Incorporating Energy Efficiency and Sustainable Energy Practices in the Renovation and Retrofitting of a 50-Year-Old Independent House  

Sudha Setty

Melyoura, Bangalore, India,
Corresponding Author:

Yoshita Sriram

Krushi Builders, Bangalore, India

Cite this article

Setty, S., Sriram, Y. (2024). Incorporating Energy Efficiency and Sustainable Energy Practices in the Renovation and Retrofitting of a 50-Year-Old Independent House. In Proceedings of Energise 2023- Lifestyle, Energy Efficiency, and Climate Action, pp 57–63, Alliance for an Energy Efficient Economy.


  • Incorporating Energy Efficiency in retrofitting of a 50-year-old Building
  • Rooftop solar in renovated building
  • Renovated buildings can be sustainable.


The authors, a homeowner and an architect without in-depth technical knowledge of energy efficiency, embarked on the renovation of a 50-year-old house in Bangalore, India. The result was a design that combined family needs with energy efficiency and sustainability. The 3000 m2 property underwent a comprehensive retrofit, encompassing energy-efficient practices and renovation with renewable energy solutions, showcasing a blending of architectural design and sustainable systems. 

Load reduction strategies included double-glazed windows, solar chimneys for stack-effect cooling, cool roofs, plants for shading, and energy-efficient appliances. Efficient systems, such as a VRF system, BLDC fans, LED lights, and home automation with sensors, have been installed for improved cooling, ventilation, and lighting. The house generates and uses renewable energy through a 4.89 kW rooftop solar array, a 200-liter solar water heater with a heat pump, and a 300-liter storage tank. Additional sustainability efforts also included rainwater harvesting and material reuse to reduce embodied energy. 


Renovation, Retrofit, Independent House, Energy Efficiency, Rooftop Solar


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