Sunday, January 17, 2010

My solar water heater




200 LPD Solar Water Heater System, 36 ETC tubes w/o Electric backup at 541/9 Faridabad.
Make: Sudarshan Saur Shakti Pvt Ltd, Aurangabad.
Driven by a will to contribute to a green world, and by a need in a perpetually energy-deficient state, I installed my first 200 LPD SWHS at my 1000 sq yard home in Faridabad.

There were a number of concerns that the family had when I was putting it up:

- it will never work!
- the expense is too high!!!
- I do not want any work in 'my' bathroom
- it won't work in the winters!

...and so on!

A year on, we have crossed the early adptor's pinch.

- yes, the system works. When October had this usual nip in the air, the SWHS was giving me hot water. In fact, we got hot water thru till end December - and only in end Dec- early Jan did we experience the Delhi fog.

- Interestingly, the system gave hot water on the day of the fog. However, it was luke warm the next day ...guess I may have lost about 11 days this season on fog count. Otherwise the system worked - and worked beautifully.

- Others who have installed the system with the electric backup would not even face this glitch.

- the expense is not too high finally. A 200 LPD system installed to cover 3-4 points will save approx 12-16k of geyser cost - and the government subsidy of 4000/- per 100 lpd and DHBVN subsidy of 3600/- per 100 lpd combine to give a 15,200/- capital subsidy. I look at the electricity savings (approx 6000/- in my case) as sheer profit!

My take - Solar Water heaters make eminent sense, specially for new buildings where u can plan the installation and piping from day 1. Matter of time before it spreads all around!!!

Tuesday, December 29, 2009

India's Solar Power Initiatives are shining brighter!


Nov 23rd, 09 Jawaharlal Nehru National Solar Mission was born. The mission has been launched under the brand "Solar India" and has the twin objective of making "energy secure" and "ecology secure".


National Missions have transformed IT and India Infrastructure. Solar India has potential for doing so as well.


For full details, do send a mail to aggarwal.ashwini@gmail.com with a subject header "Blog: SOLAR INDIA"...