Best Solar Panels in India 2021 – Reviews, Efficiency and Price

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Solar panels can save thousands of dollars over time, but they have an upfront cost. We dive into the best solar panels to buy, along with reviews and a detailed buyer guide.

If you’re in a hurry, we think the Eclipse Renogy 100W 12V solar panel is the best choice for most people looking to build their own DIY solar system.

Read on to find out why, as well as our other recommendations for the best solar panel for different uses.

Our Top Pick

Last update on 2022-11-24 / Affiliate links / Images from Amazon Product Advertising API

Top 10 Best Solar Panels To Buy In 2021

Last update on 2022-11-24 / Affiliate links / Images from Amazon Product Advertising API

10 Best Solar Panels Review

Bestseller No. 1
Topsolar SolarFairy 100W Portable Foldable Solar Panel Charger Kit 18V DC Output for Portable Generator Power Station + 12V RV Boat Car Battery + USB & Type C for Cell Phone Tablet
  • 【Designed For Most Portable Power Station】The 19V DC port is specially designed for charging portable power stations and equipped with cables and connectors of different specifications
  • 【USB Smart and Fast Charging Technology】 Dual USB Ports QC3.0 & 2.0 (5V/9V/12V 2A max), and the USB-C port support PD3.0.Designed for smartphones and tablets (compatible with iPhone, iPad, Samsung Galaxy), GPS, digital cameras etc. Perfect for outdoor life and even unexpected power outages. The build-in smart IC chip intelligently identifies your device, and maximizes its charging speed while protects your devices from over charging and overloading.
  • 【Foldable&Portable】After being folded, the size is only 9.84*7.87*2.36 inch. You could easily pack it into backpack or trunk to explore the world. At the same time, the panel is equipped with adjustable brackets.You could adjust the angle of the solar panel at will to obtain a higher output power.
  • 【Powerful High Conversion Efficiency】 With high efficiency monocrystalline solar cell, you will get greater power efficiency even though the panel is smaller than a traditional model Maximizes system output by reducing mismatch loss. It performs better than similarly rated polycrystalline solar panels at low-light conditions
  • 【Durable】 The solar panel is fully Laminated, made by advanced laminated technology and long lasting ETFE material. NOTE:Before test the 14.4V port voltage, need to connect a load/battery to activate.
Bestseller No. 2
Solar Panel 100W, Foldable Portable Solar Panels, IP65 Waterproof with USB QC 3.0 and DC Output Port, Solar Power Panels for Camping Hiking Climbing RV Phone PC Portable Power Station Backup Generator
  • Made for Solar Power Generators: Vattix 100 Watt Portable Solar Panel Charger Includes USB and DC. The solar panels portable compatible with the most solar power generators in the market. Compared with traditional low-power solar panels, our solar panels can provide up to 100W power output within 14℉ to 140℉ working temperature, which ideally meets your almost outdoor power charging needs.
  • Smart Charging Technology: The solar panels portable built-in IC chip intelligently identifies devices smartly, auto maximizes portable solar panels charging speed while protecting devices from overload, overcurrent, overcharge, and fail-safe. The small solar panels equipped with 1*DC output (100W 18V), 1* USB QC 3.0 (12V/1.5A max), and 1*USB A(5V/2.4A max) provides 4 times the faster charging speed and can charge multiple devices at the same time.
  • High-Efficiency Conversion Rate: Under the same conditions, portable solar panels for camping made of monocrystalline produce more energy than other material camping solar panels. Monocrystalline solar panel brings higher conversion efficiency up to 23%, and 100 watt solar panel can meet most outdoor backup generator needs.
  • Foldable & Portable Design: The portable solar panels looks like an easy-to-carry briefcase when unfolded. Foldable solar panel can hang on your RV, van, or just spread out on the beach. The adjustable kickstand can keep a better angle to convert the solar power energy charge.
  • Waterproof Durable Solar Charger Kit: Camping solar panels waterproof and Oxford PVC material case can prevent rain and snow, also with rubber handle and bracket stand can maximum output energy efficiency. Ideal for outdoor activities and even unexpected power outages. This solar panel has a 3-year warranty. Please note that the inside junction box is not waterproof and please keep it dry.
SaleBestseller No. 3
SOLAR POPO 100W Portable Folding Solar Panel Charger with USB Outputs for Family Camping Phones Tablets, Foldable Solar Panel with 4-in-1 Cable for Battery Power Station Generator
  • 【Portable & Lightweight】This Solar Popo G100 100Watt solar panel charger, 2 folds design, weighing 8.69lb (3.94KG) , allows you take easily when you do the outdoor activities, camping, hiking, RV & motorhome travelling, caravan trip, off-grid living and unexpected power usages etc.
  • 【High Compatibility & Fast Charging USB Ports】 Solar Popo 100W Solar panel is ideal for most 12Volt solar generators & batteries (Jackery, Goal Zero, Blutti, Rockpals, Ecoflow etc.) up to 600WH on the market, through 3 meters 4 in 1 cable of Anderson plug, DC 5.5*2.1mm, 5.5*2.5mm and 8mm connectors. With fast charging controller USB-A and USB-C outputs which are 5V3A 9V2A 12V1.5A , the mobile devices (phones, pads, tablets, digital cameras etc.) can be directly charged under the strong sunshine.
  • 【Powerful With High Conversion Efficiency Solar Cells】The most important materials, latest version Solar cells, which have high conversion efficiency rate more than 23%. With unique solid copper backing, each cell is incredible strong, you will get the greater power from Solar Popo 100W solar charger.
  • 【Durable & Strong Kickstands Design】Covered by long lifespan material ETFE on the surface, which is waterproof, durable and anti-scratch.With the special polyester fabric will protect the solar panel from water splashing, and please do not soak it in the water and place it under the rain. It is easy to set up on the ground with that flame resistance material kickstands, the elastic bands will help you find the perfect angle to abosob the maximum sunshine.
  • 【Package Contents】: SOLAR POPO (Model: G100) 100W folding solar panel, built-in fast charging controller with USB-A and USB-C output ports, built-in 3 Meters 4 in 1 cable with Anderson plug, DC 5.5*2.1mm, DC 5.5*2.5mm and DC 8mm connectors, user guide. 24 months warranty and technical customer support.
Bestseller No. 4
DOKIO Portable Foldable 100W 18v Solar Suitcase Monocrystalline , Folding Solar Panel Kit with Controller to Charge 12 Volts Batteries (AGM Lead/Acid Types Vented Gel) RV Camping Boat
  • 【WORKS RIGHT OUT OF THE BOX】--Unfold panel, just hook the alligator clips to the battery and it starts charging.The only thing you have to watch out for is the polarity on the battery when connecting the clips.
  • 【CONVENIENT TO CARRY + CABLE LENGTH UP TO 9.8FT!】-- The 9.8FT meters cable allow solar panel to follow the sun without worrying about power station over heating.with rubber handle, Ideal for hiking, camping,caravan, RV, boat
  • 【WITH ADJUSTABLE BRACKET】--You could adjust the angle of the solar panel at will to obtain a higher output power.The solar panel has the best charging efficiency at a 90-degree angle to the sunlight.
  • 【SAFE AND LONG LIFESPAN】--Smart PWM charging Intelligent protection against reverse polarity, overcharging, short-circuit, and reverse current.Integrated 5V 2A USB ports to charge phones USB devices.Corrosion-resistant aluminum frame provides extended outdoor use that ensures the panel can last for decades.
  • 【WARRANTY AND AFTER-SALES SERVICE】--25-year transferable power output warranty and friendly Customer service will help you solve any product problems promptly and quickly.
Bestseller No. 5
120W Portable Solar Panel, 18V Foldable Solar Panel with Adjustable Kickstand, Waterproof Solar Panels Kit Cell Solar Outdoor Equipment for Power Station, USB & Type C Output, for RV, Trip, Off Grid
  • 【HIGHER ENERGY CONVERSION RATE】 120W solar panels is made with premium monocrystalline silicon solar cells. The solar panel adopts multi-layered cell technology to generate energy from the sunlight and perform better with higher conversion efficiency that up to 22% than other conventional panels. It providing more energy and a longer lifecycle than conventional polycrystalline solar panels.
  • 【PERFECT CHOICE FOR OUTDOOR AND EMERGENCY LIFE】 This solar panels with an MC4 connector end makes it compatible with 99% of all solar generators on the market. 5 diffrent sizes of adapters ideal for off-grid camping and unexpected power outage. Solar panel for all 12V batteries ,with its 18V optimum power voltage.Protection against: overcharging, overload, short-circuit. Solar Panels features 1 * MC4 port, 2 * USB-A output port and 1* USB-A output port to charge 3 small devices directly.
  • 【EASY TO CARRY & ADJUSTABLE KICKSTAND】Weighing at only 9.8lb, this solar panel is foldable and handy with a folded size of 20.8 x 14.1 inches and design with a handle. Designed for portability and convenience, the 120w solar panel features a lightweight, foldability design with an incorporated zippered accessory pouch that sets up in a matter of seconds. And the kickstand leans on an angle that makes the solar panel to easily soak energy from the sunlight.
  • 【DURABLE & SPLASH-PROOF】 Made with advanced water resistant material, built-in premium PET on the surface and high quality oxford fabric on the back, the 120w solar panel is durable (Do not place it under the rain, or to soak in water). Coming with a waterproof zipper, can protect your accessories. Very suitable for Off-Grid, RV, travel, camping, hiking, picnics and other outdoor activities.
  • 【PLEASE NOTE】 Please pay attention to the buy one get one promotion when you place an order, we will give a free MC4 to DC cable. In order to obtain a better light energy conversion rate, we recommend that you adjust the solar panel to a distance of 30-60 degrees from the ground. The solar panel has 6 different paracord eye-hooks which can fastly hang it on an RV, rooftops,fence,tree. All in on design allows for fast mounting and securing.
SaleBestseller No. 6
FlexSolar 40W Solar Charger, PD 18W Fast Charge USB-C QC3.0 DC Output Ports Solar Panel Charger for Camping IP67 Waterproof Compatible with iPhone 14/13/12/11/Xs/X/8/7,iPad,Samsung Galaxy LG etc
  • 💼【PORTABLE & FOLDABLE】With a small size of 8.0x 11.1x 1.8 inches (when folded) and a lightweight design of 2.86lbs(1.3kg) that can be easily squeezed into your backpack, offering portability and simplicity, the hiking buckle makes it ideal for attaching to your backpack while hiking or walking around town. Eco-friendly and self-cleaning material E film provides lasting durability to protect against unpredictable weather conditions, and can easily withstand high temperatures.
  • 🚀【HIGH SOLAR CONVERSION & IP67 WATERPROOF】Highly efficient solar panels convert 24% of solar energy into free energy in enough sunlight, the most durable panels available, withstanding the elements and wear and tear better than conventional panels. This special ETFE polymer surface protects the solar panels from occasional rain or wet fog, and the three ports are covered with a rubber cover to protect them from dust or water damage.
  • ⚡【SMART IC CHIP TECHNOLOGY & SAFETY FEATURE】Built-in voltage stabilization and an innovative chip that detects your device's optimal or maximum charging requirements, so your device can be charged safely and quickly.
  • 🔋【WIDE COMPATIBILITY】Integrated USB(3.0), PD Type-C, and DC three charging ports, versatile to top up any power banks, phones, tablets and Type-C laptops and small capacity portable power stations. Integrated IC automatically detects the connected devices and provides the optimized charging, and an included LED light shows the charging status.The wide compatibility of the ports is enough to meet your charging needs outdoors.
  • 👍【PACKAGE & SUPPORT】You will get a FlexSolar Solar Charger, 2 Carabiners and User Manual. Note:Any clouds or coverings can affect the charging speed, although our solar chargers have an automatic restart feature, which we still recommend. If you encounter any problems, please feel free to contact us and we will reply within 24 hours.
SaleBestseller No. 7
ROCKPALS SP003 100W Portable Solar Panel for Solar Generator and USB Devices, Compatible with Jackery/EF/Bluetti/Anker/Goal Zero Power Station, Foldable Solar Panel Charger for Outdoor Camping Travel
  • MADE FOR SOLAR GENERATORS - With the included 10 different sizes of connectors, Rockpals 100 watt folding solar panels are compatible with most solar generators on the market. 8mm DC Adapter for Jackery Explorer/Anker/Goal Zero Yeti, 5.5*2.1mm for Flashfish/ROCKPALS 250/300/500W. Connect to the XT60 cable (B09QQRV4V8), Rockpals 100 watt panel solar is compatible with EcoFlow River Delta/Bluetti EB3A EB55; Connect to the Anderson cable (B0B1GW13C4), it is compatible with Jackery 1000/Anker 545
  • HIGH CONVERSION EFFICIENCY - The A grade 100-watt monocrystalline silicon solar cells provide a high conversion efficiency of up to 23%, generate more energy and perform better than conventional panels in strong sunlight, produce maximum power to charge compatible devices in the least time. Ideally suited for outdoor life, camping, RV trip, picnic, fishing, home emergency, off-grid living power outage supplies, and hurricane preparedness items
  • SMART CHARGING TECHNOLOGY - The built-in smart IC chip intelligently identifies your devices, and maximizes its charging speed while protecting your devices from overcharging and overloading. Equipped with 18W USB QC 3.0 and 18W Type C output, provides 4 times the faster-charging speed for your smartphones, tablets, etc. With a professional parallel connector, you can also parallel 2 SP003 100W solar panels to get more output to recharge high capacity power station faster
  • FOLDABLE & PORTABLE - Rockpals portable 100w solar charger is designed with a handle, convenient to carry wherever you go. Tie it to a car roof or a tree with the 4 hanging holes, and charge devices freely when you are driving, fishing, climbing, hiking, and anywhere you on the go
  • IP65 WATER-RESISTANT & DURABLE - Made from durable 1200D Oxford cloth, the solar panel is with IP65 high water resistant rate, endure all weather conditions, ideal for outdoor activities. Please NOTE: The junction box is not waterproof and please keep it dry.
Bestseller No. 8
DOKIO 160W 18V Portable Solar Panel Kit (ONLY 9lb) Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car Marine…
  • 【FOLDABLE AND LIGHTWEIGHT EASY TO STORE】-- This solar panel photovoltaic packs 160W of power yet is only 0.9inch(2.4cm )thick and weighs only 9lb(4.1kg), making it easier to mount,transport, hang, and remove.
  • 【COMPLETE KIT,WORKS OUT OF THE BOX 】-- Solar charger for all 12V batteries ,with its 18V optimum power voltage.Protection against: overcharging, overload, short-circuit
  • 【PERFECT CHOICE FOR OUTDOOR AND EMERGENCY LIFE】-- 9.85ft (3m) cable length from panel to controller, For most power stations (Jackery,Goal Zero,Ecoflow,Paxcess) and 12-volt batteries(AGM,LiFePo4,Deep cycle batteries),RV,car,boat,trailer,truck,pumpa,camping,van,emergency power
  • 【PUT A LOT OF POWER INTO YOUR BATTERY BANK】-- powerful high conversion efficiency with high efficiency monocrystalline solar cell, you will get greater power efficiency even though the panel is smaller than a traditional model.Maximizes system output by reducing mismatch loss
  • 【WELL PACKAGED, QUICK DELIVERY】-- Amazon US warehouse shipping, Receive goods in time,come with a 30-day money back Guarantee, 1-year warranty and forever support from DOKIO customer care.
Bestseller No. 9
ALLPOWERS 140W Portable Solar Panel Charger for Laptop Cellphone, Waterproof IP65 Foldable Solar Panel with MC- 4, DC, and USB Output, for Solar Generator, Power Bank, 12V Car Battery
  • ▶MC-4 USB and DC Output Methods: MC-4 Output can deliver 25A(max)current while the DC port only carry 10A, Dual USB port(5V/2.4A per port) for charging your 5V powered gadgets, and 18V DC output(18V/3A) for charging your laptop or 12V car battery and portable generator, the junction box parallel connecting port for connecting multiple foldable solar panel.
  • ▶High Efficiency: 140W solar cell is made from US, up to 22% efficiency, providing endless joice for laptop, power station,cellphone and other battery under sun
  • ▶Foldable & Portable:1/3 lighter than the same power of solar slicon. The total power increased by 1/3 in compare with the same solar panel size. Folded size only 22x14.2x0.2inch, 9.9lb, Great for traveling off the beaten path without access to electric and won't take up much room.
  • ▶Waterproof & Durable: Constructed with a durable and waterproof nylon and adjustable bracket to receive the most effective sunlight; The solar panel is FCC, RoHS, CE certified. Short circuit and surge protection technology keep you and your devices safe.
  • ▶Package Contents:ALLPOWERS 140W foldable solar charger, MC-4 to 5.5x2.1mm cable, MC-4 to Anderson cable, MC-4 to alligator clip, 5 laptop and power station connectors, instruction manual, 18 monthes warrantee and friendly customer service.
Bestseller No. 10
BRÜUN – 120W Portable Solar Panel – 2 USB Type A and 1 Type C Port - Perfect Off Grid Mini Foldable Water Proof Panel for Camping and Picnic with LED Indicator for Power Station Use
  • Lightweight: This Solar Panel is lightweight. Its unique design and practical handle make it easy to transport from one place to the other. Ideal to use for camping, roofing, hiking, picnic, and charging your mobile batteries.
  • Foldable Solar Panel: This Solar Panel’s Input Voltage range is 8.5-30V. In this solar panel, a heat protection switch is available and it can support up to 150 °C. This solar panel is foldable and you can keep it in any bag to transport
  • 3-USB Smart Charging: The build-in smart IC chip intelligently identifies your device and maximizes charging speed while protecting your devices from over charging. 2 USB A (Output 5V 2.4A) 1 USB C (Output 5V 3A) and 1 for DC Output.
  • Smart Protection: Short circuit protection available is this solar panel. BCI 1.2 Output Over-Voltage Protection range is 5.7-6.2V and PD, QC 3.0 Output Over-Voltage Protection range is 4.8 - 6.5 CC, DPDM V. Working temperature of the solar panel is -20-80 °C.
  • LED Light Indicator: LED light indicator available in this solar panel to indicate that the solar panel Is ON or OFF. When turn on the panel red light is working and when off solar panel is not working.

Last update on 2022-11-24 / Affiliate links / Images from Amazon Product Advertising API

What is a Solar Panel?

They are also known as PV panels. Solar panels are designed to convert the light emerging from sun. This light contains energy particles called photons which will be converted into electricity and used to power up electrical loads.

There are several applications that include telecommunications equipment, remote power systems in cabins, remote sensing, residential purposes and commercial solar electric systems.

How Does Solar Panel Work?

Solar panels are designed for producing solar energy. These panels have photovoltaic effect which will produce electricity from sun light. If you are wondering how it happens, then here’s how…

Sunlight contains photons which will knock off the electrons from atoms. This will generate the electric flow. To say in simple terms, the panels will convert the light energy into electricity.

Semiconducting material (mostly silicon) is the main component used for making solar panel. This material is responsible for generating electric charge flow in the form of DC (Direct current).

The DC should be converted into AC (Alternative Current) which is the form required to power up the appliances in houses. This form is achieved through micro-inverter or inverter based on the size of your home or requirements.

The inverter also ensures the energy acquired from solar power is used only when then electricity is not available from the general grid that supplies the electricity. It doesn’t require any manual attention to turn on/off to supply the power. Though solar panels work seamlessly to generate electricity, to achieve the maximum efficiency, you have to change the solar panel angles based on the season of year and location.

Best Solar Panels to Buy for Commercial Scale

In considering the top solar panels to buy for a commercial business, you’ll likely need a bit more scale than residential use. These solar panels are a bit more expensive but have higher efficiency and output.

1. SunPower Solar Panels

SunPower has been one of the best in breed solar panel manufacturers out there for the last decade. The Company has a rich history in solar panel manufacturing, and many consider them to be a leader in the solar industry.

SunPower designs, manufactures, and delivers a wide range of high-performance solar electric systems across the country for commercial, residential purposes.

The company started production of the high-performance interdigitated back-contact cells (IBC) in 2007. Since then, they are using this most efficient cell technology of the current time.

SunPower’s panels are much more efficient than the competition from 16.5% to 22.8%. SunPower’s basic solar panel comes with a 25-year warranty against any defects. You can read more about the company in our SunPower solar review.

2. LG Solar Panels

LG is one of the top electronics manufacturers and it’s only fitting that they would be one of the best solar panel providers for commercial use. LG also offers an Energy Storage System (ESS), which is a battery energy storage system that helps store and manage the dispatching of power.

LG Solar performs at the top end of the competition with a 17.4% to 21.7% panel efficiency rating. Like SunPower, you will also retain a quality 25-year warrant for performance and any defects.

3. Panasonic Solar

Next up is another brand that you’ve likely seen before. Panasonic is a high-quality electronics manufacturer that also produces top solar panels for your business needs. The Company pairs with local installers to ensure that you can get the right installation done for the right price.

With Panasonic Solar, you likely won’t be able to match the same efficiency as SunPower or LG, but you can obtain these panels for a better price.

This might help your payback if you don’t have to pay up for just as efficient solar. The efficiency of these solar panels is in the range of 16.1% to 20.3%.

In terms of the warranty, Panasonic offers a 25-year product workmanship warranty that guarantees 90.8% power production.

Why You Should Consider Going Solar

Basking in the sun can soothe your body and mind. However, you can also utilize sunlight in other ways that are more productive. Generating power by using solar panels is surely the best utilization of the surplus amount of sunlight.

By doing so, you can minimize your energy bills and get free energy for an extended period.  In addition, solar panels can generate power with 0% carbon emissions. Hence, you can play your role to protect the environment.

Not only this, solar panels can add value to your home by making it an energy-efficient and environment-friendly place to live.

However, you need to buy only the best solar panels for this purpose. It’s easy to order solar online.

Solar energy’s popularity is higher than ever before. With the climate crisis knocking on our doors, more and more countries, industries, and people, in general, are shifting towards solar power. But do you know how solar power works? You can understand the benefits of solar power even better when you fully understand how it works. 

Today you can see solar panels powering houses, shops, offices, schools, and several industries. In the US, solar installations surpassed 2 million in 2019, according to the Solar Energy Industries Association. Not only does it cut energy costs, but it is also responsible for reducing carbon emissions and creating new jobs. 

Yes, the solar panels can be expensive (although prices are still decreasing), but the long-term health and environment benefits are worth it. 

It’s important to note that solar panels are just part of the equation. Check out our DIY Solar Ultimate Guide for a complete background of what is requried to setup your solar system.

How Solar Panels Work

Solar panels produce solar energy. These panels produce electricity through the photovoltaic effect. The photons of the sunlight knock off the electrons from the atoms, essentially creating electric flow. In other words, the panels convert light energy into electrical energy. 

The panels are made of semiconducting material, which is generally silicon. This material is the element that produces electric charges. 

Now, this electricity is Direct Current (DC). It has to be converted into an AC Current that the electrical appliances in your home use. This is achieved through an inverter or micro-inverter depending on the size of the solar energy system in your home. 

At homes, the inverter ensures that solar power is primarily used and only when it is not available, the electricity from the grid is used.

You do not have to switch anything on or off. The solar panel system works seamlessly. You may have to change the angles of the solar panels, depending on your location or time of the year.

Types of Solar Panel Technology

To understand how solar panels work, you need to know the different types of solar panels and their construction.

There are essentially three types of solar panels, and each has different construction, performance, installation, and cost. This gives each of them their unique advantages. 

1. Monocrystalline

Monocrystalline panels are made of silicon wafers. These silicon wafers are stacked to create a rectangular shape of the panels.

The difference is in the composition of silicon.

Monocrystalline silicon wafers are cut from a single and pure crystal of silicon.

These have black cells.

The blackish appearance is because of the reaction of light with the pure silicon in the panels.

The back sheets and frames may not be black. The sheet can be black, white, or silver, whereas the frame is commonly silver or white.

2. Polycrystalline

Polycrystalline is a mix of different silicon crystals that have been melted together. These rectangular panels are covered by glass sheets. Polycrystalline panels are less expensive than monocrystalline panels.

However, they are also less efficient than their monocrystalline counterparts. 

These have a blueish shade as a result of the mixture of silicon crystals reacting with the sunlight. The light reacts differently with this mixed composition as compared with pure silicon crystals.

The back sheets and frames have similar colors to those found in monocrystalline panels. 

3. Thin-Film

Thin-film panels are made of a variety of materials. The most commonly used material is cadmium telluride (CdTe). Other materials include amorphous silicon (a-Si) and Copper Indium Gallium Selenide (CIGS). 

The CdTe lies between transparent conducting layers. There is another glass layer on top for protection. The a-Si panels are similar to monocrystalline and polycrystalline panels. However, they are not solid silicon wafers. The silicon is actually non-crystalized silicon placed on top of glass or plastic. 

Lastly, the CIGS thin-film panel has the materials sandwiched between two conducting layers.

It has electrodes on the outside to capture the power. Thin-film panels are not as efficient as monocrystalline either. 

However, they are the lightest. The best solar panels for your house depends on your budget, system, and needs. You commonly see thin-film solar panels as flexible solar panels. 

As their name suggests, these panels are very thin. The cells are, on average, 350 times sleeker than the crystalline cells.

However, thin-film panels overall look similar to monocrystalline and polycrystalline panels.

This is because of the thick frame of the panel. Nevertheless, these lie very close to the roof. 

How to Choose The Best Solar Panels

While choosing solar panels, you have to consider several factors. We have mentioned them clearly in the buying guide below. Read it thoroughly to make the right choice that satisfies your requirements.

1. Power

This factor provides information on the energy output capacity of the panel system (according to Standard Test Conditions). It is measured in terms of watts (w). The power or capacity of the solar panels has direct impact on the cost and usually compared in dollars per watt.

Watts provided represents the output of each module. For example, if you have installed 100W panel, then it will generate 100 watts hours of electricity every hour under ideal conditions. If you install 200W panel, then it will generate 200 watts every hour. When it comes to price, you will have to spend twice the amount for 200W compared to 100W solar panel.

Apart from price, output of the solar panel can also impact its size. For example, 200W panel will have a large size than 100W module. Solar cell types used in the product also impact the size of the solar panel.

The main factor to consider while analyzing the size of the solar panel you have to consider how much power do you need to power up the appliances. and moreover the solar panels should physically fit in the area while installing them.

If you have north facing roof space, then it is the most valuable place to install solar power real estate. Apart from north, west facing panels are also helpful. If in case, there is a chance you want to increase the solar panels, then make sure you have to enough space to install more. Or else, you may have to just to replace the whole model, even if it is working perfectly fine.

2. Efficiency

It represents how much amount of sunlight can the solar panel covert into electricity. While analyzing this feature you have to use the basic rule – higher efficiency means the solar panel will convert more sunlight into electricity.

Usually, most of the solar panels manufactured by major brands come with efficiency range of 14 to 22%. The efficiency of solar panel can also impact the output of solar panel. For instance, 300W solar panel has 17.89% efficient and 290W has 17.3% efficient.

3. Power Tolerance

It will determine how much the solar panel can deviate from its original stated power by the manufacturer. This deviation is usually expressed in watts or percentage. For example, 100W panel will have tolerance of +3% / −0% – means the actual power can vary between 100 to 103W. However, if the tolerance is +%W / -0W, means the actual input can vary between 100W to 105W in general conditions.

4. Temperature Coefficient

As already mentioned above, temperature can have an impact on the efficiency of solar panels. If you have to know how much impact will be there on the solar panel efficiency because of temperature rise, then you have to check out the temperature coefficient. It is represented in terms of percentage decrease in power output for every 1°C increase in temperature (above 25°C or 77°F). After this range, the efficiency will energy production by solar panels will decrease.

While analyzing this factor, you have to understand that solar panels will not work well in extreme sun (i.e., summers). For example, solar panels were tested at 45°C but no you may be experiencing 55°C temperature. If the solar panel is rated with temperature coefficient of 0.4% watt power, then to know the exact efficiency, you have to multiply it with difference in temperature (10°C).

Temperature coefficient can be different for amperage, voltage and wattage. Monocrystalline solar panels perform better than other types at higher temperatures. This factor isn’t most important one unless you live in an extremely hot climatic locality. Because heat has a major impact of the efficiency of solar panels as it reduces the output.

5. Performance Degradation

It’s common for solar panel to experience a decrease in performance over long term (like 25-years lifespan). After 1-year of solar panel installation, you can experience 2 to 3% decrease in the efficiency. And you will experience 0.2 to 0.7% degradation every year after that.

6. UL Listed

UL means Underwriters Laboratories – it is an organization with an experience of around 100 years. This organization will set the standards and performs safety tests to make sure the products are safe and efficient for public use. If you are going to install them in your home, then check out for UL 1703 standard certification.

7. Size and Weight

This factor is important to consider for people who don’t have limited roof space for installing solar panels. Dimensions of solar panels are mentioned in L x W x H. You have to choose based on your preference and space you can afford for the installation.

When it comes to weight, you should know how heavy they are. If your house roof top is not strong enough to handle the weight of solar panels, then you should opt for light-weight models.

9. Maximum Wind Load

This factor represents the tolerance of solar panels when there is maximum wind load. This tolerance is represented by manufacturer in pascals (Pa). Higher the pascals, better will the wind tolerance. Most of the solar panels available in market are have 2,400 Pa certification which is actually equivalent to 140 mph.

10. Cost Per Watt

For most of the people budget plays a major role in decision making process. Solar panels are available in different sizes and size plays a major role in the pricing factor. Full-sized panels come in 275 to 400 watts price range. Small panels are suitable for off-grid applications. Monocrystalline solar panels (100W) come within price range between $210 to $300. Polycrystalline solar panels (100W) range between $70 to $110. Thin film solar panels (100W) range between $180 to $230. If you want more than 100W solar panels, then the price will increase based on that.

11. Brand Reputation

What good is the product is it doesn’t last long or has any customer service to help you in the time of need. Usually, popular and well-known brands have good customer service. To know the brand record and how they behave with customers for their issues, we recommend to read the reviews of customers. It is better to choose a brand that has stable track record with solar panels.

12. Warranty

Most of the solar panels come with a warranty period which ensures the system functions smoothly for sure in that time duration. Warranty period of solar panels range from 10 years to 25 years depending on the manufacturer.

Benefits of Using Solar Panels

There are several advantages of investing in solar panels. We have mentioned them below for your reference.

  • Solar power is very economical and clean with almost no maintenance requirements. They are also considered as one-time investment for this reason.
  • Solar panels usually last up to 25 years and with less maintenance, they save a lot over long term.
  • Power transformed from sunlight is actually renewable and pure.
  • The panels don’t emit any fumes, carbon or greenhouse gas.
  • They are absolutely silent.
  • They are self-sustaining so you don’t have to worry about them much.

How to Calculate the Solar Panel Capacity For My Needs?

Before purchasing solar panels, you have to understand how much capacity is required to power up your house. For that, you have to calculate your exact needs…

  • Analyze how may and which devices you need power backup
  • Determine how many watts does each device use
  • Decide how many hours per day do you want the power backup

Below is the calculation that helps you decide…

First calculate how many watts hours per day does each device will need.

For example, 20W x 3-hours run time equals to 60watts.

Now add the watt hours of every device to know the exactly how much watts hours you require.

60 watt hours (device A) + 300 watt hours (device B) = 360 watt hours

How To Calculate Compatible Battery for Solar Panels?

Once the solar energy is absorbed through solar panels, the energy will be send into a battery for storage purposes. From battery, it will be distributed to appliances when required. You should purchase a battery that has enough capacity to handle your requirement.

Battery capacity of solar panels is measured in ampere hours. So, Energy Needs / battery voltage = Battery ampere hours.

For example, if we consider battery capacity of 12v battery system with 490 total watt hours.

So, 490 / 12 = 40.8 ampere hours

But batteries are not always 100% efficient all the time. So, let’s consider the battery efficiency as 80% ampere per hour.

So, 40.8 x 0.80 = 32.6 ampere hours

Now that you have got the exact requirement, you should consider purchasing a battery that has at least a little bit higher than the calculated total ampere hours.

Conclusion

Of all, my top pick will be Renogy 100W/12V Monocrystalline Solar Starter Kit because it was designed for entry-level candidates to professionals for understanding the concepts without any difficulty.

This starter kit mainly features the controller and PWM-technology that in turn responsible for the overall performance. Though the product is costly, for its easy installation process and portable nature made our list in the first place.

If you wish to have a solar panel in your home then immediately purchase the kit to save time and money spent on other resources.

Solar panel kit is perfect for newcomers who are fascinated to learn the interesting concepts and apply to real-time applications. It will definitely be a great asset for the children to get into the core electronics.

Just get it with a single click and tell us how you are benefitted in the comment section given below:

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