{"id":1550,"date":"2024-05-06T11:05:40","date_gmt":"2024-05-06T03:05:40","guid":{"rendered":"https:\/\/buenoanalytics.com\/case-study\/dexus-case-study-copy\/"},"modified":"2025-12-12T15:59:52","modified_gmt":"2025-12-12T04:59:52","slug":"investa-259-queen-street-case-study","status":"publish","type":"case-study","link":"https:\/\/buenoanalytics.com\/us\/case-study\/investa-259-queen-street-case-study\/","title":{"rendered":"Investa | NABERS | Case Study"},"content":{"rendered":"
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Investa \u2013 Lifting a Premium Asset from 5.0 to 5.5 Stars with Strategic Optimization\n<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Investa<\/a> is one of Australia\u2019s leading commercial property groups, known for its focus on sustainability, data-driven operations, and portfolio-wide performance. At 259 Queen Street in Brisbane\u2014a premium commercial asset with a strong NABERS track record\u2014Investa partnered with Bueno to take an already 5.0-star NABERS Energy rating even higher<\/strong>.<\/p>

The goal was to push the building\u2019s performance to 5.5 stars<\/strong>, enhancing its market appeal, reducing operating costs, and strengthening its value as a government-leasable asset. Through advanced analytics and targeted optimization, Investa aimed to demonstrate that even high-performing buildings can go further\u2014with measurable benefits for owners, tenants, and sustainability outcomes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The Challenge \u2013 Outperforming during extreme cooling demand\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In 2024, Queensland experienced a 30% increase in Cooling Degree Days (CDD)<\/strong> compared to the previous year, placing additional stress on HVAC systems across many buildings. While most assets in the region saw a spike in energy consumption over summer, Investa and Bueno worked to reverse the trend<\/strong> at 259 Queen Street\u2014balancing emissions reduction with high tenant comfort expectations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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The Journey Begins \u2013 Targeted fault insights and collaborative optimization<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Bueno\u2019s Performance Services team worked closely with site staff to identify and resolve inefficiencies using high-integrity fault detection and analytics. The focus was on isolating mechanical system drift, correcting sensor\/control logic issues, and optimizing setpoints and runtimes across critical systems:<\/p>

  • Chilled Water System<\/strong>
    Overshooting issues from Chiller 1 were resolved by replacing faulty sensors and adjusting control logic.
    Savings:<\/em> 11,500 kWh \/ ~$2,300 annually<\/p><\/li>

  • Tenant Condenser Water System<\/strong>
    Installation of VSDs and pressure control logic upgrades.
    Savings:<\/em> 70,000 kWh \/ ~$11,000 annually
    NABERS impact:<\/em> +0.04 stars<\/p><\/li>

  • Cooling Tower Systems<\/strong>
    Fan logic and temperature resets improved performance outside operating hours.
    Savings:<\/em> 96,000 kWh \/ ~$16,500 annually<\/p><\/li>

  • Zone Temperature Control<\/strong>
    Lockouts applied to heating coils, tenant AC setpoints adjusted.
    Savings:<\/em> 17,500 kWh \/ ~$3,500 annually<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    The Results \u2013 Lifting performance while reducing summer load<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Even in one of Queensland\u2019s hottest recorded summers, 259 Queen Street recorded a 4.5% energy reduction<\/strong>, outperforming market norms. The combination of strategic fault detection, targeted system improvements, and close site engagement delivered:<\/p>

    • Total electricity reduction (summer):<\/strong> 187,000 kWh<\/p><\/li>

    • Annualized site action savings:<\/strong> 195,000 kWh \/ ~$33,300<\/p><\/li>

    • NABERS uplift:<\/strong> Now tracking at 5.57 Stars<\/p><\/li>

    • Thermal comfort:<\/strong> Maintained at 93%<\/p><\/li><\/ul>

      These results highlight the ability to lift performance in high-grade buildings through detailed optimization, even under seasonal pressure.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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      Next Steps \u2013 From high performance to sustained leadership\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Investa\u2019s success at 259 Queen Street shows what\u2019s possible when building analytics and operational expertize align behind a common goal. Moving from 5.0 to 5.5 stars not only improves environmental outcomes\u2014it adds leasing flexibility, cost savings, and asset value.<\/p>

      With Bueno continuing to support optimization efforts across its broader portfolio, Investa remains well-positioned to meet evolving standards, sustainability targets, and tenant expectations in a competitive commercial market.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

      Investa partnered with Bueno to lift 259 Queen Street from 5.0 to 5.5 NABERS stars, cutting energy use, maintaining comfort, and strengthening long-term asset performance.<\/p>","protected":false},"featured_media":1553,"template":"","segment":[121],"class_list":["post-1550","case-study","type-case-study","status-publish","has-post-thumbnail","hentry","segment-commercial"],"_links":{"self":[{"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/case-study\/1550"}],"collection":[{"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/case-study"}],"about":[{"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/types\/case-study"}],"version-history":[{"count":0,"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/case-study\/1550\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/media\/1553"}],"wp:attachment":[{"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/media?parent=1550"}],"wp:term":[{"taxonomy":"segment","embeddable":true,"href":"https:\/\/buenoanalytics.com\/us\/wp-json\/wp\/v2\/segment?post=1550"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}