CBD Program Statistics
We provide both current and older statistical summaries and overviews relating to the CBD program.
CBD Second Year of Mandatory Disclosure - Nov 2012 - Nov 2013
View the statistical overview of the second year of mandatory disclosure under the CBD program. A summary of the statistics is included below.
Buildings and Building Energy Efficiency Certificates (BEECs)
Larger office buildings are more likely to have better energy efficiency ratings.
In the second year of full mandatory disclosure from 1 November 2012 to 1 November 2013 the Commercial Building Disclosure (CBD) Program issued 1,081 BEECs (Building Energy Efficiency Certificates). Most building owners and tenants generally acquire a BEEC for the period of sale, lease and/or sublease negotiations and prefer not to re-new after negotiations have been finalised. However, there has been a growing portion in the market that keep BEECs in place without lapse – rolling BEEC. Some owners have stated that a rolling BEEC provides them with greater flexibility. In this second year, 862 buildings were covered with a BEEC, 175 of these issued with more than one BEEC. The average National Australian Built Environment Rating System (NABERS) Energy for Offices rating recorded across 1,081 BEECs was 3.03 Stars.
When the NABERS rating is graphed against rated Net-Lettable-Area (NLA) of the buildings, the shape of the curve shifts and the largest bar in the graph is for buildings with 4.5 stars. This is due to larger buildings generally having higher NABERS ratings. The total rated area (NABERS NLA) of the 874 buildings was 13.4 million m² (graph below).
Tenancy Lighting Assessments (TLAs) and Nominal Lighting Power Density (NLPD)
Nearly a third of office space still has poor lighting energy efficiency.
1,106 Tenancy Lighting Assessments (TLAs) were used as part of 1,081 BEECs certified (this count including the same TLA being used multiple times across multiple BEECs). The number of unique (indicating that regardless of how many times it was used, the TLA was only counted once) TLAs certified was 981. 15,725 functional spaces made up the 981 unique TLAs – representing 12.8 million m2 of space – with an average Nominal Lighting Power Density (NLPD) of 13.34 W/m2 recorded in assessed spaces.
The TLA assesses the lighting of a functional space, this efficiency is measured as NLPD expressed as watts per square metre (W/m2) of energy which would be used for full operation of the installed lighting layout. The pie chart below illustrates the total TLA area assessed (m2) per NLPD rating band from 1 November 2012 to 1 November 2013. NLPD rating bands are a 4 point scale that records the NLPD assessment result. While 21.5% by area were rated ‘Excellent’ there was still 32.2% rated as ‘Poor’.
- CBD First Year Statistical Overview Nov 2011- Nov 2012 - this is the first year of mandatory disclosure statistical overview of the CBD Program since full disclosure started on 1 November 2011