Solar energy in India

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JohnTitor
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Re: Solar energy in India

Postby JohnTitor » 29 Dec 2017 12:07

Solar gurus

I'm planning roof top solar panels for a new build in karnataka.

I've been doing some research and I qas told that german panels are superior to indian/chinese panels. However, I've been quoted about 1lac pwr kwh.. apparently indian/chinese panels will being down the cost to 60-70k per kwh. While the difference doesn't seem much, when we arw looking at 3-5kwh worth of panels thw difference is huge.

Is it really worth paying for the German panels? The guy says that defects on the local panels will mean significantly lower power production..

Opinions?

guru.shetty
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Re: Solar energy in India

Postby guru.shetty » 29 Dec 2017 12:32

I've been doing some research and I qas told that german panels are superior to indian/chinese panels. However, I've been quoted about 1lac pwr kwh.. apparently indian/chinese panels will being down the cost to 60-70k per kwh. While the difference doesn't seem much, when we arw looking at 3-5kwh worth of panels thw difference is huge.


Kwh is a unit of energy. Kw is a unit of power. Not trying to nitpick, but just putting it out there. What you are being quoted is most likely for kw. Also, are your prices post govt subsidies?

Generally, it is not really true that German panels are superior. Some chinese companies make excellent panels too. In the US, a very popular one for residential installations these days is LG, which is korean. The ones on my roof are made by mitsibushi. A reputer manufacturer selling in the US gives 25 year warranty. Solar panels can last a good 40 years. So, my suggestion is to pick a company which gives a good warranty and you think that the company will last for that many years. Warranty is important for both panels snd inverters.

Generally, you need to make apples to apples comparision. A typical solar installation has the following costs.

1. Solar panels. A high quality panels costs around 80 cents per watt for residential systems. Mass procured panels cost 35 cents per watt for utility scaled systems.

2. Inverters. 2 popular types are string inverter and micro-inverters. Costs are very different. When you use what is also different.

3. Hardware costs for instsllation: screws, brackets etc.

4. Labor costs, profits and marketing costs of the installer.

From what I hear, in India, you are looking at $1.5 per watt for the entire setup - if high quality stuff is installed. This is before subsidies. You can then multiply it by your system size.

The place where you install panels can make a huge difference to ROI. In northern hemisphere, south facing roof has best exposure. Depending on your location, you then decide on tilt of panels for max benefit. And shade is a big no-no.

Edit: If roof size is small, higher efficiency panels make sense. ~22% is considered high efgiciency. Regular panels are around 18% efficient. Cheap ones are ~15% efficient. solarpaneltalk.com is a good place for more research.

durairaaj
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Re: Solar energy in India

Postby durairaaj » 29 Dec 2017 17:20

Just to give a tidbit,
Silicon panels themselves are almost everywhere its same.
The differentiaing factor is the conducting ink/paste/glue applied between silicon and metal current collector.
This is the crucial factor that determines the life of a panel. Even though the current collection efficiency may be similar for both low cost and German ones at the beginning. The aging will bring the significant difference out. The conductivity of the low cost panel will fall rapidly because of corrosion and increase in resistivity under the current collector. But its difficult to get this information from SPV suppliers. If possible ask for warranty for 10 years with respect to Solar cells efficiency.

JohnTitor
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Re: Solar energy in India

Postby JohnTitor » 29 Dec 2017 20:56

Thanks guys.

Yes you are right it’s Kw and not KWh

Roof space is about 600-700 sqft so that is about 4 or 5 Kw worth of panels. The 1lac per kw quoted was for everything including installation..

I was told that there are no subsidies for the panels themselves but excess electricity can be sold to the grid.
I believe the warranty is 25 years for the panels, need to confirm if it is for efficiency though

Theo_Fidel

Re: Solar energy in India

Postby Theo_Fidel » 03 Jan 2018 10:29

JohnTitor wrote:I'm planning roof top solar panels for a new build in karnataka.


In Karnataka with relatively benign climate, I would not bother with Panels from Germany. Almost all components, including those from Germany are sourced from the same handful of Asian suppliers. Only final assembly is local. Same is true of Indian panels. Not worth the price premium. defects ar e possible of course. But look at it this way. You will get about 15-20 panels. The savings from going with generic panels is 2 lakhs. Take 1 lakh and put it in bank. Easy warranty if 2-3 panels fail. Other one lakh, Idli Sambhar every day @ Darshini next 10 years. IME if a string or two fails the panels keep generating anyway. You just ignore the failures and let the remainder keep generating.

BTW 4-5 KW is a lot of power for India. In Karnataka High plateau yield 1800-2000 kwh / kw you will get around 8000-10,000 kwh per year. Almost 25-30 kwhr per day. Most Indian houses don't consume that much power during day. Make sure you have the net metering meter correctly installed. I have heard it is tough to get it approved and installed.

UlanBatori
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Re: Solar energy in India

Postby UlanBatori » 03 Jan 2018 10:45

JohnTitor wrote:Thanks guys.

Yes you are right it’s Kw and not KWh

Roof space is about 600-700 sqft so that is about 4 or 5 Kw worth of panels. The 1lac per kw quoted was for everything including installation..

I was told that there are no subsidies for the panels themselves but excess electricity can be sold to the grid.
I believe the warranty is 25 years for the panels, need to confirm if it is for efficiency though


For subsidies I think you should contact the organization called ANNERT (?) I think that is a GOI outfit. They not only give the subsidy, they guide you to local vendors who will handle the subsidy. Yesterday I heard from someone near PkD, Mongolia, about a 2KW system for a residential installation. ANNERT recommended the vendor (I think the vendors offer lousy customer service but that is another matter).

Also comparing solar panels, one should first understand what KIND of solar panels. HUGE difference in efficiency, cost and longevity, depending on whether you have mono-crystalline Silicon, polycrystalline (not as good) or amorphous/flexible sheet (far worse but low lifetime). So mono-crystalline will "cost" more but require less area and be more efficient.

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Re: Solar energy in India

Postby Vips » 11 Apr 2018 06:35

World's largest solar park to come up in Gujarat.

Gujarat Chief Minister Vijay Rupani today approved setting up a 5,000 MW capacity solar park at the Dholera Special Investment Region (SIR), which would be the largest such entity in the world after its completion.

The proposed solar power generation project would be set up in 11,000 hectares of land with an investment of Rs 25,000 crore, said an official release.

The project will contribute significantly in achieving Prime Minister Narendra Modi's target of producing 175 gigawatt of electricity through renewable energy sources by 2022, said Rupani.

The chief minister exuded confidence that the solar park would not only provide employment to over 20,000 people, but also open new manufacturing avenues for the entire supply chain in and around the Dholera International City.

ashbhee
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Re: Solar energy in India

Postby ashbhee » 11 Apr 2018 23:10

Vips wrote:World's largest solar park to come up in Gujarat.

Gujarat Chief Minister Vijay Rupani today approved setting up a 5,000 MW capacity solar park at the Dholera Special Investment Region (SIR), which would be the largest such entity in the world after its completion.


This is great, but where are these panels coming from? Are we going to simply import panels from China and install it or are we going to manufacture it?

Vips
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Re: Solar energy in India

Postby Vips » 13 Jan 2019 07:32

Ladakh will soon be home to world's largest solar plant.

Ladakh, known for its pristine natural beauty and colourful mountains towering over vast swathes of desolate land, is set to add another feature to its fame - the world's largest single-location solar photovoltaic plant.

Some 200km to the south in Kargil, another mega project will join forces to light up the plains, keep glaciers cool by saving 12,750 tonne of carbon
emission a year, remove dependence on diesel gensets and create livelihood for the local population that remains cut off for 6-8 months.

SECI (Solar Energy Corporation of India)- under the renewable energy ministry - is promoting the projects in J&K on a scale matching the grandeur of their locations - 5,000 MW (mega watt) for the Ladakh unit and 2,500 MW for Kargil - to be completed by 2023 at an estimated investment of Rs 45,000 crore.

The Ladakh project will be located at Hanle-Khaldo in Nyoma, a strategically important area 254km from Leh. The Kargil project will be built at Suru in Zanskar, 254km from the district HQ. Power from the Ladakh project will flow to Kaithal in Haryana, for which a900-km line will be laid mostly along Leh-Manali road. The Kargil project will hook up with the grid at New Wanpoh near Srinagar. The bids offer flexibility and many firsts, like combining the plant and associated transmission lines, putting promoters in control who otherwise have to depend on another entity for transmission and suffer if evacuation routes are delayed.

We have addressed issues faced in previous tenders and taken into account the challenging geography," SECI director (power systems) SK Mishra told TOI.

Another positive is the Leh and Kargil administrations have designated 25,000 and 12,500 acres of non-grazing land, respectively, at prices "remunerative" for the hill councils, which will also earn rental of around Rs 1,200 per hectare per annum with 3% annual escalation. "Identification of land is a big relief for prospective promoters, who were gung-ho during a site visit in spite of the isolated locations and hostile weather," Mishra said.

The projects are expected to spur development in the remote border regions and empower the local population through skilling for jobs such as cleaning of solar panels and maintenance of transformers etc. Power minister RK Singh had in August last year said Ladakh has potential of hosting 25,000 MW of solar power projects.

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Re: Solar energy in India

Postby Neshant » 13 Jan 2019 22:40

ashbhee wrote:
Vips wrote:World's largest solar park to come up in Gujarat.

Gujarat Chief Minister Vijay Rupani today approved setting up a 5,000 MW capacity solar park at the Dholera Special Investment Region (SIR), which would be the largest such entity in the world after its completion.


This is great, but where are these panels coming from? Are we going to simply import panels from China and install it or are we going to manufacture it?



+1. It's a load of money to spend on solar and if there is no local content, it's a giveaway of funds.

Are there any local solar manufacturers and will they be supplying the cells.

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Re: Solar energy in India

Postby Theo_Fidel » 18 Jan 2019 22:05

Hah! This is what BRF has been saying for donkeys years. Though this is a bit aggressive. I think 2035 is more realistic.

350 GW to 40 % was BRF number. 500 GW and about 60% of our electricity should come from solar/wind/hydro, maybe higher if we take energy efficiency more seriously.

What happens to all those coal plants, I don’t think anyone knows. The GOI has bailed out Adani and Tata looks like in GJ for 1.5 US Cents / kwhr. Works out to ~ $30 Billion over the life/next 30 years of the plants, they will be back for more money. From what I understand they are still losing money, but obviously making Billions for their owners. This is more than the plants are worth! It’s a nice gig if you can get a bail out economy. Every time I think of coal in India I get a headache.

https://energy.economictimes.indiatimes ... 8/67418119

New Delhi: India is planning to bid out 500 gigawatt (GW) of renewable energy generation capacity by 2028 to achieve its goal of 40 per cent electricity generation from non-fossil fuels by 2030, said Anand Kumar, secretary, Ministry of New and Renewable Energy (MNRE), today at the India-Norway Business Summit 2019 in New Delhi.

Of this, 350 GW would come from solar, 140 GW from wind, and the remaining from small hydro, biomass, he added.

“This figure excludes large hydro. If we take large hydro into account the figure will grow to 560 GW to 575 GW. To reach this figure we have to bid out 30 GW of solar energy and 10 GW of wind energy every year,” Kumar said.

ALSO READ: First-of-its-kind tool to assess potential of rooftop solar in Bengaluru

Perfecting the next Generation Utility Platform
He further added that if the country's Gross Domestic Product (GDP) grows at a rate of 6.5 per cent, the requirement for electricity generation capacity would reach 840 GW by 2030.

“Out of 840 GW, we plan to install a little more than 500 GW in renewables. We have installed 75 GW renewable energy capacity in the country and another 46 GW is under various stages of installations,” added Kumar.

He also said that if large hydro projects were considered under renewable energy, additional 46 GW would be in the process of installation, taking the total figure to 163 GW.

The existing 75 Gw base of green energy capacity constitutes around 22 per cent of the total installed power generation capacity.

Kumar said that the share of non-fossil fuel based capacity in total would be 33 per cent by 2022 without considering large hydro plants. The country would achieve 40 per cent by 2022 itself rather than 2030 in case large hydro is also taken into account.

ramana
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Re: Solar energy in India

Postby ramana » 22 Jan 2019 22:48

What are solar charkas?

Please post a description if you can. Thanks.

JTull
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Re: Solar energy in India

Postby JTull » 23 Jan 2019 17:50

ramana wrote:What are solar charkas?

Please post a description if you can. Thanks.


http://www.haritkhadi.com/

To promote employment among poverty-struck people living in rural and semi-urban areas of India, Bhartiya Harit Khadi Gramodaya Sansthan came up with a unique model through Khadi Solar Charkha project. In an effort to revive Khadi and provide the poor with various employment opportunities through solar charkhas, we established the Bhartiya Harit Khadi Gramodaya Sansthan in June 2016. Our Organisation aims at manufacturing khadi organically be it from cotton fibre or other eco-friendly and locally available resources like banana leaves or milk. Using solar charkhas and solar looms ensure the continuous workflow in the various steps that involve in producing Khadi fabric.




saip
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Re: Solar energy in India

Postby saip » 20 Mar 2019 04:43

JohnTitor wrote:Thanks guys.

Yes you are right it’s Kw and not KWh

Roof space is about 600-700 sqft so that is about 4 or 5 Kw worth of panels. The 1lac per kw quoted was for everything including installation..

I was told that there are no subsidies for the panels themselves but excess electricity can be sold to the grid.
I believe the warranty is 25 years for the panels, need to confirm if it is for efficiency though


One thing you have to remember is solar panels do not produce rated power. I have 6.25 KW panels on my roof and I am in California. The highest they ever produced is 39 kwh (or units they are called in India I think) in a day in August (that is when they were installed) and the lowest is just 2 kwh (two) on a 100% cloudy day. On average I expect they will produce around 12 k units in a year and that is about 100% of my consumption. I have only completed 7 months since installation.

JTull
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Re: Solar energy in India

Postby JTull » 20 Mar 2019 13:10



I hope battery technology is indigenised.

banrjeer
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Re: Solar energy in India

Postby banrjeer » 12 Apr 2019 22:53

Does any one know Indian companies that make cells?

I know several that import cells and make modules
There are of course many companies that import modules.

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Re: Solar energy in India

Postby Supratik » 21 Apr 2019 01:13

Top 5 solar companies in India.

https://youtu.be/7sk4rzp6RWY


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