Installing Solar Water Heater for Home – Information and Costing

Solar Water Heater

Recently we installed 150 Litre Solar Water Heaters at our terrace. Below are the Information, photos and costing for Installation of Solar Water Heater.

When you decides to install solar water heater, you need to consider following factors,

  • How many people are there in your home who will be using hot water ?
    • Based on this the number of Liter water required needs to be finalized. Lets say, you have 3 people at your home and each one will use average 50 Ltr of hot water each day, then you will need to purchase 50*3 = 150 Ltr solar water heater.
  • What is your budget for purchasing new solar water heater ?
    • As you might already be aware, solar products needs somewhat more initial investment, so you needs to enquire different brands available in market and compare their pricing and features for same model of solar water heater.
  • What is the warranty of the solar water heater and how you will contact them in future for servicing ?
    • Most of the solar water heaters are long durable, and comes warranty of 5-7 years. So you needs to get proper warranty information and how they will provide the service for future in case some issues. Once installed, the most common issue you might face is due to hardened water. But if you are ready to get solar water heater serviced once in one / two year then no issues.

The common pricing for installing solar water heater will include following things,

  • Solar Water Heater Price + Tax
  • Transportation Cost
    • If you have agreed to pay for transportation cost of solar water heater ( tank + pipe etc ) from company to your home, then we need to account this cost.
  • Plumbing Material and Service cost
    • This will be an additional cost which includes purchasing all the pipes ( hot water pipe, cold water pipe ), valves etc and payment of plumber services. If your current cold water tank is at same surface level where are going to install water heater, then there will be additional cost to increase height of cold water tank, so that daily transmission of cold water to solar water heater and hot water from water heater to your bathroom tap can be automated without daily efforts required to fill solar water heater tank.
150 Litre Water Tank with Stainless Still Inside and Puffing material between stainless still and outside plastic to prevent heat flow to outside.
Socket to connect Glass Tubes with Stainless steel Tank
Socket for Cold Water Inlet to Water Tank
Other side Socket for Hot Water Outlet
Glass Tube Specifications
Solar Water Heater Frame where Water Tank gets installed and on slider Glass tubes resides.
Plumbing Material ( Pipes are not in Photo )
Frame After Water Tank is placed on Top Surface.
Frame End towards ground where end of Glass Tube is held.
This is how Final Installation Looks Like ūüôā

Refer to “Guidelines for installation of Solar Water Heating Systems in high rise buildings and multi storied flats” Issued by MNRE down-loadable from LINK.

Innovative automatic fruit feeling machines by Pelamatic



Robito Almendra – Helps to separate Almonds from Cover

You can see various other good products from Pelamatic at their youtube channel

Innovative Products from Pelamatic for fruits and vegetables peeling


Recently we come to know about some of the interesting machines used for peeling fruits and vegetables from Pelamatic located at Valencia, Spain. Do watch the videos of the machines,
Orange Peel –¬† The founder of the company (Jos√© P√©rez) wanted to make a machine that will peel the many oranges ate. And after a few nights of reflection and thinking got invent the only machine able to peel oranges in the market.

Robito Vaina – Designed to shell easily and quickly for shelling beans and peas.

The Solar Power Tree – An Intervention by Indian Scientist aimed at Utilizing Minimum Land to Harness Maximum Solar Energy


CSIR-CMERI,Central Mechanical Engineering Research Institute (CSIR-CMERI), Durgapur, West Bengal¬†has designed and developed a ‚ÄúSolar Power Tree‚ÄĚ to harness maximum solar energy utilising minimum land ‚Äď In general, it requires about 3.5 acres of land to produce 1 MW of solar power. For any state in the country to survive on green energy there will be requirement of thousands of acres of land. The acquisition of land is a major issue for private sector industry.¬†Solar Power Tree addresses the biggest hurdle of land requirements to gainfully utilise solar power.

Solar Power Tree is an intervention against land constraints. It harnesses solar energy for producing electricity with an innovative vertical arrangement of solar cells. It thus reduces the requirement of land while keeping the land character intact. It even enables utilisation of the cultivable land for solar energy harnessing along with farming at the same time.

The Salient Features of the Solar Power Tree are:

  • It takes much less land of only 4 sq ft for a 5 kW Solar Power Tree as compared to 400 sq ft of land required in case of the conventional Solar Photovoltaic layout;
  • It holds the panels at a higher height ‚Äď thus gets more sun (by 1 hour) in a day in comparison to that in conventional layout on ground; Thus, it is possible to harness 10-15% more power;
  • It is facilitated with water sprinkler at the top for self-cleaning of panels;
  • The paddy lands or agro-gardens or roads can be utilized for production of green power keeping land scape/cultivation unaltered;
  • Applicable for both rural and urban areas.

In future, it is possible to harness 10% more power by rotating panel direction twice in a day by using a module that aligns itself with the movement of sun. Also, aesthetic aspects would be incorporated in the design of solar tree to landscape the land.

The Specifications for 5 KW Solar Power TREE are:

  • Peak Power: 5KW;
  • Full Load Capacity: 60% of the Peak;
  • Battery Back Up: 2 hrs. (Full load);
  • Cost: INR 5 Lakh;
  • Footprint: 4 sq. ft.;
  • Arial Span: 25 ft. Dia,
  • Warranty: Panel: 25 Years.

The technology developed under the leadership of Dr. SN Maity, Chief Scientist, CSIRCMERI, has been licensed to: M/s Vibes Solar Solution India LLP, Kolkata. The process is under way to license the technology to more companies.

For further details, please contact: Dr. SN Maity Chief Scientist, CSIR-CMERI e-mail:

Watch “Solar Power Tree” news covered by “Voice of America”

Reference :  CSIR Press Release

Mitticool – Inspiring story of craftsman who built Refrigerator without electricity

Born in the Prajapati family, originally belonging to the village Nichimandal of Morbi, Rajkot, Mansukhbhai had exposure to the clay tradition since childhood, as this was his family’s traditional profession. He used to load clay from the ponds and fields on the donkey and ferry it to his place. Other than this, his contribution was limited as he was not much interested in the pottery work.

Having gained a sound knowledge while working in the pottery unit, the desire to start an enterprise of his own started to grow in Mansukhbhais mind. During his childhood, he saw earthen pans/hot plates (locally termed as Kaladi/Tavdi) being manufactured manually on the potters wheel (locally termed as Chhakdo). Using this, one person can only make about 100 units per day. He had seen roof tiles being manufactured in large quantity on hand press, which made him think why cannot earthen pans be made the same way?

In 1988, he left his job and took a loan of Rs 30,000 from a money lender to start his own earthen plate manufacturing factory. He purchased a small piece of land for the factory, dyes and presses, soil mixing machine, electric potters wheel and other scrap objects. Then he modified the roof tile making hand press and developed a hand press machine having capacity to produce 700 earthen pans per day.


In the fateful earthquake of January 2001, Mansukhbhai suffered huge loss, as most of his stock got broken. He distributed the stock that escaped the quake to the quake affected people of Kutch. In February 2001, Sandesh Gujarati Daily had a photo feature on the earthquake where at one place it showed a broken water filter of Mansukhbhai with the caption the broken fridge of poor.

This caption ignited a thought in him to work on a rural fridge that did not need electricity and could be used by masses. Though he started thinking about it after the Gujarat earthquake of 2001, it was 2002 when he actually started his work. Almost the same time, Mansukhbhai came into the contact of Gujarat Grass-roots Innovation Augmentation Network (GIAN), Ahmedabad. After a painstaking journey of three years during which he tested all sorts of soils and fridge designs, he finally came out with Mitticool fridge in 2005. A civil engineer saw the fridge and looking at its applications gave him the order of 100 pieces and an advance of Rs. 2 lakh.

Check Address and Contact Number of Mitticool at

Watch Story of Mansukhabhai Prajapati, covered in leading national news channel, NDTV.

Opensource softwares for Agriculture / Farm Management

Android App


farmOS is a web-based application for farm management and planning. It is built on Drupal, which makes it modular, extensible, and secure. Openlayers is used for mapping and geodata manipulation.

Check the article “Installing FarmOS on Linux/Ubuntu Desktop” if you want to try the FarmOS software by your own. The source code is also available at github repo.


AgroSense is a free and open source farm management and decision making software. The source code is available at bitbucket & check the limetri website. You can also download the Windows & Linux executables of this software from website atdownloads page


Open Ag Toolkit ( OpenATK ) makes it easier to manage farms by improving the way farmers are able to collect and use information. written some simple, free, open-source mobile apps that sync across everyone on a farm through existing cloud services like Trello and Dropbox. You can find the source codes for these apps at github , also you can visit OpenATK website.

Organizations working for opensource in agriculture and allied sector


Open Food Network

Founded in Australia, the Open Food Network started as a little experiment with a van, some farmers and some friends. Since then it has grown to become an open source platform collaboratively nurtured by like-minded people around the world.

The Open Food Network is the flagship project of the Open Food Foundation is a non-profit, registered charity established in October 2012 to develop, accumulate and protect open source knowledge, code, applications and platforms for fair and sustainable food systems.

If you want to try the open food network software by your own you can by following steps from ” Installing Open Food Network online marketplace for local food on Ubuntu Linux “

The open food networks source code is available at github openfood repo.


Open Food Facts

Open Food Facts is a free, open and collaborative database of food products from the entire world. On the website there is list of foods with the details of each products ingredients, nutrition facts etc which are submitted by people. The contributors to the Open Food Facts project are people that are passionate about food. They add products to the database and they are also the primary source for improvements and applications ideas through the Idea Forum and several others venues for the Open Food Facts community to share and discuss.  The source code is available at github.

Farm Hack

Farm Hack is a worldwide community of farmers who build and modify own tools. Community people share their own hacks online and at meet ups because the community believe we can become better farmers when we work together. Farm hack website is a good resource to find the information about lots of innovative tools required for farming and there you can find the designs of those tools open for everyone.

You can read information about one of such tool “Culticycle ‚Äď A pedal powered tractor by Farmhack” at the article.

Open Agriculture Initiative (OpenAG)

The Open Agriculture Initiative (OpenAG) is an An open source ecosystem of food technologies to create healthier, more engaging and more inventive food systems. Its mission is to create more farmers for the future of food production. OpenAG is developing the open source hardware and software platforms for sensor-controlled hydroponic and aeroponic agriculture systems. Visit OpenAG Website.

Low Tunnel Farming for Off season cultivation

Low Tunnel

Low Tunnels which alternatively also called as “Plastic Tunnel”¬†are small greenhouse-like structures, covering the plants along the row. These tunnels¬†are erected with wire hoops and covered with clear plastic. The tunnels promote early growth by warming the air surrounding the plants, using heat from the sun. The tunnels also protect plants from frost that can destroy or damage them.

What are Benefits of Low Tunnel Farming ?

Ans:  As we can see from above picture, low tunnel technology mostly covers the crops, which is very good in uncertain weather conditions such as hailstorm, large rain where there are most chances that the crops get damages. Apart from that there are nemerous other benefits of this like as below,

1)  Creates suitable micro-climate for growth & development
2)   Enables earlier seeding hence larger yields
3)   Protecting the plants against insects and birds
4)   Protects from hailstorms, frost, and heavy gusts of wind
5)   More cushioning effect to the soil surface
6)   Better Gas exchange capacity thus less suffocation to root
7)   Reduction in the need for chemical treatment of plants
8)   Used for off-season production
9)   Better air/water and gas permeability.
10)   Can provide local greenhouse effect

What are the Crops which can be cultivated under Low Tunnel ?

Ans: Various crops such as Melons,Tomatoes, green pepper, hot peppers, watermelon, pumpkin, strawberries and flowers, among others. This technology is also suitable for cultivation of Lettuce, Carrots, Radish, Cauliflower, Potatoes, Spinach, Leeks, Herbs, Shrubs etc.

Low Tunnel

Watch below the video which shows the actual farm demo using Low Tunnel Technology. The video has been shot at Bhutada village near Jaipur, Rajasthan, India. The mulching papers, low tunnel plastic is manufactured by Gujarat based Agriwin Fabric Pvt. Limited.

Where Can we find more information / resources about Low Tunnel ?

Ans : Excellent article written at “University of California” website.

References :

About Author :
Mr. Kumar Khandekar is an agriculture consultant, hobbiest photographer and also works for promoting good agricultral practices through his videos. He can be contacted at his email

Disclaimer : This article is shared by Author with ‚ÄúGreen Ecosystem‚ÄĚ voluntarily, and for the purpose to be shared with everyone for free and Green Ecosystem doesn‚Äôt own / reserve any rights of this article, all rights remains with the author (as mentioned above) of this article. Contact with title of this article if any change.

Hydroponic – Information & Demo – Part II



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Hydroponic – Information & Demo – Part I


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Flower / Floriculture farming in Greenhouse / Polyhouse



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