How to Buy Best Solar Panels?

Buying Solar panels could be the single best decision that you have made not only environmentally but also financially. The cost and technology improvements are slowly making solar power plants a viable option not only for large institutions but also for individual buyers. Give yourself a pat on the back for this decision. The next big question is to chose the specific brand of solar panel. There are a large number of companies selling solar components and for a novice this could be a very confusing decision to make, since solar entails a huge one time investment. The final decision will depend upon a lot of factors such as your power needs and a reliable solar partner, who would not only be there to help you with your installation needs but also be around to serve its warranty.

Though it is important to study the technical parameters of a solar panel, the foremost step is to study about the fundamental aspects of the solar panel. Installing a solar system involves a huge amount of investment and it is a lifetime decision for your property. It is therefore, important to think on all lines. Metrics such as efficiency, warranty, temperature coefficient and durability will go a long way in deciding the number of panels required and the vendor, which will in turn determine the total capital expenditure.

Let’s check out a few leading solar panel brands in India, on the basis of the above mentioned factors.

#1. Efficiency

higher efficiency solar panels in india

The efficiency of a solar panel is calculated by the amount of sunlight it converts into electricity per unit of area. If a solar panel is more efficient the overall efficiency of the rooftop solar system also increases. Efficiency of panels play a major role in the effective working of the whole solar system and hence prudence must be applied while choosing the same. A more efficient solar panel results in lesser number of panels to be installed and hence will entail less capital outflow.

Tier 1 Chinese players like Trina Solar announced average efficiency of 17.8% for its industrially produced P-type monocrystalline cells while SunPower boasts of achieving new 24.1% solar panel efficiency record.

How to calculate efficiency of solar panel -

In below image, we have given formula about how can you calculate an efficiency solar module?

 Here, we are taking an example of Loom Solar 350 Watt Mono Panel,

Best solar panels by efficiency

#2. Warranty

Enhanced Performance Warranty of solar panel


Choosing a solar panel based on warranty is important as many companies might not be around to honour their promise later. The solar companies are facing constant challenge in the form of declining prices of products and many of the smaller players are finding it difficult to sustain. Solar panels are a long-term investment and customers want to work with a bankable partners, hence warranty plays an important role in determining who will be the solar panel seller.

Best solar panels by warranty

best solar panel by warranty

#3. Temperature Coefficient

solar panel temperature coefficient


While sunlight is important for the proper functioning of solar panels very high temperatures can lead to degradation. Temperature coefficient is measured as the effect of high temperatures on functioning of solar panels. The lower the temperature coefficient, the better.

Let's know about temperature coefficient,

Standard Temperature - 25 ˚C
If temperature > 25 ˚C, then what will happen,
  • Power will drop,
  • Voltage will drop, and 
  • Current will increase
For example, if you have installed 350 Watt Solar Panel and temperature > 25 ˚C (i.e. If an environmental temperature is 35 ˚C, then solar panel temperature will 45 to 55  ˚C ) , then you will get the following current and voltage
If temperature < 25 ˚C, then what will happen,
  • Power will increase,
  • Voltage will increase, and 
  • Current will decrease
For example, if you have installed 350 Watt Solar Panel and temperature < 25 ˚C (i.e. 15˚C), then you will get the following current and voltage

Best solar panels by temperature coefficient

best solar panel by temperature coefficient

#4. Durability

Outstanding Durability

The durability of a panel is estimated by its strength to endure heavy rains, hailstorms, high winds, excessive pressure, etc. Solar Panels in different countries undergo different stress test under varied environment conditions and external pressure. These panels are then given ratings by rating agencies in order for customers to compare and choose from.

Best solar panels by durability

Manufacturer Frame Size
Loom Solar 40 * 35 mm
Waaree 25 * 35 mm
Tata Power Solar 25 * 35 mm
Luminous 25 * 35 mm
LivGuard 25 * 35 mm
Vikram Solar 25 * 35 mm
UTL 25 * 35 mm
Renesys 25 * 35 mm
Adani 25 * 35 mm

planning to install solar panel for home and business

Some of the Best Selling Solar Panels in 2021

Shark Bifacial 440W /530W Solar Panel 

Shark - It is the super Hi-efficiency series of solar panels manufactured by Loom Solar. Shark Bi-facial is a solar panel that produces power from the front and backside. The guaranteed generation is 440 watt at STC while Bi-facial technology has the tendency to produce 20% more power.

Panel Type Maximum Power (watts) Maximum Efficiency Product Warranty Dimension (mm)
Shark Series Mono Perc  440W/530W 22% 25 years 2131 x 1047 x 35 mm
Loom 250W Mono Perc 250W 22% 25 years 1500 x 665 x 35 mm
Loom 125W Mono Perc 125W 22% 25 years 1020x665x35 mm
Loom 75W Mono Perc 75W 22% 25 years 775 x 665 x 35 mm
Loom 50W Mono Perc 50W 22% 25 years 430 x 665 x 35 mm


Luminous Mono Crystalline Solar Panel 335 Watt - 24 Volt

luminous mono solar panel

Luminous mono crystalline solar panel 335 Watt - 24 Volt is popularly used for installation in home or office. This is best solar panel with highest efficiency up to 19% and maximum wattage. It generates 8 amps current. the dimension of panel is 6.4 feet * 3.2 feet. It comprises of A+ Grade, anti PID polycrystalline cells and comes with 1 year manufacturer warranty and 25 years of performance warranty.

luminous mono panel performance

Microtek Solar Panel 150 Watt - 12 Volt

microtek solar panel

Microtek is a premium brand in the Indian Solar Industry. Microtek’s 150 watt solar panel is the largest selling model for homes. The panels comes with heavy duty anodized aluminum frames, MC4 compatible connectors and a junction box. This multi crystalline solar panel has 12V operating voltage with an output power of 150 watt. It comes with manufacturer warranty of 1 year and performance warranty of 25 years.

microtek poly panel performance

The Best Solar Panels according to customer reviews

solar panel reviews

Needless to say, reviews are very important. But how exactly do they influence purchasing decisions? In fact, according to our observation, 97% of participants said customer reviews factor into their buying decisions. 92% of consumers hesitate to make a purchase when there are no customer reviews, and 94% read reviews when they are available.

For this ranking, we choose our site Loom Solar, the leading solar consumer site for solar panel manufacturers and companies. Their website has thousands of reviews from Indian home and business owners sharing their solar panel installation experience and performance. This ranking provides great insight into which solar panels are meeting and exceeding customer expectations, as well as how they're performing in real-world conditions.

Browse and Compare Solar Panels by Efficiency, Customer Review, Technology here.

Watch Videos -

a. Best Solar Panels Buyer's Guide (in Hindi)


b. 4 Factors to consider while buying best solar panels (in Malayalam)

c. How to Buy The Best Solar Panels in India - Buying Guide & Reviews | সোলার প্যানেল কেনার আগেই জানুন (in Bengali)

हिंदी में पढ़े: सोलर पैनल लगाना चाहते है, ये हैं कुछ टिप्स!

What are some important features to consider when buying a solar panel?

Before purchasing a solar panel, you must ensure that you consider features and specifications such as the solar panel capacity, module size, cells type, glass quality, frame quality, mounting holes, and junction box with mc4 dc wire  to ensure you purchase a variant that meets all your requirements.

Which are the best solar panel brands available in India?

Loom Solar, Luminous, Microtek, Tata, and Exide are some of the best solar panel brands available in the Indian market.

Best quality solar panel manufacturersBest solar panelBest solar panel in indiaBest solar panelsBest solar panels in indiaHigh temperature performanceHighest performance panelLatest solar cell technologyList of the best solar panels in indiaLongest life panelMost efficient and reliable panelsPopular solar panel manufacturerQuality solar panelsReliable panelsSolar panel efficiencySolar panel qualitySolar panel reviewsSolar panel temperature coefficientSolar panel warrantyTop 10 solar panels


De Robert Omotosho

De Robert Omotosho

I will like to be your distributor in my country Ibadan Nigeria.
What is the quantity to be bought as a dealer in my country.
Our electricity watts is 240 voltage⚡️.
Coach Robert.



Please guide me to buy good quality and price efficient system for home.



Pl send cost solar system of various wattage for house hold use

Atulkumar Yedage

Atulkumar Yedage

wrong information given in this blog. Total Froud.

Rajendra Gowda badarli

Rajendra Gowda badarli

I want to ups solar system in my house 3kv

Ram Kishor

Ram Kishor

190watt 12volt or 180 watt 12 volt mono crystalline loom company Ka soler penal

Ram Kishor

Ram Kishor

190watt 12volt or 180 watt 12 volt mono crystalline loom company Ka soler penal

Neha Kumari

Neha Kumari

Hame ghar ke chhota panels chahiye…kitne kaa ayegaa.

Imran Sardar

Imran Sardar

Two 70 watt Dc chilling fan,
Two 9watt Led light,
One 32" Led tv
Keliye kitne watt ka panel lagane

shailesh  kumar pathak

shailesh kumar pathak

मेरे पास 850va का inverter और 150ah की बेटरी हैं मैं सोलर लेना चहता हूँ कितना panal और साथ मेंं क्या लगेगा
plz रिप्लाइ दे

Tito Aderinto

Tito Aderinto

I will like to be your distributor in my country Nigeria
What is the quantity to be bought as a dealer in my country
Our watts is 240 ,
Mr & Mrs Aderinto

Sadaquat Ali Khan

Sadaquat Ali Khan

I will never recommend any one to purchase the product from this company. Product quality is no issue. Very poor and worst customer service. Shipment delivered in 14 days without battery and there is no information share with me that battery will despatch separately. No reply in mail whatsapp and saying that will reply in 2 business hours. I have to cancel my ticket due to negligence of service. Now I have to wait another few days or month to purchase battery from other source and need to pay additional freight cost for this.

Bhagwati Fuels

Bhagwati Fuels

we need to install the solar system at our outlet.send us the details please


Maheep pandey

Maheep pandey

Give me Price for 3kw solar panel without battery



Pls share the prices of various watts solar we are interested to take delaer ship



PL send me the cost solar system of various watts.

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