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NABERS Sustainable Portfolios Index 2020
Great environmental outcomes are forged through a combination of commitment and action. The NABERS Sustainable Portfolios Index (SPI) celebrates the top 40 property portfolios achieving measurable sustainability actions in Australia.
The NABERS SPI provides comparative business intelligence on where property portfolios stand against their peers and provides a complement to popular ESG indicators for investors. The NABERS SPI showcases all the property portfolios who are making the sustainability improvements promised in their policy documents.
The 2020 index includes new features:
- Sort data based on rank, NABERS Star result or number of assets rated, and more
- Performance over time
- Portfolio deep dive
- Portfolio view on Waste and Indoor Environment achievements
NABERS is proud to share these incredible sustainability results and showcase the achievements of these portfolios.
What’s the definition of a portfolio in this report?
A portfolio consists of two or more buildings with NABERS ratings owned by the same company. These buildings must have the same rating type (for example, Energy or Water) and be the same building type (for example, Offices or Shopping Centres).
How have the verified portfolio ratings been calculated?
To calculate Office Energy or Water results for portfolios, we considered the portfolio’s ownership share of each building, along with the star rating and size (NLA) of individual buildings. These factors were then used in the ‘weighted average’ calculation to ensure that individual buildings have an appropriate contribution to the final Portfolio Rating.
The percentage of an office portfolio rated is calculated using ‘Rated NLA’ for rated offices and ‘Total NLA’ for unrated assets.
To calculate Shopping Centre Energy or Water results for portfolios, we considered the portfolio’s ownership share of each centre, along with the star rating and size (GLAR) of individual centres. These factors were then used in the ‘weighted average’ calculation to ensure that individual centres have an appropriate contribution to the final Portfolio Rating.
The percentage of shopping centre portfolio rated is calculated using ‘Rated GLAR’ for rated assets and ‘Total GLAR’ for unrated assets.
What about portfolios with mixed asset types i.e. Offices and Shopping Centres?
In the report we’ve separated out Offices and Shopping Centre ratings – even if those ratings belong to the same portfolio. This is because these two sectors are inherently different and cannot be compared or grouped together.
Energy ratings for office buildings are mandatory for all premises with NLA > 1000m2. This has resulted in a much higher average star rating for office buildings than shopping centres where all ratings undertaken are still voluntary and not always completed on an annual basis.
Does the report include whole building ratings, base building ratings or both?
The report includes both. The majority of ratings in the report are base building ratings. However, Property NSW’s portfolio rating is the only portfolio comprised solely of whole building ratings.
Does the portfolio report include ALL companies with portfolio ratings?
No. In February 2020 we invited all portfolios who have rated with NABERS to participate in the report. 16 individual companies have made their results public in the report.
Why does the NABERS Sustainable Portfolios Report use ratings from two different dates?
The report is based on certified ratings current at the end of financial year 2019 (FY19) or the end of calendar year 2019 (CY19). All portfolio ratings are valid for 12 months.
How often will the report be produced?
The report will be produced every year.
How can my company take part in the next report?
Email Nichola.Nicholson [at] environment.nsw.gov.au (subject: Portfolio%20Rating) (Nichola Nicholson) for more information.
Where can I find more information?
See the Portfolio Ruling for full details on the methodology behind each calculation.