Iridescent Solar-Thermal Panels Give This €2.85M French Chalet Its Shine

by Grace Bernard

Designed by Patrice Mottini, the experimental ’80s home features a Trombe wall that captures warmth from the sun for heating.

Location: Menthon-Saint-Bernard, France

Price: €2,850,000 (Approximately $3,330,595 USD)

Architect: Patrice Mottini

Year: 1980

Footprint: 2,985 Square Feet (3 Beds, 6 Baths)

Lot Size: 0.8 Acres

From the Agent: "This family home enjoys unobstructed views of Lake Annecy and the surrounding mountains. A manifesto work designed by architect Patrice Mottini in 1980, it creates a dialogue between the vernacular architecture of wood and tiles typical of alpine chalets and innovative solar-thermal design. Spread over four levels, the home is composed of distinct, modular volumes—‘duplex’ units—that offer intimate retreats within a family home. Adjacent to the house, an outbuilding includes a workshop and parking space for three cars. The south-facing home maximizes sunlight through a Trombe wall—a passive solar heating system developed by CNRS researcher Félix Trombe and architect Jacques Michel in the 1950s. This ingenious device captures and stores solar heat behind a glass panel, then redistributes it inside the house via a system of vents. Beyond its thermal advantages, the iridescent aesthetic of this facade blends perfectly with the site and the dark wood cladding of the rest of the house. The design thus adopts and reinterprets the vocabulary of the chalet while incorporating a sustainable and original technical process. Inside, the living spaces are spacious and offer great flexibility in layout. In every corner of the house, the duplex units frame views of nature and ensure each family member has their own independent and peaceful space."

Designed by Patrice Mottini, the experimental ’80s home features a Trombe wall that captures warmth from the sun for heating.

Designed by Patrice Mottini, the experimental ’80s home features a Trombe wall that captures warmth from the sun for heating.

Photo by Filip Dujardin - Architecture de Collection

Photo by Filip Dujardin - Architecture de Collection

Photo by Filip Dujardin - Architecture de Collection

In addition to the main home, the property also has a separate garage and a work shed.

In addition to the main home, the property also includes a separate garage and a shed.

Photo by Filip Dujardin - Architecture de Collection

In addition to the main home, the property also has a separate garage and workspace.

In addition to the main home, the property also has a separate garage and workspace.

Photo by Filip Dujardin - Architecture de Collection

The ground floor features a fitted kitchen, a living and dining room, and an entrance to the first of four "duplexes."

The ground floor features a kitchen, a living area, and a dining room and an entrance to the first of four duplexes, which function like private wings.

Photo by Filip Dujardin - Architecture de Collection

The duplexes are distributed across the three levels of the home.

The duplexes are distributed across the three levels of the home. 

Photo by Filip Dujardin - Architecture de Collection

Purple carpeting, red door frames, and a turquoise pool table complete the lively game room.

Purple carpeting, red door frames, and a turquoise pool table complete the lively game room.

Photo by Filip Dujardin - Architecture de Collection

Purple carpeting, red door frames, and a turquoise pool table complete the lively game room.

Purple carpeting, red door frames, and a turquoise pool table complete the lively game room.

Photo by Filip Dujardin - Architecture de Collection

Photo by Filip Dujardin - Architecture de Collection

Each of the four "duplexes

Each of the four duplexes has a flexible living/sleeping space and a bathroom.

Photo by Filip Dujardin - Architecture de Collection

The wood, brick, and tile interior is a grounding contrast to the iridescent exterior.

The wood, brick, and tile interiors are a warm complement to the iridescent exterior. 

Photo by Filip Dujardin - Architecture de Collection

Photo by Filip Dujardin - Architecture de Collection

Photo by Filip Dujardin - Architecture de Collection

Chris Robertson

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