Buildings are predestined to generate solar energy if their overall built volumes and specifically the roof surfaces are oriented correctly.  Typically, solar photo-voltaic or thermal collectors mounted on a south-facing roof can make optimal use of the sun's rays to generate ‘green’ energy for the project.

 Simulation software can help in planning, predicting the total energy requirement for a project keeping in mind the exacting site conditions and programming requirements.  Ideally, the required residual energy can be provided by an active solar or wind-based energy generation system. At present, both solar as well as wind-based technologies are widely established across the world.

 Project sites blessed with solar, wind, water or geo-thermal sources can make best use of the same to reduce operation and maintenance costs and their carbon footprint.

 On the whole, authors propose more ‘sail-boat’ strategies, making use of the prevailing conditions, rather than ‘motor-boat’ utilities, causing more carbon footprint and global warming. It is needless to mention that in the long run ‘low-tech - passive’ systems are more economical to design, execute, operate and maintain than their ‘high-tech active’ counterparts.