Greens Beach Solarhome 2018

Greens Beach Solarhome
Greens Beach TAS 7270
Full address will be displayed on 05 Sep 2019
10am – 4pm
House Open Style
Open House – No booking required
Housing Type
Display Home
Project Type
New Build
David Macfarlane Design
Rob Miller
House Size
Number of bedrooms
Number of bathrooms

Possibly the world’s first actual zero-emission house. 100% off-grid, 100% electric, no wood fire or gas for heating & cooking, and no backup generator.

The aim was to design an affordable, high-quality house that would not only minimise operational energy consumption (allowing it to be powered entirely by solar-charged batteries with no need of a generator or grid backup), but also withstand the ravages of time and harsh weather (including severe storms and bushfires), age gracefully with little maintenance, and never go out of fashion, to create a stylish modern home that is durable, practical and comfortable in most climates, using standard building materials and conventional construction techniques, so that it can be easily built just about anywhere in the world.

Greens Beach Solarhome is the prototype of this concept, which was built in Tasmania in order to test its performance in a challenging climate. After more than 12 months’ trial it has exceeded expectations, remaining warm (around 20°C), comfortable and emission-free throughout a cold Tasmanian winter, and cool (less than 25°C) during the hottest summer days, while operating seamlessly, totally on solar-charged batteries with no grid connection, no generator backup, and no gas, oil, coal or wood fire for heating or cooking. It uses an average of less than 10kWh per day, which is significantly less than the theoretical primary energy demand required for German Passivhaus certification. The house is currently available on and Airbnb so that visitors can try it for themselves.

To find out more about Solarhome project, click here.

To find out more about the NatHERS (Nationwide House Energy Rating Scheme) click here.


Cost estimate of sustainable home/features
Total cost of home when constructed
Estimate of annual savings
Universal Design Features
80cm minimum door opening width
BAL Rating
BAL – 29: Increasing levels of ember attack and ignition of debris with a heat flux of up to 29kW/m2
Roofing materials
Concrete slab
Wall materials (external and internal)
Concrete blocks
Window and door types
Triple glazing
Sustainable materials
Materials are selected to have the longest, maintenance-free life possible – focused on 'life cycle' rather than 'embodied' energy. The house, essentially, has a concrete outer shell that could potentially last hundreds of years.
Insulation - Ceiling
Type: Bulk – glass wool
Rating: R9.6
Insulation - Internal walls
Type: Bulk – polystyrene board
Rating: R8.7
Insulation - Under floor
Type: Bulk – polystyrene board
Rating: R9.1
Healthy home
Airtight house design
Low VOC paints/sealer/varnish
Natural fibre furnishings
Natural light and ventilation
Natural oil sealer/finishes
Energy star rating type
Energy star rating
9.2 Stars
All electric home
Renewable energy
Energy storage/battery
Solar PV off-grid
Water heating
Hot water heat pump
Passive heating cooling
Passive solar designed home
Active heating cooling
Heat pump
Energy efficiency
Draught proofing
Efficient lighting
Efficient appliances
Energy monitoring
Water harvesting and saving
Blackwater system