Revere the sun, draw its energy 

With all of us complaining about the summer sun and the long hot days, it seems as if we are looking for ways to hideaway, stay cool and hydrated right now.

Published: 08th May 2019 04:00 AM  |   Last Updated: 07th May 2019 11:25 PM   |  A+A-

CHENNAI : With all of us complaining about the summer sun and the long hot days, it seems as if we are looking for ways to hideaway, stay cool and hydrated right now. For thousands of years, ancient civilisations have revered the sun. Indians hold Surya as the energy source of all life itself and offer daily prayer or Surya Namaskar as a regular morning ritual of worship and health.

The architect’s version of the Surya Namaskar is a Solar Study — analysing daily movement to design the building and plan for rooftop solar placements. The sun is at its peak in summer and travels a path through the sky at its highest angle on June 21 (Summer Solstice). The summer solstice is the longest day of the year as the sun travels the farthest path as it makes its way from sunrise to sunset.As we gear up towards the longest summer days yet to come, let’s take a minute to see what we can gain from the sun in all its glory rather than what there is to be afraid of.

The Tamil Nadu Solar Energy Policy 2019 was released in February this year by TEDA (TN Energy Development Agency) and aims to encourage and incentivise electricity consumers to set up solar energy systems. The proposed single-window system for technical support, funding support, and project clearance aims to streamline the process between various government departments — making it easy for the consumer to implement solar photovoltaics and avail net metering.

My personal experience is from my office building where we generate about 268kW of electricity every month through Photo Voltaic (PV) panels on our roof. The power generated is used towards running the air handling units that help cool the building. So in a way, the harder the sun shines, the more energy we gain to stay cool. The recorded numbers in the months of (April/May/June) is between 338-348kW. Given that this is almost  25 per cent to 30 per cent increase over the average proves yet again that an investment in even a small scale renewable energy unit at a home or private office level is totally worth it — government mandate or not.

If you are considering a retrofit of solar on your rooftop, here are a few main things to keep in mind. The roof slope and orientation have to be studied, solar energy is better harvested at angles that depend on the latitude of the location along with the availability of sunlight and solar geometry. Flat roofs offer the greatest flexibility, allowing panels to be installed at an optimum inclination and orientation to the sun.

The biggest advantage of using PV’s is that the electricity generated by them can be directly used during the day, making it perfect for offices and energy-guzzling appliances and motors in a home.  Further, having a rooftop solar generator will keep you cool even during the power cuts, if any, this summer.
So go ahead, revere the sun, draw from its energy instead of letting it sap you out. Use this summer as the excuse to implement a renewable solar energy unit on your roof — the city, state, and planet will all thank you.

India Matters


Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on are those of the comment writers alone. They do not represent the views or opinions of or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. reserves the right to take any or all comments down at any time.

flipboard facebook twitter whatsapp