solar power grid

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Deal Cadet
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any dimer here using solar power grid i want to know that is it good idea to install on grid power station

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4 Dimers
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I don’t exactly remember the details of my calculations but it’s definitely not a viable option unless you are into go green stuff.

Even after all those multiple accounts, multiple card amazon purchases to avail offers during diwali, it was not economical for me. I was just planning on a 1KW system (for my homelab setup) with Loom solar panel, 2 150AH batteries exide batteries, Luminous inverter +smarten mppt controller. I had done various calculations involving average solar irradiance (Bangalore) etc and it would take 4 years for the system to pay for itself (by then the battery would have to be replaced)

For an on-grid system the Electricity provider offers less rates and it would take 7-8 years for the system to pay for itself. This was from my cousin who had planned to install a 5KW system.

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rsai01 wrote:

I don’t exactly remember the details of my calculations but it’s definitely not a viable option unless you are into go green stuff.

Even after all those multiple accounts, multiple card amazon purchases to avail offers during diwali, it was not economical for me. I was just planning on a 1KW system (for my homelab setup) with Loom solar panel, 2 150AH batteries exide batteries, Luminous inverter +smarten mppt controller. I had done various calculations involving average solar irradiance (Bangalore) etc and it would take 4 years for the system to pay for itself (by then the battery would have to be replaced)

For an on-grid system the Electricity provider offers less rates and it would take 7-8 years for the system to pay for itself. This was from my cousin who had planned to install a 5KW system.

i was just planning 3kv on grid station so my electricity bill could be zero which will cost me around 1.3l as some vendor told me that it would recover cost of station within 4 years n life of setup is 25 years .

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Deal Subedar
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dealu22 wrote:

i was just planning 3kv on grid station so my electricity bill could be zero which will cost me around 1.3l as some vendor told me that it would recover cost of station within 4 years n life of setup is 25 years .

Calculate ur avg. Yearly cosumption. I m going to install 3kv, which will give me daily production of around 13 units = 780 units for 2 months (billng cycle). Which is almost double than my current requirement. While I pay 6-7rs. Per unit including all charges, the excess unit generated will give me only 2rs.

Calculate ur breakeven price on basis of it.

Also there is subsidary from central government & some state government (mine Gujarat). Do check that. My cost is around 1 lac including all cost – structure, geb, inverter etc.

It’s worth installing if u have enough sun source, space at terrace…..

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drjpatwa wrote:

Calculate ur avg. Yearly cosumption. I m going to install 3kv, which will give me daily production of around 13 units = 780 units for 2 months (billng cycle). Which is almost double than my current requirement. While I pay 6-7rs. Per unit including all charges, the excess unit generated will give me only 2rs.

Calculate ur breakeven price on basis of it.

Also there is subsidary from central government & some state government (mine Gujarat). Do check that. My cost is around 1 lac including all cost – structure, geb, inverter etc.

It’s worth installing if u have enough sun source, space at terrace…..

Seriously a 3kW system for 1L? Here in Bangalore it would cost us 1.8-2L and we were told MNRE subsidies are not assured now (No state govt subsidy). For 1L its definitely a steal. Also I guess 13 units will be for like 4-5 months of the year (not sure about how much sun shine Guj gets) and hope your calculations has taken that into account.

@dealu22
7-8 years calculation was based on the inputs/pricing by vendor in Bangalore. If it is available for a price like in Gujarat as stated by @drjpatwa then it would be worth. Also don’t go by vendor calculations and do your own accounting for winters, rain season.

Edit- Also don’t forget to include the intrest component your investment would earn at bank deposit rates for 6.5-7%. This if purely from economical point of view and doesn’t consider environmental concerns.

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Deal Cadet
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but is it true that this system has 25 years life

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Deal Subedar
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Yes. Actual rate after competitive bidding was around 50k/unit. Central govt. Is Giving 40% subsidary on it. Last year with subsidary rate was even below this (my relatives have installed it for around 85k for 3kw).

13 unit is average, in Gujarat majority of time u feel extreme heat & at that time it produces even 15 units which gets compensated with few monsoon & winter days. That’s why I wrote calculate as per ur own area.

My break even price is around 4 years, anything above that is bonus for me…

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Deal Subedar
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dealu22 wrote:

but is it true that this system has 25 years life

They are claiming that life of panel is 25 years. Don’t know how much true it is. For me anything above 4 years is bonus….

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Deal Subedar
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Any comparison between different brands ? Panels from which brand are considered best?
In my town, panels are available from these brands : Lubi, Jakson, Adani etc

I am planning to install 3KW and 5KW solar system on 2 of my locations.

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micke wrote:

Any comparison between different brands ? Panels from which brand are considered best?
In my town, panels are available from these brands : Lubi, Jakson, Adani etc

I am planning to install 3KW and 5KW solar system on 2 of my locations.

Don’t know about brands but you should consider cost vs efficiency of mono and poly crystalline panels.

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drjpatwa wrote:

Yes. Actual rate after competitive bidding was around 50k/unit. Central govt. Is Giving 40% subsidary on it. Last year with subsidary rate was even below this (my relatives have installed it for around 85k for 3kw).

13 unit is average, in Gujarat majority of time u feel extreme heat & at that time it produces even 15 units which gets compensated with few monsoon & winter days. That’s why I wrote calculate as per ur own area.

My break even price is around 4 years, anything above that is bonus for me…

Hope the subsidy is upfront. Don’t accept if they say it will be paid on a later date to your account as I have heard stories about that not happening.

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Deal Cadet
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my vendor is saying that 1.3L is after deducting subsidy

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dealu22 wrote:

my vendor is staying that 1.3L is after deducting subsidy

Ask them to give the brand and type of materials which will be used and share it here so dimers can give you their inputs. Mono solar panels are better than poly, is it an on-grid system or hybrid? Ask them the complete details even to the extent of the wires they would use and the support structure for the panels. Also have they done onsite inspection?

Also I am not completely sure about the subsidy part but many vendors have cheated saying the subsidy will come directly to bank and later on telling them their subsidy was not approved. So make sure about this and I would suggest upfront is better (had read something about approved vendors getting subsidy directly from the govt and the vendor would provide direct discount when they install).

This video might help answer some of your questions

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rsai01 wrote:

Hope the subsidy is upfront. Don’t accept if they say it will be paid on a later date to your account as I have heard stories about that not happening.

I don’t know about other parts of India but here whole process is very systamatic.

First the vendors have to register themself with electricity board. Then by competitive bidding price comes. Government has also prescribed standard brands to be use in each product like for panel adani, goldie etc. For cable polycab, kei, rr, pipe from astral & same way…

Also i have to pay just 1lac, subsidary amount will be bear currently by vendor & then they will get it from government (after giving bribe to babus).

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drjpatwa wrote:

I don’t know about other parts of India but here whole process is very systamatic.

First the vendors have to register themself with electricity board. Then by competitive bidding price comes. Government has also prescribed standard brands to be use in each product like for panel adani, goldie etc. For cable polycab, kei, rr, pipe from astral & same way…

Also i have to pay just 1lac, subsidary amount will be bear currently by vendor & then they will get it from government (after giving bribe to babus).

Yeah I have read a lot of good experience in Guj regarding this implementations. Here in Blr even the DISCOM employees (electricity supply company) don’t provide any info and provide some contact of a vendor who doesn’t provide any correct info. 1L for 3kW system is easily worth. Cheers mate. smile

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