daylight, homeowners and landlords can reduce energy consumption, enhance comfort, and achieve higher EPC scores.
