Solterre Design is pleased to announce the Solterre Concept Cottage at 3 Pastures on Second Peninsula, Nova Scotia. This project brings together LEED for Homes Platinum Certification, the German based Passive House (Passivhaus) energy standard and the self-sufficiency of off-grid living. This ambitious house design combines the best aspects of Solterre’s twenty years of green design experience and provides a demonstration site for environmentally-sensitive architecture and green building products.
The Concept House also received a Lieutenant Governor Award of Merit for architectural design.
LEED for Homes Platinum Certification
The Solterre Concept Cottage received LEED Platinum , the highest certification level available from the Canadian Green Building Council (CaGBC) in June 2013. LEED for Homes Canada is a green home certification system for assuring homes are designed and built to be energy and resource-efficient and healthy for occupants.
Passive House Certification
In addition to LEED, the Concept Cottage is focusing on super energy efficiency by applying the German Passive House standard. Passive House (Passivhaus) is the world's most aggressive building energy conservation standard. It is achieved through a super insulated envelope, extreme air tightness, and very efficient heat recovery ventilation. The home uses 70-90% less energy than a typical home of the same size, including, the use of energy efficient appliances and lighting.
One of the great benefits of the Passive House (Passivhaus) standard is that with the super insulated envelope, the house will never drop below 15 degrees Celsius, even without a heating system. Passive solar energy, collected through the large south-facing windows keeps the house at a stable temperature and prevents the pipes from freezing, even if the house is unoccupied for long periods of time in the winter.
One of the greatest challenges for the Solterre team is to make this home off-grid. The home is not tied to the electrical grid, but instead supplies all of its electricity through a photovoltaic array. Primary heat is supplied by solar energy, both passive and active, and a small, high-efficiency wood fireplace. Solar thermal panels supply heat for hot water and secondary heating. Propane fuels the kitchen stove and acts as a supplementary backup fuel to the heat and hot water systems. A DC refrigerator and other Energy Star appliances are used, as every kilowatt of energy used must be produced on site. By using the most energy efficient lighting, appliances and equipment possible, and meeting the Passive House (Passivhaus) standard, the amount of photovoltaics needed is relatively small, making off-grid living an affordable option, while providing an exceptionally comfortable home.
Live Performance Data:
- All framing lumber is local
- Salvaged interior doors
- Salvaged kitchen cabinetry
- Expanded rigid foam insulation from Nova Scotia manufacturer
- Recycled newsprint insulation from Nova Scotia manufacturer
- Concrete floor using recycled glass aggregate from Nova Scotia recyclers
- Solar thermal panels from Nova Scotia manufacturer
- Solar electric panels supplying all of the house’s electrical needs
- Passive solar design with Canadian-made high performance fiberglass windows
- Thermal break insulation details
- Insulation Values R-30 sub slab, R55 wall, R100 roof
- High-efficiency appliances (DC and Energy Star)
- High-efficiency ERV system (energy recovery ventilation)
- LED lighting
- Low emission and high performance, EPA certified, wood stove
- Insulated thermal mass with slab-on-grade foundation
LANDSCAPE AND WATER
- Sod roof using traditional Faroe Islands technique
- Xeriscaping to ensure no potable water is used for landscaping
- Introduce Nova Scotia apple varieties to landscape
- Rainwater collection from metal roof to cistern for both interior and exterior use
- High-efficiency plumbing fixtures meeting LEED standard
- First use in Nova Scotia of recycled glass in septic bed