Skip to main content

Case studies

Case studies offer insight into implemented technologies, methodologies, research, or practices, and provide an overview of real-life results, outcomes, lessons learned, and best practices.

Filter by date
Themes
Authors
Case studies (189)
The image shows a modern skyscraper with the “BTN” logo at the top, surrounded by other tall buildings in an urban area. In the foreground, there are green spaces and a road running alongside the complex.
Menara 2 BTN: energy efficiency in a tropical climate

Menara 2 BTN cuts its energy consumption by more than 21% compared to the national standard, thanks to LED lighting, optimised air-conditioning systems, and efficient water management, proving that sustainability in tropical climates is achievable.

Editorial team
The image shows the inner façade of a renovated house clad in natural-toned wooden panels. Through a large glass door, a modern living room is visible, featuring sofas and colourful hanging lamps that add a vibrant touch to the space.
A 1900s house as a model of energy efficiency

With an annual energy consumption of just 4 kWh/m², the energy retrofit of ShowPass proves that comfort, urban aesthetics and decarbonisation can go hand in hand in Mediterranean settings.

Editorial team
The image shows a three-storey building with a dark brick façade, large horizontal windows, and a colourful mural on one corner. The main entrance displays the text “LE PHÉNIX 3500”, while the top bears the name “lemay”, indicating it is Lemay’s headquarters. The urban setting includes pavements, trees, and a traffic-lighted intersection.
Energy-saving rehabilitation with 30% reduction

Rehabilitating with a combination of air-to-water heat pumps, a passive solar wall, and 375 photovoltaic panels with storage can achieve a 30% reduction in the energy bill. A hybrid ventilation system and optimised envelope enable a final consumption of just 120 kWh/m²/year.

Editorial team
The image shows a group of two-storey buildings with white roofs, set on a large plot surrounded by greenery. In the foreground, there are several palm trees, and in the background, smaller structures are aligned on a paved area.
Eco-friendly housing in the Colombian Caribbean

Guacamayas, located in Puerto Madero (Cartagena), is a terraced housing project designed to Passivhaus standards. It optimises thermal comfort in a tropical climate, reduces energy consumption by up to 90%, and integrates renewable solutions and sustainable materials.

Editorial team
La imagen muestra la Villa Ayantam, una residencia de diseño moderno y elegante. La construcción de dos plantas destaca por sus líneas limpias, grandes ventanales y una estética contemporánea. En el exterior, se aprecia una zona de estar con una hoguera circular, rodeada de vegetación cuidada. Al fondo, se divisan montañas, lo que refuerza el carácter exclusivo y natural del entorno. El conjunto transmite serenidad, confort y sofisticación.
Villa Ayantam, referencia en sostenibilidad residencial

Villa Ayantam, en Marbella, Málaga, se convierte en referente de sostenibilidad residencial al lograr la máxima puntuación BREEAM en España. Su sistema de ventilación Siber y su diseño bioclimático marcan un hito en eficiencia energética y confort.

Editorial team
The image depicts Mõisavahe 67, a multi-storey residential block in Tartu. The building has a rectangular form with numerous windows and two visible entrances. Its exterior shows signs of ageing, and several cars are parked in front, indicating active residential use.
Sustainable retrofit case: Mõisavahe 67

This case study explores the comprehensive renovation of Mõisavahe 67, a social housing block in Tartu, Estonia. The project aims to enhance energy efficiency, resident wellbeing, and sustainability, serving as a model for future urban regeneration.

Editorial team
220_22_imm01_cover
First pilot Enerphit certification for units: a retrofit in Bergamo

Bergamo’s EnerPHit pilot for a single flat is centred on scalability and cost-effectiveness. Meticulous craftsmanship and thorough insulation validation were essential, while inventive measures to eliminate thermal bridges and ensure airtightness have been successfully implemented.

Zephir and Passive House Institute
The image features the silhouette of a house on the left-hand side and an energy efficiency rating scale on the right. The scale comprises seven levels, labelled from A to G, with A in green and G in red, set against a yellow-green gradient background with grass at the bottom.
De l’étiquette G à C: Un exemple réussi de rénovation

Découvrez comment une famille a transformé une maison à faible performance énergétique en un logement confortable et durable, grâce à l’accompagnement de France Rénov’. Un exemple emblématique de rénovation qui illustre l’impact des politiques publiques sur la transition énergétique.

Editorial team
Showing 10 of 189 case studies