Yash
Jinko Solar panel company (China) produces one of the most innovative solar panels in the world.
- It is listed on Shanghai Stock Exchange: (SSE: 688223)
- It has 12 production units in China, the USA, Malaysia, and Vietnam
- Over 35 service centers and 20+ Logistics centers.
- Jinko has its presence in over 160 countries around the world.
Jinko in News:
- New world record: Jinko’s highly efficient N-Type Monocrystalline solar cells achieved a conversion efficiency of 25.7%
- First in the world: Jinko solar reached the milestone of 100 GW of total solar panels.
Honors received by Jinko
- National Enterprise Technology Center
- Champion of Manufacturing
- National Technology Innovation Demonstration Enterprise
- Jinko Solar got listed on the STAR board of the Shanghai Stock Exchange in 2022
- No.1 in global module shipments for many years
- First solar energy company to join the RE100 initiative
- The first company to establish a vertically integrated production capacity from silicon material processing to wafer, cell, and module production in the industry.
Solar Panel series by Jinko
- Tiger series: N-type and P-type (Mono-facial and Bi-facial)
- Its Tiger Neo series has solar panels made of N-Type solar cells (we have both Mono-facial and bi-facial solar panels in this series)
- In Jinkos’s Tiger Pro series, we see P-Type based solar panels (both Mono-facial and Bi-facial)
- Cheetah Series: Up to 410 watts power (Mono PERC)
The technology of JinKo Solar Panel
Jinko is using the latest technology for its solar panels.
a) SMBB Technology
SMBB technology offers better light trapping and current collection
Its round-shaped multi-bus bars (MBB) trap light more effectively than the flat strips and improves current collection.
Bus bars are thin strips of copper or aluminum that connect solar cells together.
These multiple strips reduce the current path and hence improve the current collection.
In the round-shaped bus bars, more incident light is reflected towards the cell due to its shape.
Also, more cell area is exposed to the sunlight when connected together using round-shaped bus bars.
In a nutshell, round-shaped busbars help in collecting more solar energy and hence improve the efficiency of the solar panel.
b) Half-cut solar cell technology
In simple words, when you cut a traditional solar cell into equal halves and join them.
You get a half-cut solar cell-based solar panel.
Well, it is easier said than done.
This technique offers multiple benefits over conventional solar panels such as:
- Heat loss reduction
- Increase in the structural strength of the solar cells
- Solar cells become more tolerant to the shading loss
c) Hot 2.0 Technology
Its Hot 2.0 Technology makes it have lower LID/LETID degradations.
Its Tiger NEO series and Tiger series are more immune to the LID (Light Induced Degradation) effect.
Because they are based on N-type solar cell technology.
These types of solar panels are more induced by the LID effect.
In light-induced degradation, the solar panel losses up to 3% of its Pmax within the first few hours of its exposure to the sunlight.
But this effect is reduced in N-type solar panels.
Therefore, you find that they have lower LID degradation than the conventional P-type solar panels (that have 3%).
Also, these solar panels are LeTID (Light and elevated temperature induced degradation) resistant.
It is the degradation of the solar panel’s performance due to high sunlight intensity at higher temperatures.
After 100 hours of exposure to sunlight.
It can result in performance degradation of up to 10%.
Jinko solar panels are LeTID resistant.
d) PID Resistant
In PID (Potential Induced Degradation), there is a high potential difference between the solar cell and the module frame or the mounting structure that is grounded.
This causes the current to leak from the solar cell to the frame and you get less current to run your electrical appliances.
This degradation increases with time that can reduce the solar panel output by 30% to 40%.
e) Bi-facial solar cell technology
Bi-faciality increases the power output from 5% to 25%
Jinko also has Bi-facial solar panels.
These panels absorb sunlight from both sides and produce electricity.
This Bi-faciality leads to an increase in the power output of up to 25% of conventional solar panels.
Strength of Jinko solar panels
Jinko panels are strong enough to withstand wind pressure and the snow weight effectively.
Their snow load rating is 5400 Pascals.
It is the ability to withstand snow weight.
Let me quantify in terms of the height of the snow that can be deposited on its surface.
Snow load rating = (height) x (density of fresh snow) x (Acceleration due to gravity)
- The density of the fresh snow is 100 kg/m³
- Taking g = 10m/s²
- And Snow load rating is 5400 Pascals.
Filling all the values in the above formula, we get
The height of the fresh snow is 5.4 meters.
Therefore, the Jinko solar panels can withstand the fresh snow height up to 5.4 meters (that’s quite good).
Looking at its wind load rating (its ability to withstand the wind pressure).
It is 2400 Pascals.
It means that its solar panels can withstand wind speeds up to 225 km/hr.
The Temperature coefficient of power of Jinko solar panels
Jinko has 3 different temperature coefficients of power for its series of solar panels.
These are -0.30%/ᵒC, -0.34%/ᵒC, and 0.35%/ᵒC.
This metric tells us the amount of power any solar panel would lose with the increase in the cell temperature beyond 25ᵒC.
The lower value is preferred. The formula for finding the power loss (%) is:
Power loss (%) = (Cell temperature - 25ᵒC) x Temperature coefficient of power
(Lower is the temperature coefficient of power, less is the power loss).
Assuming cell temperature as 45ᵒC, the Jinko solar panels would lose 6% to 7% of their Pmax.
Warranties of Jinko
Long warranties give you peace of mind. We have 2 types of warranties on solar panels.
- Product warranty
- Performance warranty
Product Warranty
It is an assurance to the buyer that nay premature wear and tear, cracking of cell, damage of diode, and other defects occurred within a stipulated period.
The company is liable to repair or replace the product.
Jinko solar panels come from 12 years to 15 years of product warranty.
Performance Warranty
You get an assurance that your solar panels will produce a certain percentage of Pmax even after 25, 27, or 30 years.
The more is the percentage, the better is the performance.
Jinko offers 25 years and 30 years with different degradation such as:
- 30 years: 1% degradation in the first year and then 0.4% per year 2nd year onwards till 30 years
- 30 years: 2% degradation first year and the 0.45% per year from 2nd till the 30th year
- 25 years: 2% degradation first year and the 0.55% per year till 25 years
- 25 years: 2.5% in the first year and 83.1% in the 25th year.
Certifications
Jinko solar panels are:
a) PID Resistant
When a high potential is developed between the solar panel and the ground.
The current start leaking from the solar cell to the ground via the solar panel frame or the mounting structure.
This causes a loss of power.
Although this degradation is less initially.
But later, it may lead to a 30% to 40% loss in the power output of the solar panel.
But Jinko PID-resistant solar panel is immune to this degradation.
b) Ammonia Resistant
The excreta of animals release ammonia gas.
Ammonia gas is corrosive in nature.
If any solar panel is installed near this location, its output is impacted.
But Jinko’s ammonia-resistant solar panel works efficiently in this environment.
c) Salt and Mist Resistant
The solar panels installed near the coastal areas, decay more than those installed in other locations.
Because the moisture and salt content in the air accelerates corrosion.
But Jinko solar panel is Salt and Mist Resistant, making it perform well even in these conditions.
Price of Jinko Solar Panel
You find mono-crystalline 0ver 400 watts solar panel around Rs. 29/- per watt.
Putting it under an affordable price category.
Units produced by Jinko solar panel
A 3-kW solar power system (On-grid solar power system) using Jinko solar panels will produce an average of 12 to 15 units per day in the Indian conditions.
It will cost you Rs. 1,80,000
Assuming, a grid rate of Rs. 7 per unit.
This will save you Rs. 84 per day to Rs. 105 per day.
Or
Rs. 2520 per month to 3150 per month
Or
Rs. 30,240 to Rs. 37,800 per year.
Payback = (Rs. 1,80,000/ Rs. 37,800) to (Rs. 1,80,000/ Rs. 30,240)
Payback = 5 to 6 years
Solar Feasibility Spreadsheet: Size, design and know the financial feasiblility of the solar power system in minutes
Pros of Jinko
- Latest technology
- It is a brand with a wide presence
- Affordable Price
- Long Warranties
- PID resistant
- Ammonia Resistant
- Salt and Mist Resistant
Cons of Jinko
i) Temperature coefficient of power
Although Jinko offers a low-temperature coefficient of power.
But we see temperature coefficients of power as low as -0.26%/ᵒC from solar panel brands such as REC and LG.
Jinko needs to consider the low-temperature coefficient of power values in order to increase its share in hot regions.
b) Wing Load Rating
Its wind load rating is 2400 Pascal.
That is fairly good enough and it is able to sustain a wind speed of up to 225 km/hr.
But there are coastal areas that are near the sea that experience wind speed beyond this.
BLUETTI AC200MAX + 2*B230 + Solar Panels / Solar Generator Kit – $9,049.00
from: BLUETTI ENERGY PTY LTD
My Final thoughts on which series I choose
I live in an extreme climate where the day temperature in summer can go as high as 45 degrees.
And in winter the temperature drops near the freezing point.
Therefore, I need efficient solar panels with a low-temperature coefficient of power, a wide temperature operating range, and long warranties.
My choice would be either Tiger or Tiger NEO series solar panels.
- Tiger NEO N-type with-0.3% per degree temp coefficient of power
- Tiger N-type with 15 years product warranty and temp coefficient of power is -0.34% per degree.
Online Solar Course: Size, design and know the complete financial feasibility of the solar power system. (An 3+ hours interactive solar course)
