Challenge:
Improving Performance in a Complex Property Precinct
Property managers overseeing large, multi-site commercial portfolios face the constant challenge of balancing tenant comfort and sustainability with building performance and compliance targets. This is especially true at Auckland’s Harbour Grounds precinct, comprising seven waterfront office buildings totaling over 88,000 sqm and accommodating around 7,000 people. Here, assets of varying vintages and systems are managed for a high-profile workforce and discerning tenants. Growing expectations around energy ratings (notably NABERSNZ), operating cost control, and carbon emissions reductions placed increasing pressure on owners and managers to find robust, scalable solutions that could enable ongoing improvement and innovation – without compromising amenity or staff wellbeing.
Action
To meet these challenges, the owners of Harbour Grounds, with Bayleys as property manager, partnered with BraveGen in 2014. Their approach included:
- Deploying advanced monitoring equipment and integrating with existing building sensors to collect real-time data on electricity, gas, and water consumption across all seven precinct buildings.
- Implementing BraveGen’s cloud-based analytics platform for automated, continuous capture and advanced analysis of sub-metered energy data—enabling the accurate benchmarking of usage and identification of specific savings opportunities.
- Correlating operational data (such as occupancy, hours of use, and heating/cooling needs) to add critical context to energy consumption patterns and inform actionable insights.
- Engaging BraveGen’s specialist engineers to validate, analyse, and interpret the data—resulting in targeted interventions like building management system (BMS) optimisation, lighting upgrades, and HVAC improvements.
- Setting clear performance goals around NABERSNZ ratings, with a roadmap to 5.5 stars, supporting ambitions to offer “high-quality, energy-efficient office space” for tenants.
- Delivering detailed, actionable reporting to building managers and owners, enabling data-driven decisions and fostering a culture of sustainability among tenants.
Impact
The sustained partnership between Harbour Grounds and BraveGen has delivered significant, measurable results:
- Over $3 million saved in operational costs for tenants since 2014—representing up to 32% reduction in energy costs across the portfolio.
- 20 GWh in energy savings achieved—enough to power approximately 3,225 households.
- 2,700 tonnes of CO₂-e avoided, putting the precinct on track to meet and exceed carbon reduction targets.
- Continually improving NABERSNZ ratings: multiple buildings at 4+ stars, with one building on track for a 5.5 star rating.
- Award-winning outcomes: Recognised as the EECA 2018 Energy and Emissions Reduction Project of the Year.
- Enhanced tenant and staff experience: tangible improvements in office air quality, thermal comfort, and workplace amenity, driving greater wellbeing and staff engagement in ongoing sustainability efforts.
- Culture shift: Increased awareness and participation in sustainability initiatives among tenants, supported by transparent reporting and visible building performance gains.
The success at Harbour Grounds illustrates how integrated monitoring, advanced analytics, and specialist expertise empower property managers to unlock ongoing energy, cost, and carbon savings—while elevating workplace experience for tenants and staff.