Disclaimer: Carbon Modelling Methodology& Performance Assumptions
Carbon Modelling Methodology & Performance Assumptions
Green Homes’ carbon performance estimates for our Green Upgrade Packages are based on rigorous modelling that references the CSIRO Home Energy Rating Optimisation (HERO) framework, National Construction Code (NCC) energy efficiency requirements, and appliance lifecycle emissions data from the Australian Government’s National Greenhouse Accounts Factors.
Our carbon savings projections consider whole-of-life performance over 5, 10, and 30-year periods, accounting for embodied emissions, operational carbon intensity, and degradation curves of key technologies such as heat pumps, solar PV, batteries, induction cooking, and HVAC systems. This includes appliance-specific input data (Coefficient of Performance, standby load, degradation rates), climate zone adjustments (in line with NatHERS classifications), and projected decarbonisation of the Australian energy grid (referencing AEMO’s Integrated System Plan).
The modelling is conducted using a hybrid analytical approach incorporating parametric analysis, hourly energy demand simulation, and statistical lifecycle forecasting. Scenarios are stress-tested under variable occupant behaviour and weather conditions to ensure the validity of results across use cases.
It is important to note that while our modelling represents some of the most advanced and transparent available in the residential energy upgrade market, it is predictive in nature. Real-world performance may differ due to changes in energy tariffs, occupant usage patterns, technological updates, and grid dynamics.
However, the results clearly show—when benchmarked against legacy fossil-fuel systems—that Green Homes upgrades can deliver material reductions in operational carbon emissions. These findings are consistent with broader scientific consensus on the role of electrification, energy efficiency, and distributed generation in achieving net zero targets.