For our stakeholders, the returns of investing in good management are reflected in improved building performance, lower outgoing costs and greater market appeal.

As a manager of large commercial office towers, our primary environmental impacts relate to energy, water and gas use, carbon emissions and waste across the portfolio. Investa reports regularly on our performance in these key areas and our latest performance data can be viewed below. 
Greenhouse emissions
Greenhouse Emission Intensity
 

in Greenhouse Emissions
Intensity
Emissions from Stationary Energy

The emissions intensity of the Investa portfolio has reduced again, for the twelfth consecutive year. In FY16, the average greenhouse gas emissions intensity of portfolio properties reduced from 74 kg.CO2-e/m2 to 72 kg.CO2-e/m2, a reduction of 3% for the year and 56% since 2004.

 
Greenhouse Gas Emissions Intensity Trend
kg CO2-e/sqm
Year
Electricity & Gas
Electricity Intensity
 
in
Electricity Intensity

The electricity usage intensity of the Investa portfolio has reduced again this year. In FY16, the average electricity intensity of portfolio properties reduced to 77 kWh/m2, a reduction of over 43% since 2004. In 2016, the intensity of natural gas use in the Investa portfolio properties was 86 MJ/m2, a reduction of 38% since 2004.

At the same time, the portfolio’s weighted average NABERS Energy rating has increased to 4.65 Stars not including GreenPower and during the year 10 buildings improved their NABERS Energy rating. 

Read more about our performance in our latest sustainability report.

Electricity Intensity Trend
kWh/sqm
Year
Natural Gas Intensity
 
in
Natural Gas Intensity
Gas Intensity Trend
MJ/sqm
Year
Water
Water Intensity
 
in
Water Intensity

In FY16, Investa commercial office properties reduced their average water use intensity to 615L/m2 a reduction of 5% over the year and 47% since 2004. 

Read more about our performance in our latest sustainability report.

Water Intensity Trend
L/sqm
Year
Pollution & Waste
General Office Waste Collected and Recycled
43 %
General Office Waste
Collected & Recycled
Waste from general commercial operations and which is primarily collected from tenancies, is referred to as 'Office Operational Waste'. Waste resulting from refurbishments, tenancy interior fit-outs and other projects is referred to as 'Construction & Demolition Waste'. 

In FY16, Investa commercial office properties recycled 43% of office operational waste and  87% of construction and demolition waste.

Investa is working to reduce the proportion of waste leaving our buildings that goes to landfill alongside the City of Sydney's Better Building Partnership's Waste Technical Working Group. 

Read more about our performance in our latest sustainability report.