7 myths dispelled about solar panels and their efficiency

When it comes to installing solar panels, some people may be hesitant to adopt such a system because of what they have heard or read on the Internet. There are many myths about solar energy, but you will be surprised to learn that many of the common beliefs about it are false. In this article we will dismantle 7 known myths about solar panels and their efficiency.

Myth #1: Solar panels don’t work on cloudy days or in winter

The myth that solar panels don’t work on cloudy days or in winter is quite common, but it’s not true. The operation of solar panels is based on capture the sunlightnot heat. Therefore, even on cloudy days, they can generate energy. Furthermore, it is possible to connect storage batteries to solar panels, so that you can benefit from solar energy even at night. It’s true that energy production can decrease in low light conditions, but it doesn’t stop completely.

Additionally, there are technological innovations that can increase the efficiency of solar panels in low-light conditions. Bifacial solar panels, for example, can capture light from both the front and back, allowing them to generate more energy.

As for the use of solar panels in winter, they can also produce energy in this case. Although snow can cover the panels, most systems have a tilt angle that helps the snow slide. Furthermore, the reflection of light from the snow can even increase energy production.

While the myth persists, this is the reality Solar panels can work efficiently even on cloudy days or in winter. With technology constantly evolving, the future looks bright for this form of renewable energy.

Myth number 2: Solar panels are too expensive

In fact, the initial costs of purchasing and installing solar panels can be substantial. Depending on their size and type, the price can vary from a few thousand to tens of thousands of euros. However, these costs must be analyzed in context long-term savings.

Since solar energy is virtually free once the panels are up and running, your energy bills will decrease significantly. Added to this is the Casa Verde Program, which offers financial support for the purchase and installation of photovoltaic panel systems for the production of electricity. However, there are various tools for financing photovoltaic panel systems. Find them here!

Myth #3: Solar panels require expensive and difficult maintenance

Contrary to common myth, solar panels does not require complex maintenance. They actually need periodic cleaning to ensure there is no dust or dirt blocking the sunlight. Depending on the location and environmental conditions, this may be necessary once or twice a year, but it is not a task that requires great effort or special technical knowledge.

Maintenance costs for solar panels are also much lower than is generally believed. This is also why some manufacturers offer tra 10 and 25 year guarantee for photovoltaic panels.

While exact costs may vary depending on system size and location, they generally only include cleaning the panels and periodically checking the system to make sure it is working properly. On average, the annual maintenance costs of a residential solar system can vary between 500 and 1000 Lei, a figure much lower than the savings achieved by using solar energy.

Myth number 4: Solar panels aren’t that efficient

In recent years, solar panel and inverter technology has made significant advances, with new types of panels and equipment capable of converting more solar energy into electricity than previous versions. The average efficiency of solar panels has increased in recent years 10 years about 15% to 20% and it continues to grow. [1]

But you might wonder why they don’t have a 100% efficiency rate. Some of the sunlight will be reflected by the panel or will be transformed into heat instead of electricity. Additionally, solar cell materials cannot absorb all types of light that make up sunlight, such as infrared light. The record efficiency for a solar cell at room temperature under normal sunlight conditions is 39.5%, but these cells are too expensive to be affordable. [2]

The truth is that the sun produces an enormous amount of energy. In one hour, enough sunlight reaching the Earth’s atmosphere is enough to meet the electricity needs of every person on Earth for a year. [3]

Considering this huge source of energy, commercially available solar panels provide enough power to meet the needs of your home. But solar technology continues to advance and improve every year.

You can find more information on this topic in the article: What are the most efficient photovoltaic panels.

Myth #5: Solar panels can’t power an entire home

The technology behind solar panels has evolved significantly over the past few decades. Modern solar panels can generate enough energy to power an entire home, even in regions with a less favorable climate.

On average a family needs approx 10-20 solar panels to provide enough solar energy. However, geographic location, home size, and solar panel specifications can affect the exact number of solar panels needed for your home. [4]

Storage batteries play an essential role in providing a home with solar energy. They allow you to store the energy generated during the day for use at night or on cloudy days. Solar energy thus becomes a constant source of energy, capable of guaranteeing the energy needs of a home throughout the year.

Myth number 6: Solar panels can damage your roof

The myth that solar panels can damage the roof of a house is common, but completely unfounded if we refer to their correct installation. It is essential to understand that, like any other construction or installation work, success and durability largely depend on the professionalism and experience of the installation team. Therefore, to avoid damage to your roof, choose a reliable professional to do the installation.

It is also important to remember that, once installed correctly, solar panels not only do not damage the roof, but they protect it. They act as an additional layer of protection against atmospheric agents, such as rain, snow and wind, effectively bringing benefits to the integrity of the roof.

Myth number 7: Solar energy is unreliable

In reality, solar energy is a very safe and reliable source of energy, provided the panels are installed and maintained properly. While weather conditions can affect energy production, this is not a major issue. Solar panels are able to generate energy even in low light conditions, making them a constant and reliable source of energy.

Furthermore, storage batteries allow the accumulation of excess energy produced during the day and its use when solar panels cannot generate energy. Therefore, solar energy becomes a constant source of energy and not just an occasional one.

After debunking these 7 myths about solar panels, we realize that, in reality, they are a viable, economical and efficient solution for generating energy. Solar panels can work even on cloudy days or in winter, are not overly expensive, do not require difficult or expensive maintenance, and are very efficient.

source

[1] https://www.ise.fraunhofer.de/content/dam/ise/de/documents/publications/studies/Photovoltaics-Report.pdf
[2] “Press Release: NREL Creates 1-Sun Solar Cell with Maximum Efficiency.” Nrel.gov, 2022, www.nrel.gov/news/press/2022/nrel-creates-highest-efficiency-1-sun-solar-cell.html#:~:text=Researchers%20at%20the%20U.S.%20Department, using%20standard%201%2Dsun%20conditions. Accessed November 1, 2023.
[3] “Press Release: NREL Creates 1-Sun Solar Cell with Maximum Efficiency.” Nrel.gov, 2022, www.nrel.gov/news/press/2022/nrel-creates-highest-efficiency-1-sun-solar-cell.html#:~:text=Researchers%20at%20the%20U.S.%20Department, using%20standard%201%2Dsun%20conditions. Accessed November 1, 2023.
[4] Baker, Sam. “How many solar panels do I need to power a house?” Solar.com, June 20, 2023, www.solar.com/learn/how-many-solar-panels-do-i-need-to-install/. Accessed November 1, 2023.