Today, no one should doubt that renewable sources are the future of the energy market. The pressing problem of environmental pollution has just been added to the drastically rising fuel prices and sanctions imposed on one of their main suppliers, i.e. Russia. It is therefore hardly surprising that the European Union wants to accelerate the process of implementing green energy, and the average consumer is looking for ways to reduce bills. One of the solutions that is rapidly gaining popularity are photovoltaic installations. If you are also planning to install photovoltaic panels in your company or the building you manage, be sure to check out our product overview!
From this article you will learn:
- what determines the quality of photovoltaic panels,
- which manufacturer of photovoltaic panels enjoys the greatest recognition,
- how to choose the best photovoltaic panels.
Check out photovoltaic panels at the Onninen wholesaler
From what angle should photovoltaic panels be assessed?
To prepare an overview of photovoltaic panels, you should pay attention to both their various parameters and the reputation of the manufacturers supplying them to the market. The criteria worth assessing in the case of photovoltaic panels include the following parameters:
- Rated power – expressed in watts and determining the efficiency at which photovoltaic panels operate under standard test conditions. They assume a solar radiation intensity of 1000 W/m 2 and a cell temperature of 25°C.
- Efficiency – defining the ability of panels to convert sunlight into electricity.
- Performance guarantee – the percentage of original power declared by the manufacturer that the panels are expected to retain after a specified period of time (usually 25 years).
- Reputation of the manufacturer - although the quality of the panels is of course crucial for the operation of a photovoltaic installation, it is easy to imagine situations in which customer service provided by the brand becomes more important. This includes product warranty, complaints and technical support.
We will compare all the above parameters - power, efficiency, performance guarantee and product warranty - with the prices of the panels, making this proportion the key evaluation criterion in our review. Please remember, however, that the amounts we provide are starting values. Installers registered with Onninen can count on individually calculated discounts, and therefore - much lower prices.
Photovoltaic panels in the wholesale offer
Overview of photovoltaic panels
In our review, we took into account models from the largest photovoltaic panel manufacturers in the world. All of them are worth recommending solutions, so remember that the final influence on the selection of specific modules should be the conditions of their operation and the building's demand for electricity.
JA Solar JAM72S30 545/MR Deep Blue 3.0
The monocrystalline photovoltaic panel from JA Solar, made using half-cell technology, guarantees high efficiency and durability. This is due to, among others, the use of half-cell technology, which, in addition to generating higher output power, works better during everyday operation as a result of a lower power temperature coefficient and reduced impact of shading on energy production.
JAM72S30-545/MR modules have a power of 545 Wp and an efficiency of 21.1% . The product warranty period is 12 years .
SHARP NU-JC 370W Half-Cut
The Japanese SHARP is a real giant on the electronics market. Not only its electronics and household appliances, but also its solar panels, are highly appreciated. By investing in products of this brand, you do not have to worry about access to warranty or customer support. Nothing should harm its established and stable position in the coming years. SHARP's wide range makes choosing photovoltaic panels exceptionally simple. Everyone will easily find modules perfect for their installation.
The NU-JC 370W Half-Cut model has a power of 370 Wp and an efficiency of 20% . Half cut cells are used, thanks to which the panels are characterized by increased resistance to partial shading as well as lower internal losses. The product itself is covered by a 15-year warranty, while in the case of linear output power, the manufacturer guarantees a 25-year warranty. SHARP modules are a great choice for those looking for exceptional performance and elegant design.
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Longi Solar LR4-66HPH-370M 9BB
Longi Solar is one of the absolute largest producers in the photovoltaic industry. The history of this Chinese brand dates back to 2000, although it only started using solar panels seven years later. Its product range includes various types of monocrystalline modules, including double-sided and half-cut models.
The LR4-66HPH-410M photovoltaic panel has a power of 410 Wp and an efficiency of 20.5% . After 25 years, its efficiency should not fall below 84.8% of its original value, making it an extremely attractive choice. Low LID Mono PERC technology is responsible for reducing the rate of power degradation and high efficiency. It is also worth noting that Longi Solar photovoltaic modules are often awarded for their durability. The product warranty is 12 years .
Longi Solar panels represent very high quality, which goes hand in hand with an affordable price. Therefore, it is an ideal solution for most investors on the Polish market.
Ja Solar JAM54S30-410/MR
The next modules we present come from a Chinese manufacturer, which is the leader in the number of photovoltaic panels sold. Ja Solar was founded in 2005 and quickly gained an advantage over the competition. Today, the position of this brand is beyond dispute, so its products can be safely considered to be a reasonable and future-proof solution.
JAM54S30-410/MR monocrystalline panels are characterized by an impressive power of 410 Wp and a very high efficiency of 21% . They achieve excellent results in PVEL durability tests and have lower power losses compared to the competition. All thanks to the use of half-cell technology, which translates into lower internal resistance and better operation during everyday work. The main reason for choosing Ja Solar photovoltaic panels is that they are available at very attractive prices, combined with above-average quality. They are covered by a 12-year product warranty and a 25-year warranty against efficiency reduction up to 84.8%.
In terms of value for money, Ja Solar modules are actually as interesting a solution as the Longi Solar panels, which we described in the earlier part of our review. Their advantage over the rest of the presented products is determined only by slightly higher efficiency and slightly lower cost.
Trina VERTEX S TSM-405
Another Chinese manufacturer – Trina Solar. This brand was established in 1997. During this time, she managed to gain very valuable experience in research, production and sales of photovoltaic solutions. It is a dynamically developing company that is also recognized on the Polish market.
The VERTEX S TSM-405 module is not only an elegant design, but above all, excellent technical properties. It is distinguished by a power of 405 Wp and the highest efficiency presented in this review - 21.1% . Like other Chinese manufacturers, Trina declares 84.8% efficiency after 25 years. However, the advantage of this brand comes mainly from a 15-year product warranty and significantly lower prices.
Although the key parameters of the Trina module seem comparable to products from other Chinese brands, the longer warranty and lower price make it by far the most attractive choice in our review.
You will find good photovoltaic panels in Onninen!
If you are designing a photovoltaic installation or are looking for a way to reduce bills in the building you manage, check out the assortment of our online wholesaler. Here you will find efficient modules from leading manufacturers. Onninen Technical Advisory Department will help you choose the best products!