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Renewable Energy Exhibition in Bangalore: Green Summit (Apr. 23 - 25, 2015)

  • Tuesday, 14 April 2015
  • by
  • Rajesh K
  • Green Summit 2015, organized by FKCCI & MM Activ, is the upcoming Renewable Energy exhibition and Conference in Bangalore, Karnataka, India. This expo is scheduled to be held from April 23 to April 25, 2015.

    Exhibition Address: White Orchid Convention Center, No. 9, Adjacent to Manyata Embassy Business Park, Hebbal - KR Puram Ring Road, Nagavara, Bangalore, Karnataka - 560045. Google Maps Location Link.

    The Green Summit 2015 is a B2B exhibition that seeks to connect sellers and buyers in the Renewable Energy segment. They also want to promote the exchange of ideas and information by bringing together Govt. officials, decision makers, industry representatives, investors, and customers on a single platform. Along with the exhibition, there will also be a Conference & Other events. 

    Focus Areas for the Exhibition: Solar Energy, Wind Energy, Geothermal, Bioenergy, Waste to Energy, Energy Efficiency, Mini Hydel, Fuel Cell, Tidal Energy, Flywheel Energy, etc. 

    Exhibition timings: Thursday, April 23 - 12 Noon to 8 P.M; Friday, April 24 - 10:30 A.M. to 5:30 P.M; Saturday, April 25 - 10:30 A.M. to 4:00 P.M.

    Participation in the Renewable Energy Exhibition is Free of Cost and Visitors can Register Online or visit directly.

    There will also be parallel conference & other sessions/events on all three days. The program at a glance for the renewable energy conference/events with topics, timings, and venue can be downloaded from here. Or, you can refer to this webpage link for more details. This is a paid conference and when I checked on their website, the charges were mentioned as Rs. 5,500 or USD $125 + Tax for individual participants. Do check their site for latest pricing and applicable discounts (if any). 

    For exhibitors who wish to promote their products/services, do check this page for stall size, tariff, floor plan and availability. I think there are some stalls available to be booked - do check their website to see if you can still exhibit there now. 

    I will be attending this exhibition (not conference), and I will try to present the important and interesting products, services, and companies I find there. Stay tuned and follow this site (via email, RSS, G+) to keep yourself updated, especially if you are connected with the Renewable Energy segment in India.

    Looking forward to my visit next week. Bengaluru, here I come :)

    Rajesh K
    Administrator & Blogger - http://www.solarwindhydroenergy.com
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    Battery Health Monitor from Sukhila Power Electronics

  • by
  • Rajesh K
  • During the recently concluded HYREX 2015 in Hyderabad, I visited the stall of a company called Sukhila Power Electronics. They had displayed their Hybrid UPS there, and I noted their company website to get more information on their solar products. When I visited their website, I found an interesting product that could be useful to renewable energy installations that use batteries to store energy: Battery Health Monitor!

    Their website says that their Battery Health Monitor can monitor up to three strings of VRLA, Lead-Acid, and LMLA Batteries, each string supporting up to 24 batteries/cells. It seems this is a micro-controller based system that can test and display various battery parameters manually or automatically (at programmed intervals). It can monitor each battery, and can identify failing/failed batteries so that they can be replaced. There is also an auto monitoring mode through MCM (Monitoring and Control Module) and remote monitoring. 

    The system can read and display battery parameters like voltage, temperature, conductance, string voltage, current, etc. 

    For further details, refer to Sukhila Power Electronics Product page.

    Note: This website is not affiliated to the above mentioned company in anyway. The information mentioned here might change, hence refer to their website for latest info. This article is not a recommendation; hence customers are encouraged to do their own valuation and research before buying anything. 
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    Solar Products from Sukhila Power Electronics

  • by
  • Rajesh K
  • Here are some solar products from Sukhila Power Electronics, whose officials I met during the recently concluded HYREX 2015 exhibition at Hyderabad. The below info has been taken from their website.

    1. Solar Charge Controller with Source Selector: This is microprocessor based and protects the battery from over charging or excessive discharge. 

    2. Solar Sine Wave Inverter: This converts the variable DC voltage generated by Solar PV Modules into clean Sinusoidal 50 or 60 Hertz AC voltage. Their Solar sine wave inverters are available for Single Phase (5 kVA to 10 kVA) or Three Phase (15 kVA to 60 kVA). 

    3. Solar AC Water Pumping System: Used with irrigation systems, urban building water supply systems, etc. this Solar Water Pumping system connects to and switches optimally between solar power and grid power for water pumping systems. 

    4. Solar Power Conditioning Unit: With electronic overload and short circuit protection, it rapidly charges the photovoltaic array on/off to control the charging of the battery and load. 

    Further Info/Manufacturer's product page: Sukhila.

    Note: This website is not affiliated with the above mentioned company in anyway. Please refer to their site for latest info, as there maybe changes. This article is not a recommendation; customers are encouraged to do their own research and valuation before buying anything. 
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    Land Mark Solar: Solar Petrol Pumps in Telangana & AP

  • Wednesday, 8 April 2015
  • by
  • Rajesh K
  • During the recently concluded HYREX 2015 Renewable Energy Expo at Hyderabad, I met the representatives of Land Mark Solar, the suppliers for Solar Petrol Pumps in Telangana & Andhra Pradesh. They also offer other services in the renewable energy segment like EPC, Solar Panel solution for organizations, etc. In this article, let's focus on their Solar Petrol Pump solution. 

    Petrol pumps are located everywhere - both in rural and urban areas. But they may not get adequate power through the grid always as long power cuts are common in areas outside the big cities. They generally employ diesel generators to compensate for these power cuts, but even for petrol pumps, that can be an expensive proposition on the long run!

    Hence it maybe a good idea to install solar panels to power petrol/Diesel pumps.

    Following is the summary of the Solar Petrol Pump solution offered by Land Mark Solar. (They provide Solar Panels made by HBL Solar, the large Govt. PSU.)

    Petrol/Diesel Pump Type: 2 Nozzles, 1 Petrol and 1 Diesel, 0.75 HP Pump ::: Solar Power plant of capacity 1440Wp size with 4 hours battery back up; Suitable PCU with high crest ratio & module mounting structure. 

    Petrol/Diesel Pump Type: 4 Nozzles, 2 Petrol and 2 Diesel, 0.75 HP Pump ::: Solar Power plant of capacity 2400Wp size with 4 hours battery back up; Suitable PCU with high crest ratio & module mounting structure. 

    Petrol/Diesel Pump Type: 2 Nozzles, 1 Petrol and 1 Diesel, 1 HP Pump ::: Solar Power plant of capacity 1440Wp size with 4 hours battery back up; Suitable PCU with high crest ratio & module mounting structure. 

    Petrol/Diesel Pump Type: 4 Nozzles, 2 Petrol and 2 Diesel, 1 HP Pump ::: Solar Power plant of capacity 2400Wp size with 4 hours battery back up; Suitable PCU with high crest ratio & module mounting structure.

    They told me that they have completed a few solar petrol pump projects in Telangana & AP. So if you are interested to power your petrol/solar pumps through solar energy, and you are located in this region, you might want to consider Land Mark Solar for your project. 

    Company Contact: Land Mark Solar Pvt. Ltd., #17-1-391/S/61/1, Singareni Colony, Saidabad, Hyderabad - 500059. Ph: 9908277771.

    Disclaimer: This website is not affiliated with the above mentioned company in anyway; all details have been taken from the brochure provided to me by the company officials. Information subject to change with time, please check with the company officials for the latest info.


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    Concentrated Photovoltaic (CPV) in India: Chroma Energy

  • Wednesday, 1 April 2015
  • by
  • Rajesh K
  • Chroma Energy is trying to make Concentrated Photovoltaic (CPV) Technology available in India. This, when combined with solar trackers, can dramatically improve the efficiency of solar cells/solar systems, they say.

    The two dominant technologies to generate solar power today are Crystalline and Thin Film Solar PV. Solar Thermal is also there, but the adoption/efficiency is lower. CPV is a relatively new technology that uses optics to concentrate sunlight on small and efficient solar cells. These systems are not only smaller, but their energy conversion ratio/efficiency is significantly more than silicon-based PV technologies. The technology brief is here.

    Some benefits of CPV:
    • CPV requires less land than Solar PV (for the same capacity).
    • CPV is not water intensive. 
    • CPV has a lower energy payback period.
    • Since they are high-mounted structures, land below them can still be used for other purposes.
    • Suitable for countries like India that have high irradiation levels at many places. 
    • If manufactured in India, which has the capacity and the ecosystem, a number of jobs and ancillary industries will be supported. 
    Let's hope the company will bring CPV technology to India; start producing and generating electricity through CPV panels, soon. This technology looks exciting and promising to me.  

    Further Information: Chroma Energy.

    Disclaimer: This blog is not associated with the above mentioned company/products in anyway. All information is taken from their website. Please refer to their website link for the latest info. 
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    Single Axis Solar Trackers in India: Scorpius Trackers

  • Tuesday, 31 March 2015
  • by
  • Rajesh K
  • Single Axis Solar Trackers from Scorpius Trackers in India, Introductory Video:



    Scorpius Trackers, based out of Pune - India, is the manufacturer of Single Axis Solar Trackers that automatically and continuously track the sun, and rotate solar panels to face the direction where sunlight exposure is maximum, from morning to evening. Solar trackers increases the energy generated (per panel) and hence decreases the land required for a solar plant project. The company claims that energy output over fixed PV increases by 18 - 25%, for a corresponding increase of 9 - 12% Capex per MW. I met the company officials during the recently concluded HYREX 2015 Renewable Energy exhibition at Hyderabad. 

    According to their brochure, their solar tracker system calculates the position of the sun using various algorithms and determines the optimum rotation angle every minute. It also adjusts the tracker tilt based on the Solar AZIMUTH, and back tracking tries to avoid shading of the rows of PV modules on the shaded side. When the tracker detects high wind speed it can reduce its presented cross section to the wind, hence reducing the force on the mechanical structure. This is called tracker stowing.

    The tracking system can be operated using an AC source (Grid) or using the power generated by the Solar modules themselves. They say one 250W module is sufficient to power a 250 kW tracker block. Also, the integrated battery in the controller maybe sufficient for tracker movement for up to 5 days, in case of temporary non-availability of external power. The company says that the pay back on tracker investment is less than 3 years. 

    Scorpius Trackers manufactures single axis trackers with 100% frictionless pivots, no bearings, no bushes, no lubricants - hence reducing maintenance requirements. The solar trackers are mostly used in large solar plants, but can also be used for stand alone ground-mounted/roof-top installation like trackers for solar pumps. 

    Further Information/Company Website: Scorpius Trackers.

    Disclaimer: This website is not associated with the above mentioned company in anyway. Readers are encouraged to do proper research and evaluation of both the company and their products before deciding to buy them. Information given here has been taken from their brochure/website and is subject to change anytime. Hence, refer to the company website for the latest information.
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    Turn your Kitchen Waste into Biogas for Cooking!

  • Wednesday, 25 March 2015
  • by
  • Rajesh K
  • In the kitchen (and sometimes outside it) we produce a lot of organic waste. When we mix this waste with plastics, metal, chemical waste and send it to a landfill, it not only creates a lot of pollution but also makes it difficult to separate and recycle waste. All the smell from the dustbins/landfills are caused due to this organic waste from kitchen, mostly. 

    So can we do anything about it?

    Yes. We can collect organic waste (food waste, vegetable peels, fruit leftovers, cooked meal leftovers, etc.) and inorganic waste (plastic, metal, etc.) in separate dustbins and deposit only the inorganic waste in the dustbins/dumps. 

    But what do we do with the Organic waste?

    Turn it into money! You can generate both biogas for cooking and compost for plants in the garden if you deposit the organic waste into a biogas digester plant.

    But aren't the biogas digester plants very big & require a lot of space?

    Some are, not all. There are small biogas digester units for homes/families too. For example, a 1m3 (one meter cube) biogas digester plant requires a space of 4 x 5 feet only. It generates 1m3 of biogas when 6 - 10 Kgs of organic waste is digested by it, which gives a continuous flame for 2 hours. The biogas stove/burner is separate from (but similar to) the normal LPG stove/burner and requires simple piping system for carrying the gas. It may not replace LPG cylinders but can reduce the no. of LPG cylinders required for a family. 

    What about Compost?

    After organic material is digested, compost will come out of the digester (as a byproduct) which is mixed with water and can be used as manure for home/kitchen garden. Note that this byproduct may induce some smell and hence need to be stored in closed containers. However, there will be no smell coming from the main unit unless there is a leak. There is no need to buy or make compost for your garden/kitchen garden if you have this system.

    Can I Install it in my House?

    Yes, if you have some space - preferably open space exposed to sunlight - you can install this unit in your house/terrace. 

    Of course, there are separate (larger) biogas plants for organizations like eateries, hotels, etc. that generate a lot of organic waste. 

    If you live in Chennai, have a look at B-Sustain who offer Biogas Digester plants in varying capacities. Or you can contact Vibrant Marketing if you have any sales enquiries.

    Please note: This website is not affiliated with the above mentioned companies in anyway. I am just trying to help spread the word as the product generates biogas, which is renewable energy. Readers are requested to verify & evaluate the products and services offered thoroughly before buying.
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    Sun On Wheels: Solar + Energy Efficient Appliances on a Van (Basil)

  • Wednesday, 18 March 2015
  • by
  • Rajesh K
  • Basil Energetics is an innovative company focused on providing Solar Power + Energy Efficient appliances, based out of Chennai. They recently demonstrated the effectiveness of their Energy Efficient appliances powered (only) by Solar Panels mounted inside/on an insulated container of a Van, in the recently concluded REnergy renewable energy expo at Coimbatore. I met the Chairman of the company at their Ambattur office in Chennai yesterday.

    The best thing about their innovative system is: It powers 1 x 1.5 Tonne AC, 1 x 300L Refrigerator, 4 x LED Lights, 2 x Fan using a set of 4 x 4 Thin Film Solar Panels of 100W capacity each (Total: 1.6 KW) that occupies an area of 125 sq. feet. This is possible because they have designed all the above mentioned appliances to be highly energy efficient. 


    You can see their (partial) setup in the above photo. They have not used batteries in this system, and hence, I was informed that the entire system was running using the solar power generated on the premises on the day of the expo. The heart of the system (if we can call it that) is a controller (iGrid) that looks like this: 


    This controller monitors and measures the available power from the solar panels, and also monitors the load requirement for any given time (continuously), and:
    • If there is adequate power from the solar panels, it will run all the (DC-based) appliances directly using solar power.
    • If there is insufficient power from the solar panels, it will run as many appliances as possible using solar power, and will run the remaining appliances using the grid power (if connected).
    • If there is no solar power (during the night - for example), it will run all the appliances using the power from the grid. 
    • Excess power can be fed back to the grid if the system is enabled to do so. A few Indian states pay consumers for receiving power generated by their rooftop panels. (If grid-connectivity is sanctioned and appropriate devices as recommended by the electricity board is used.)
    If required, they can also provide batteries (to store solar energy) and micro-inverters (to run other appliances). However, batteries are not recommended due to their high cost, frequent replacements, and other limitations. Besides, electricity from the grid is mostly available during the night in many places. 

    Here's the Zero Energy Home chart prepared by the company: (Click to see a larger picture)

    They have taken the common appliances used in a typical home and the number of hours they are used, and have calculated the electricity consumed by each over a day. The first five appliances are the energy efficient ones sold by them and the remaining five are common ones sold in the market. According to this scenario (provided to me by the company), the electricity consumption per day comes to 7.15 units and the energy fed back to the grid using a 2 KW solar panel system comes to 7.35 units. That means, the house can produce more electricity than it consumes! Please note: Since there is no battery/charge controller/inverter involved, this is applicable only in states that have grid connectivity and feed-in tariff option. Also, there will be variation on case to case basis.

    You can read more about their energy efficient appliances, and how much power (and money) one can save by using energy efficient appliances from here.

    Basil Energetics has introduced another interesting product: Battery powered electric bicycle (iZip)

    This is an indigenous electric bicycle that uses a brushless HUB motor (back wheel). They have used contactless throttle for stepless variation of speed and removable lithium-ion batteries that give 6-times more life compared to lead-acid batteries. Max. speed is 20-15 KM. Range is 25 KM per charge. Time taken for charging is 45 - 90 minutes, depending on the state of battery discharge.

    Here's the company website for further information/contact details: Basil Energetics

    Disclaimer: This article has been written based on the information provided to me by the company officials. The photos have been published with their permission. Readers are requested to verify all claims while engaging with the company/products. This article is for your information only (not promotional) as I think they are doing something very interesting. This site is not affiliated to the company in any way.
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    Solar Impulse 2, the Solar Airplane, will Land in India today (March 10, 2015)

  • Tuesday, 10 March 2015
  • by
  • Rajesh K


  • Solar Impulse 2, the Solar Airplane, will land in Ahmadabad, Gujarat, India - today night around 9:30 PM (March 10, 2015) from Muscat. It is expected to dock in the Airport for a couple of days and will leave to Varanasi, thereafter. During that time, the co-founders of the Solar Impulse project - Bertnard Piccard & Andre Borschberg, and the Solar Impulse team are expected to promote green technologies around the city. I guess visits for public and school children have also been arranged. If you are in/around these two cities, you might want check it out! :)

    BTW, Solar Impulse 2's mission is to show the world that it is possible to fly around the world using just solar energy/stored solar energy in batteries, and nothing else. Let's hope Green Tech will make this world a better place to live, without exploiting/destroying natural resources.

    You can follow the journey of Solar Impulse 2 LIVE on their website

    Here's another interesting video that shows the making of Solar Impulse 2:



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    My Bold Step: Becoming a Professional Blogger

  • Monday, 9 March 2015
  • by
  • Rajesh K
  • I don't know if my readers know this, but I am a professional blogger. That means, I create content for my blogs full-time (I have two more blogs - Technical Blog, Personal Blog), and I (try to) earn money through blogging. That can be done through advertisements, sponsorships, etc. from vendors who are in related fields as it will help them get more visibility for their products/services. 

    I think this is the boldest step I have taken in my life, especially since I quit a well paying technical sales job. I have been working full-time on my technical blog for more than four years now, and it generates some revenue. This renewable energy blog is more of a social enterprise, but the extent of monetary returns/revenue will determine if my content has actually reached people/creating a difference. But I will continue writing here even if there is not much returns for a few years. My personal blog is more for fun and sharing interesting/useful things I learn.

    Needless to say, I became a professional blogger because I love writing, and learning. The first three years were not productive (revenue-wise), but the last one year has been OK. But I am still nowhere near what my friends/former colleagues earn now. 

    Besides, I have been taking more risks - starting and running this renewable energy blog without a proper monetization plan/timeline is in itself a great risk. Especially as I have decided to visit five major renewable energy exhibitions across India and write about interesting products/services I find there, from this year. I have also written a short novel (fiction) that I am proud of - it doesn't generate revenue, of course! But since I get a lot of happiness when I write stories, it's fine. 

    I am proud of the fact that I have even been able to survive by blogging full-time, over the last four years. My savings from my previous jobs got exhausted quickly, but some part-time writing jobs have helped me along the way. Needless to say, I made a lot of sacrifices in my personal life, including spending very less for entertainment, etc. for a long time. Fortunately, I have crossed that stage now. In a way, that was good as I have realized the value of money now, and I have decided not to waste money on health-depreciating activities like eating fast/unhealthy food frequently, etc. 

    It's also been a mind opening experience. Since I didn't have money to splurge and show-off, my ego was crushed and I was more open to new learning/experiences. I have learned the importance of discipline, determination, and persistence in the face of repeated failures. More than all, I have learned humility and since then, surprisingly, my fear has reduced and I have become bolder. I guess this is why we need to take up (some) big challenges in life! 

    This post has been written for Housing.com where you can evaluate, rent, and buy houses across India. The opinions mentioned in this post are my own and are true. 

    Have a look at Housing.com's Promo Video embedded below: #StartANewLife 


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    Green/Net-Zero Houses: Optimism & Hope for the Future, at last!

  • Thursday, 5 March 2015
  • by
  • Rajesh K
  • The moment I came across/learned about Green, Sustainable & Net-Zero Homes is the moment that filled me with optimism and hope for our future.

    Although I run two blogs related to technology, I am usually skeptical about tech. That's because, I feel, we invent new technologies more to satiate human greed than to create a difference in other people's lives (especially disadvantaged and downtrodden). And with every technology we invent, we invariably seem to harm the nature in some way or the other. For example: Air, water, soil pollution, CFC, e-waste, etc. 

    But when I learned about Green Tech, I was very glad and was filled with optimism and hope for the future because, technology, for a change, can now be applied to reverse the damage we have inflicted on nature (and ourselves) instead of contributing further to the mess. 

    But how can individuals apply Green Tech to their daily lives? Simple: By building and maintaining Green/Net-Zero/Sustainable Homes

    OK, but what is a Green/Net-Zero House?

    A Net-Zero house produces as much (if not more) energy as the inhabitants use, by itself, using renewable energy technologies like solar, wind, bio-gas, geothermal, etc. It can even transfer the excess (unused) energy to the grid that can be used by nearby/other homes. Net-Zero houses are generally off-grid, meaning they do not need a connection to the grid/utility to buy electricity. Some homes do connect to the grid for backup/export purpose. The great news is, many Indian State Governments now allow homes to export excess energy generated using solar panels to the grid, today. This trend is only going to get better, in the future. 

    But is a Green/Net-Zero House Only about Renewable Energy?

    Definitely not. Here are some more aspects that make a Green/Sustainable/Net-Zero Home ~

    • Using energy efficient appliances like LED lights, low-energy consuming fans, refrigerators, air conditioners, etc. (BEE/Energy Star 5-Star rated, Inverter-based appliances, for example). 
    • Using solar water heater & solar cooker (that uses the sun's heat).
    • Using smart sensors to switch off unused appliances automatically.
    • Using the ambient heat and ambient light as much as possible during the day time. 
    • Planting cooling plants/trees around the house. 
    • Using bio-degradable materials and waste materials (as far as possible) to construct the house.
    • Having a garden/kitchen garden, and growing our own organic fruits and vegetables.
    • Making our own compost using the organic waste. 
    • Splitting the sewage connection into two, composting the solid waste, recycling the grey water using organic methods. 
    • Using rain water harvesting techniques. 
    • Using sensors that alert us when water is empty/full in the tank and when there is a leak.
    • Wearing organic/handloom clothes, using organic soaps/detergents. 
    • Eating organic vegetables, fruits, grains, etc. 
    • Using electric bikes and electric cars for mobility, that are powered by renewable energy.
    • Trying to use wooden/recycled furniture instead of using plastic-based ones. 
    There are many more aspects that make a green home, but this should suffice for a start. There are architects who build green homes or incorporate many of these green elements in their constructions, today. If you are an environmentally/socially conscious citizen, you should try to buy/build a house that incorporates green principles.

    By the way, did you know you can search for houses faster and more efficiently using India's No. 1 housing portal, Housing.com. Check it out!

    Disclaimer: This post has been written for indiBlogger Happy Hour contest in association with Housing.com. I agree to keep this post up for at least one year from the date of publication. The opinions mentioned here are my own.
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    In this blog, I am taking baby steps to enable myself (and others) to adopt renewable energy technologies. Only if we know all the options available to us, we will be able to take informed and meaningful decisions, right?

    Let us learn what renewable energy technology options we have, who provides them and at what cost.

    Frankly, renewable energy in India (and perhaps the world) is still in its adolescence - Let us help it become a confident Man/Woman! And in the process, let us debate, analyze, form opinions and break them so that we can achieve the Utopian dream of Energy Security through Renewable Energy. Are you with me?

    Rajesh K - solarwindhydroenergy[at]gmail[dot]com

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