Gemini house

Gemini house is a rotating solar house in Weiz with a cylindrical design and about 150 square meters of photovoltaic panels covering its exterior. The building itself turns to follow the sun while the panels adjust separately, working together to capture maximum sunlight throughout the day.

Roland Mosl developed the concept in 1991, which then led to this prototype being built in Weiz for a national energy exhibition held in 2001. The project represented a significant step in exploring experimental housing approaches in Austria.

This house has become a symbol of sustainable living in Austria, showing that homes can generate power rather than just consume it. Visitors can observe how technology integrates into daily life without dominating the space or how people think about shelter.

Access to this house is limited since it is a private residence that operates on restricted visiting hours or by prior arrangement. It is best to inquire in advance about visiting opportunities and plan accordingly.

This was Austria's first energy-plus house and generates more electricity than its residents actually use throughout the year. Advanced thermal insulation and heat recovery systems work alongside the solar panels to achieve this surplus production.

Location: Weiz

Inception: 2001

GPS coordinates: 47.21918,15.62520

Latest update: December 14, 2025 14:26