Guide Why you should install a solar rooftop system

[YeAhx]

I watched a video regarding to this topic a few weeks ago and thought I should share it here with you guys.

Seems to me like there are things to consider even after the initial investment such as quality of panels, usage, unit cost in your area, ROI, maintenance, area required for installation, Cloudy weather/location etc.
Where I live unit cost is 6.5rs per unit which is actually cheap so personally speaking after considering all the things above installing solar panels is not worth it at the moment. Maybe in the future if investment goes down and unit prices go up it might become worthwhile.

 

[alap4m]

I watched a video regarding to this topic a few weeks ago and thought I should share it here with you guys.

Seems to me like there are things to consider even after the initial investment such as quality of panels, usage, unit cost in your area, ROI, maintenance, area required for installation, Cloudy weather/location etc.
Where I live unit cost is 6.5rs per unit which is actually cheap so personally speaking after considering all the things above installing solar panels is not worth it at the moment. Maybe in the future if investment goes down and unit prices go up it might become worthwhile.

In Maharashtra, the Unit Cost is more than Rs. 15 Per Unit. It is insanely expensive.
Regardless of Unit Price, Solar is a worthy investment especially because the panels can last for VERY LONG time. And there's no major downside to installing solar inside a gated house.

 

[YeAhx]

In Maharashtra, the Unit Cost is more than Rs. 10 Per Unit. It is insanely expensive.
Regardless of Unit Price, Solar is a worthy investment especially because the panels can last for VERY LONG time. And there's no major downside to installing solar inside a gated house.

Indeed "major" being the word here because you do need to get it set up (installation can be a headache for someone because they will need to inquire about everything prior to it and then get it installed which I'm sure must take some time) also need a physical space for the panels itself and maintenance in the form of keeping the panels dust free otherwise you lose some power efficiency.
In that video I posted I read unit price in Maharastra can be as high as 15rs which is truly insanely expensive. In that instance ROI will be significantly faster/earlier and so investing in solar panels is no-brainer then. But if we disregard unit price (or assume it to be cheaper than average) then ROI can be up to 10 years and for most people investing 2-3 lakhs upfront into solar panel setup is not a small feat.
None the less, Solar panels are good investment and an eco-friendly alternative for us as India still runs mainly on fossil fuel. (was something like 70%-80% last I checked)

 

[k660]

Bifacial Panels matter primarily when you are going to mount them Vertically (I might be mistaken though)

When bifacial panels matter:

1. Vertical Mounting – Useful for fences, railings, or building facades where both sides get sunlight at different times of the day. Quite rare unless ones is rich.
Unfortunately this is also where they matter the least, least energy production ( i.e. in vertical position )
A future replacement for these is more transparent solar panels.
--------------
2. Tilted or Ground Mounts – When installed on a reflective surface (e.g., white roofs, sand, or snow), they capture additional reflected sunlight from below.
--------------
3. Tracking Systems – Single-axis and dual-axis trackers can optimize sunlight exposure to both sides of the panel.
--------------
4. Floating Solar Farms – Water reflections can boost rear-side generation.

 

[navino87]

We recently installed a solar power system at our home, consisting of three 7.25 kW units and one 3.6 kW unit. The total investment amounted to Rs. 12,50,000. Additionally, we paid Rs. 18,800 (4 x 4,700) for the net meter. We opted for Renewsys bifacial panels and a Polycab inverter. Yesterday, the 7.25 kW unit generated a total of 42 kWh, while the 3.6 kW unit produced 20 kWh.

 

[kiran6680]

We recently installed a solar power system at our home, consisting of three 7.25 kW units and one 3.6 kW unit. The total investment amounted to Rs. 12,50,000. Additionally, we paid Rs. 18,800 (4 x 4,700) for the net meter. We opted for Renewsys bifacial panels and a Polycab inverter. Yesterday, the 7.25 kW unit generated a total of 42 kWh, while the 3.6 kW unit produced 20 kWh.View attachment 227716

Awesome, but bifacial panels have one face buried in the surface? Am I seeing it correctly?

 

[navino87]

Awesome, but bifacial panels have one face buried in the surface? Am I seeing it correctly?

We chose bifacial panels over monofacial due to a few factors: stock availability, a negligible price difference. But due to some last-minute change of plan, we decided to lay the panels flat on the roof instead of raising them.

 

[k660]

We chose bifacial panels over monofacial due to a few factors: stock availability, a negligible price difference. But due to some last-minute change of plan, we decided to lay the panels flat on the roof instead of raising them.

Shouldn't matter much, to get real advantage of bifocal, surface needs to reflect significant amount of sunlight to begin with.

But, what I loved to hear was they were priced closely. I am also looking into bifocal panels.

Edit* hey @navino87 since it's bifocal can it be turned and it's other side used? Can that side generated the same amount of energy/power ?

 

[Chocpuddingfan]

Bros iam interested. How much would it cost to install?

 

[zeta30]

Hire a contractor
They take care of every, even subsidy forms.
Batteries are not necessary for on grid solar u will get the bill amount every month adjusted accordingly.

Bros iam interested. How much would it cost to install?

Depends on kw of solar panels installed & state subsidies

Bros iam interested. How much would it cost to install?

4kw produces max 16 units/day in summer! cost around 1.8l though variable

 

[navino87]

Shouldn't matter much, to get real advantage of bifocal, surface needs to reflect significant amount of sunlight to begin with.

But, what I loved to hear was they were priced closely. I am also looking into bifocal panels.

Edit* hey @navino87 since it's bifocal can it be turned and it's other side used? Can that side generated the same amount of energy/power ?

If I'm not mistaken, bifacial panels are essentially monofacial panels with the backplate replaced by glass, allowing them to capture light from both sides.

 

[chetansha]

This is really a great Quote, but is it AFTER factoring-in the Subsidy?
Also, wherever possible go for the Raised (high-rise) structure. This is important if you have buildings/houses nearby. If installing on a house that's isolated, or if you reside in a windy area, go for the Standard 4-Feet Structure. And if this structure is INCLUDED in the price, that's even better.
Bifacial Panels matter primarily when you are going to mount them Vertically (I might be mistaken though). Hence, it would better to go for the Adani TOPCon 575Wp.
Before you even begin, it would be wise to hire a "Government Certified" Electrician and get him/her/they to inspect the Electrical connections, and give you a go-ahead in writing. These electricians can significantly help in reducing any delays and avoid scrutiny.
There could be several small but important technical matters such as approved load, structural integrity report, local transformer capacity and safety reports. Hence, it would be wise to seek the help of the Vendor, or better yet, offer them some money to handle the relevant approvals.

Kondaas has a wonderful team, i had installed it from kondaas on 2016 itself.