Everything You Wanted to Know about Solar Panels Efficiency

solar panels efficiency

If you are like most homeowners looking to go solar, you’d like to know who the most sought-after solar panel installers in San Marcos are so you could pick their brains. If you know what proper installation consists of and if you are familiar with all the intricacies of a solar power system’s design, you probably already have a good grasp of what makes a solar power system efficient. Not to worry if that’s not the case, though – we’ll show you the way. To start with, here’s everything you need to know about solar panels efficiency!

How is the efficiency of solar panels measured?

The efficiency of solar panels, that is, of the solar cells inside the panels, is a measurement of their capacity to generate electricity from solar power. In other words, it is the portion of solar energy they are capable of converting into usable electricity. The efficiency of most solar panels is somewhere between 15 and 18 percent, while the most efficient ones reach about 23 percent efficiency. That means that they convert 23 percent of the solar energy they attract into usable electricity. Add some batteries for storage and you’re all set!

What affect solar panels efficiency?

The two major factors affecting the efficiency of solar panels are reflectance efficiency and thermodynamic efficiency. Reflectance efficiency measures the amount of sunlight that ends up not being absorbed and used so that, ideally, reflectance should be reduced as much as possible. Thermodynamic efficiency is the maximum efficiency that can be reached and it’s usually limited at around 86 percent. At that point, the panels start generating thermal energy instead of electricity.

Various types of anti-reflective coating and textured surfaces are used for reflectance reduction. Thermodynamic efficiency can be increased using multi-junction solar cells.

Environmental factors to consider

Among the obvious factors that reduce efficiency are any tall nearby buildings, trees or heavy clouds. The less obvious factors are dust and dirt, but these can be easily eliminated – either wait for a rain shower or clean them yourself.

One popular misconception is that solar panels are only useful during the warm months. However, the system uses light, not heat, to generate electricity, so as long as there’s plenty of sunlight, there’s nothing to worry about. In fact, panels function better in cooler temperatures, so winter might be the time of year when they are most productive.

Does solar panels efficiency equal cost-effectiveness?

Not necessarily, and it all depends on the features of your roof – its size, style, the slant and direction. In other words, a less efficient solar panel could be more cost-effective in your case. This is why you need an experienced professional to decide on the right solar panel type for your home.

Action Solar: optimum solar panels efficiency for your home

For many homeowners, going solar remains an uncharted territory which is a shame, especially if they live in San Marcos. If you are among them, allow us to step in! Action Solar has a well-earned reputation as the leading full-service solar installation company. We can give you a custom-designed solar panel system that is guaranteed to achieve high performance and be the most cost-effective solution for your home. Our team is the best in the business, so be sure to give us a call!