The Cooperative Research Centre for Low Carbon Living (CRCLCL) research project Mainstreaming Net Zero Energy Housing aims to improve industry understanding of Net Zero Energy Homes (NZEH) while addressing cost and consumer interest barriers. The project also provides a unique opportunity to increase collaboration between industry players such as land developers and volume builders.
Based on energy modelling conducted in the design review process and retail costings provided by the builders, initial installation costs and annual savings were calculated. The costing analysis was then conducted across a 25-year lifespan, aligning with previous research on high performance buildings, as well as placing the analysis over a similar time period to a standard mortgage. The analysis used energy prices for each of the four case study locations and accounted for maintenance and replacement costs of appliances. Analysis was conducted across five different electricity market scenarios including increased electricity prices, continuation of feed-in tariffs, and elimination of feed-in tariffs.
The key findings are:
Solar PV and Heat Pump or Evacuated Tube hot water systems are the two most cost effective upgrades across all case studies. Both of these upgrades show payback within 10 years at current energy prices.
Thermal shell upgrades provide effective and meaningful cost reductions, however increased installation costs compared to the standard house design pushes payback beyond 10 years. In most cases, given the extended lifespan of the thermal shell, these savings outweigh the costs over the 15 year analysis period.
NPV of NZEH upgrades is positive under energy price increase scenarios.
Industry misconceptions around high cost and poor market interest in energy efficient homes continue to obstruct the mass adoption of low carbon housing. Josh’s House demonstrates that low carbon housing is accessible and cost effective. The Star Performers series showcases how...Read more
A rapid review on green-rated office buildings, and their operational energy use, found that the conclusions of six studies ranged from the certified buildings performing worse, similarly or much better than the non-certified buildings in terms of energy usage intensity. Two...Read more
In response to feedback, high-income households can reduce their energy use to a larger degree than low-income households (17% vs 3% reduction). This and other insights were gained by two rapid reviews into research, both Australian and International, on digital services and...Read more
The Cooperative Research Centre for Low Carbon Living (CRC LCL) research project Mainstreaming Net Zero Energy Housing aims to improve industry understanding of Net Zero Energy Homes (NZEH) while addressing cost and consumer interest barriers. The project also provides a unique opportunity to increase collaboration between industry players such as land developers and volume builders.
This Getting to Zero Status Report (the Status Report) offers building owners, tenants, design teams, contractors, and policymakers a summary of NZE commercial and multifamily buildings data in New York and how trends across the State compare with the national landscape.
Energy transition of the EU building stock, from being an energy waster to being highly energy efficient and an energy producer, is a prerequisite for Europe’s carbon neutrality, as well as for meeting Europe’s Sustainable Development Goals (SDGs). Achieving these targets requires shifting the emerging energy renovation market from a market of step-by-step and shallow energy renovation financed by grants to a market of industrialized and holistic energy renovation leading to zero energy buildings financed by long-term loans.