Sweet Answer from Solar Mango: (updated Jul 2015)
Rooftop solar makes both economic and business sense for commercial and industrial units, as these require uninterrupted supply of power, and the cost of conventional power for these sectors are high, in many parts of the world.
However, from what has been observed by Solar Mango, the attractiveness of rooftop solar power differs from one industrial sector to the other.
As can be easily visualized, the extent to which rooftop solar panels can satisfy the electrical loads depends on the type of facility. For instance, for a skyscraper, rooftop solar panels will provide an insignificant proportion of the total energy consumption, while for hotels with a large roof area but only a couple of floors, rooftop solar could in some cases provide up to 40% of their total power needs.
Apart from the total load required, what also matters is when this load is required. For those facilities that use electricity mainly during the day, solar power will be quite attractive as this will enable them to use most of the solar power without the use of batteries.
Thus, it is apparent that there are multiple criteria based on which the attractiveness of solar is determined for various sectors. With all the above considered, Solar Mango’s studies suggest that the following sectors could go solar faster than many others
- Hotels
- Hospitals
- Colleges, and to a lesser degree, schools
- Software companies & service sector companies such as banks
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