The Internal lighting section of the ‘Code’ changed in November 2010. It is now part of the Dwelling Emission rate % improvement on the Target Emission Rate. The procedure accounts for energy used in space heating & cooling, hot water and fixed lighting. This is calculated using SAP 2009 version 9.90 using the compliance criteria set out in Part L1a 2010.

Space Lighting

Where all external space lighting, including lighting in common areas is provided by dedicated energy efficient fittings with appropriate control systems.

Security Lighting

Where all security lighting is designed for energy efficiency & is adequately controlled such that:

All burglar security lights have:

• A maximum wattage of 150w

And

• Movement detection control devices (PIR)                             

And

• Daylight cut off sensors

All other security lighting:

• is provided by dedicated energy efficient fittings

And

• Is fitted with daylight cut off sensors

Fittings should be dedicated and exceed 40 lumens/circuit watt.

Code for Sustainable Homes Technical Guide - Go to Catergory 1 Energy & Carbon Dioxide Emissions