Sustainable Why you should install a solar rooftop system
- Thread starter Mohan997
- Start date
HI am , looking at this and excellent thread. I have got a quote for 285000 for 5 KW single phase, I want 6KW sadly in Karnataka it seems after exceeding 5KW we have to go for 3phase hence cost jumps to 345k for 6KW three phase system all included, about 45k per KW 45k 3ohase invertor, 30k for frame work, rest is all fees and bribe money. Selco is the vendor.
For context I run a EV and my monthly bill is 5-6k approx 500 to 600 units. 3k home-3k EV
For context I run a EV and my monthly bill is 5-6k approx 500 to 600 units. 3k home-3k EV
alap4m
Forerunner
As @superczar claims, "you get better ROI by keeping production slightly less than consumption instead of the reverse."
By that logic, get the 5KW plant.
Incidentally, a jump of INR 60,000 for a 6KW 3Phase plant isn't that prohibitive from a Single Phase 5KW plant.
The 3 Phase Array has its own benefits.
Additionally, your calculations do not match:
45K/KW. For 6KW = 270K
+ 45K 3Phase Inverter
+ 30K for framework
Adding the above comes to 345K.
Where is the "Rest" for Fees and Bribe money?
Spurs09
Beginner
Not for the water heaters . 15 k is not much compared to the cost of a 15ltr one . Especially if you have 2-3 bathrooms
In Bescom the sanctioned load = max capacity solar you can install. Increasing sanctioned load itself costs a lot due to bribes .
Heisen
Herald
I read this somewhere.
If your sole purpose of installing solar panel is to save money, it's smart to consider more than just your electricity bill savings. Think about the total cost of installation and compare it to what you'd earn if you kept that same money in a bank.
For example, if you spend ₹X on solar panels today, you expect to recover that cost over the years through lower electricity bills. But if you had instead put that ₹X into a fixed deposit or savings account, it would earn interest.
So, to really break even on your solar investment, the money you save on power should be at least equal to (or more than) what you would have earned in bank interest over the same period.
This helps you understand the true value of your investment, not just in terms of energy, but also in terms of smart money decisions.
Is this true?
If your sole purpose of installing solar panel is to save money, it's smart to consider more than just your electricity bill savings. Think about the total cost of installation and compare it to what you'd earn if you kept that same money in a bank.
For example, if you spend ₹X on solar panels today, you expect to recover that cost over the years through lower electricity bills. But if you had instead put that ₹X into a fixed deposit or savings account, it would earn interest.
So, to really break even on your solar investment, the money you save on power should be at least equal to (or more than) what you would have earned in bank interest over the same period.
This helps you understand the true value of your investment, not just in terms of energy, but also in terms of smart money decisions.
Is this true?
alap4m
Forerunner
I can be sure that the money invested in installing an On-Grind Solar Panel is WAY BETTER than Money kept in an FD.
Yes, the Earnings Per KW are Lower than what the Consumers Pay to the DISCOM Per Unit consumed.
However, Solar Panels have a Warranty/Assured Service Life of 25 Years. In other words, they should work for a LONG time.
Secondly, Money earned on an FD is TAXED. Money Earned on an On-Grid Plant is deducted/proportional with the Units Consumer Consume. You are essentially making your Electricity Consumption FREE, which is NOT taxed.
Thirdly, investment on an On-Grid Plant is recovered between 4-8 years. Thereafter it is FREE.
Essentially, an On-Grind Plant (at least until the time Govt. is Subsidizing the installation) is a better investment option.
nikola
Contributor
I can agree BUT
In last 10 years buyback price per unit of electricity is reduced from 10rs per unit to 2.83rs and govt. will keep reducing it as more and more people will install solar.
Also most of solar panel manufacturer give warranty of 20-25 years on manufacturing defect only and when you properly maintain solar, so claiming that warranty after 10-15 years will be pain in S looking at indian consumer protection rules.
Except from solar panel all other electronic stuff come with max 1 year warranty to keep in mind.
Solar technology is keep evolving so every few years there will be new more efficient solar will come into market.
(I think in near future govt. will also stop giving total generated unit deduction directly from consumed units, why because its not profitable for them just like they did all thing for EVs)
(For me i think unless you do hybrid off grid system i.e like tesla/anker power wall, solar is profitable for now but may not be after few years)
alap4m
Forerunner
All interesting points. Hence, I will add, Solar goes way more than just saving or investing money.
It is a way to make Electricity Consumption FREE. Buyback Price of Units produced from Solar Plants is abysmally low compared to what Consumers PAY for Electricity. Hence, Consumers should ideally Commission Solar Plants that mostly fulfill their need, with a little over and above to keep Electricity Bills at Zero. Commissioning Large Solar Panels with the intention of "Making a Profit" is NOT a good investment idea.
Ideally, Solar Plants are a good option for people who consume between 200 and 500 units Per Month of Electricity. Such people should install anywhere between 3KW and 5KW Capacity Solar Plants.
nikola
Contributor
Also forget to mention my friend used to work for a solar mfg company, they have tie up with some us based company to produce solar panel that are way more efficient than we are using in india, and they are so strict about their contract to not sell any single panel in india. Only for export to US. So we are lacking in efficient panel technology.
Go through the thread, but he doesn't mention the bribe cost payed to escom and the price he quotes is without 12% GST on solar panel and inverter hardware.
Structure and installation has additional 18% gst.