# Operational Energy 3.5 Internal Lighting - Houses and Townhouses
# Applies to
Houses and townhouses
# Objective
Ensure the efficient use of energy, to reduce energy consumption, greenhouse emissions associated with artificial lighting, and to reduce energy peak demand.
# Summary
Points are awarded when the maximum illumination power density is 4W/sqm or less, which represents a 20% improvement on the current NCC requirements.
# Documentation & evidence required
Provide information about the lighting type(s) to be used to achieve 4W/sqm