Net Zero Energy Homes
Three homes designed to approach or achieve Net Zero Energy consumption are complete in the Belgravia neighbourhood in Edmonton.
The homes have all been sold. They are located at 11536-74 Ave, Edmonton. Take the showhome virtual tour.
The project affectionately referred to as Belgravia Green is a collaboration between home owners, local experts and Effect Home Builders. Together they are pushing the envelope to design and build Net Zero homes that produce as much energy throughout the year as they consume.
3 Homes in Belgravia Green Net Zero Energy Project
Close up of Belgravia Green Net Zero Energy Show Home
Technology in the Three Belgravia Green Homes:
Advanced wall systems
Different wall systems combined with various technologies are being used to demonstrate diverse methods to achieve Net Zero energy consumption.
The showhome and neighbouring home to the West will feature a 12" EnerGard Wall System made with engineered wood and expanded polystyrene which achieve an insulation value of R-42. These walls are structural engineered wood columns coated with Pink Wood, a non-toxic coating which make the columns fire resistant, water resistant, and mould-free.
The neighbouring home to the East is being constructed using 16” Double stud wood frame achieving an insulation value of R-56.
All three foundations will be constructed using the Advantage ICF System with an additional interior wall for extra insulation. The result is a foundation with an R-40 insulation value.
Triple pane windows from All Weather Windows containing two coats of low e film, argon gas filled glazing with insulating spacers between panes will be installed.
Solar-electric systems located on all three homes will generate electricity to supply their own electricity needs, and sell the excess to local utilities on any sunny second in time.
South facing windows will allow the sun's warmth to be absorbed by the structural concrete floor in the showhome. Hambro floor joists will provide support for this structural concrete floor which will be used as a thermal mass for storage and distribution of passive solar energy.
Passive Solar in Belgravia Green Net Zero Energy Show Home
Expanded polystyrene (EPS) will be used under basement concrete slabs. EPS is also part of the Plastifab Advantage Insulating Concrete Form, and in the Nascor advanced wall. EPS is non-toxic, CFC-free, mould-free, and provides a stable insulating value (will not diminish with age).
Cellulose will be blown into the double stud wood framed walls and attics. It is densely packed in the walls to avoid settling. Cellulose is made predominantly from post-consumer recycled paper.
Each Belgravia Green home will have a completely different heating system.
One home will be heated with a geothermal (ground source heat pump) system to be installed by Threshold Energies. This requires a slightly higher initial investment but runs at approximately 250% efficiency.
Electric baseboard heating
Electric baseboard heaters will heat another home, are 100% efficient and require a low initial investment.
Air-source heat pump
The showhome will be heated with an air source heat pump which is a specially designed heat pump for cold weather climates. Efficiencies range from 100%-400% depending on outdoor temperature.
High efficient Heat Recovery Ventilators (HRV) will be installed in each of the homes. These units provide fresh air by exchanging stale indoor air with fresh outdoor air. The incoming air is pre-heated by the exhausting air, recovering up to 88% of the heat. Electrical usage is low due to an Electronically Commutated Motor (ECM) in the HRV.