How Efficient Are Modern Solar Panels

Last Updated: March 21, 2020

When you go for solar panels in the market, you often hear the word “efficiency” around you. We will tell you what exactly that word means and how much it does matter when considering solar panels. So when technology is becoming concrete, accurate and soaring, see how efficient are modern solar panels today. When doing business of solar panels and investing in it is becoming easier, let us see how all that impacts on the solar panels market.

So let’s talk about efficiency first. The efficiency of a solar panel is converting the rate of sunshine falling upon it in the usable electricity. So if a solar panel has an efficiency of 20% then it means it can convert 20% of the sun’s rays that fall upon it.

let us also define solar panels in short, panels that convert sun rays into Convertable energy using solar Inverters.

This article aims to let you know what factors impact efficiency and which panels are currently most efficient. And at the last, we will tell you how efficient are modern solar panels.

Factors that Impact on Solar Panels’s Efficiency

So several factors impact the efficiency of solar panels, some of them are following;

  • Reflectance
  • Conduction efficiency values
  • Charge carrier collection and separation efficiency
  • Thermodynamics efficiency
  • Placement and orientation
  • Weather condition

Suppose we have two panels with the same size if one has a 24% efficiency rating and the other has a 16% efficiency rating, the 24% efficient panel will produce 50% more kilowatt-hours (kWh) of electricity under the same conditions as the 16% efficient panel. Thus, maximizing energy use and bill savings are heavily dependent on producing best-tier solar panel efficiency.

How to assess a solar panel’s efficiency? Well, to determine the solar panel’s efficiency, panels are tested under some conditions i.e irradiance of 1,000W/m2 and temperature 02% at Standard Test Conditions (STC). You can say this is equal to a sunny day with a 35-degree Celcius temperature.

Efficient panels

Most Efficient Solar Panels

Monocrystalline and Polycrystalline solar panels are the most efficient solar panels with reasonable price and life span. If you already know about Monocrystalline and Polycrystalline then skip this and very next paragraphs because we are gonna tell about them in this. Monocrystalline solar panels are also known as single-crystalline cells. We use pure silicon to manufacture it. Their efficiency is around 25%. Polycrystalline solar panels are also known as multi-crystalline cells. Their efficiency is around 22%.

Monocrystalline panels are more expensive and more efficient than polycrystalline. If we talk about the life span of them are almost equal. They both look aesthetic by having black hue and blue-ish hue colors.

Polycrystalline & Monocrystalline Solar Panels

SunPower, Solaria, REC solar, CSUN, and LG are known for their efficiency. Most solar panels are efficient between 16% to 20%. In some solar panel cases, efficiency touches 23% but it happens barely. But the majority of solar panels are below 20%.

We did SunPower and SolarCity solar panels review so if you are interested in the above-mentioned companies, give them a read.

Two years from now, Monocrystalline solar cells having efficiency recorded 26.7%. The efficiency of commercial wafer-based silicon modules rose from 12 to 17 percent in the last past 10 years.

Solar Panels Efficiency

Final Verdict

So the final verdict is today’s time solar panels are 20% efficient for residential applications usually and 40% for large scale power utility applications. The highest efficiency has come in an account of the record is approximately 23%. Over time, solar panel technology is surging and prices are dropping every day. There are still some glitches present but we all know that can’t get fixed overnight. Technology is always on the positive side and the factors we have mentioned above also matter most. Climate is showing weird behavior as we all know that climate is changing rapidly because of using an excessive amount of carbonic material. Developed countries started lessening the use of fuel, gas, etc but if we talk about underdeveloped or developing, they are still using fuel for their common purposes.


Although tariffs and other hurdles have dulled the market, solar market growth surged. The latest R&D is boosting up solar panels’ efficiency. New technologies like perovskite-based material are lowering the cost of production.

There are panels apart from standard solar panels having an efficiency of 25%. People are investing in the solar panels industry and that is why every organization tries to give more customizable, resilient and flexible solar panels. So just because of competition, you are gonna get more efficient solar panels as much as the can give.

The thing to keep in mind: Efficiency is not the only one you should consider while assessing a particular solar panel, Converting at low cost and high supply rate does matter too.

Factors to Consider Buying Solar Panels

There are many factors to consider that these are the main factors;

The Future of Solar Power

Skyrocketing advancements in material science, solar capturing and battery storage are driving our future of solar abundance.

Maximum Production: If you want to use more electricity or want to ensure that you buy less electricity as much as possible but you have limited roof space. You have no way other than choosing efficient solar panels.

You know why we are so hopeful regarding modernization and efficiency: Because every day the sun rises and sets, every five days, the sun provides earth as much as supplies of the coil, natural gas, coal, etc. If we save 6000th of Earth’s solar energy, we can meet our all daily requirements. Prices are not gonna surge, Efficiency will continue to soar. There was a time when the solar panel had an efficiency of around 5%.

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