The Solarhome Project was established with the aim of creating a design of a stylish, affordable house that is so energy-efficient that it can be powered entirely by an off-grid solar-charged battery without the need of a generator or grid backup. Tamar Solarhome is the prototype of this design, which was built in Tasmania (during 2016) to test its performance in a challenging climate. This was an idea developed by entrepreneur/building designer David Macfarlane, who spent two years researching and developing the design, then a further six months building the prototype at Greens Beach before living in the house for almost a year to test its comfort and performance. The house has now operated faultlessly through all seasons for more than three years.  It was completed in early 2017 and is available for short term holiday rental.