The Best Practices for Choosing Solar Panel Systems

Solar panels are probably already familiar to you if you are seeking a means to reduce your utility bills while also powering your home with environmentally friendly energy. In addition to powering the system at home, these user-friendly solar energy converters may heat water and the building itself.

We will do our best to address any inquiries you may have regarding the purchase of solar panels for home and the selection of appropriate batteries.

Solar panel system installation
photo credit: CC0

Key considerations when selecting best solar panels

Solar panel optimization, like home system selection in general, requires an individualized strategy that takes into consideration the fundamental demands of the homeowner.

Solar panels are primarily defined by the following features: Factors such as cost, panel count, efficiency, thermal coefficient, panel type, and power are important.

To choose the best solar panels for home, you must be familiar with the specific parameters of each of the criteria.

Price of residential solar power systems

Determining the exact cost of a single solar system is challenging. In addition, the price changes annually and is region-specific. Solar panel system kits can range in price depending on a number of factors, though:

  • Quantity, expressed as watts;
  • The solar panels’ price is directly proportional to their brand name;
  • The price of a kit is directly proportional to its physical size;
  • Manufacturing components, such as monocrystalline or polycrystalline glass, or even thin-film panels;
  • The length of the warranty is typically what determines how long something lasts.

The most costly kits do not ensure that they are appropriate for your house or will endure for a long time; this much is true. On the other hand, you should not skimp on quality or power just because an alternative is cheap.

To get an idea of how much it will cost, you might use a solar panel system calculator.

Number of panels

The following conditions have an impact on this selection parameter:

  • The available space at the installation site—if there is not enough room on the roof or elsewhere, you will have to reduce the number of panels and use some of the electricity from the main grid to make up for it;
  • Daily energy consumption—this is the mean figure for the whole year. The number of people living in the household also has an impact on energy use. Some examples of extra usage include running workshop equipment or air conditioners during the heat;
  • Calculating the number of hours that the sun actively influences the surface of the panel requires region-specific information, such as the difference in sunshine intensity and length between Kentucky and California.

All of these factors need to be defined in advance in order to specify the appropriate kit size for your house.

Solar panel installation

Efficient Use of Solar Panels

Various solar panel types always include this parameter. The amount of the sun’s energy the panel is able to transform into usable power is expressed as a percentage. However, keep in mind that the performance indicator’s value changes over time.

There are several factors that affect it:

  • Consider the panel’s age carefully before purchasing a used solar panel, no matter how cheap it is; each year, the panel loses approximately 0.5% of its efficiency.
  • Installing a solar panel is a complex process, so it is best to hire a professional who can oversee the site preparation and installation of your panels.
  • It is crucial to clean and maintain the panels regularly. Efficiency decreases rapidly on a dirty surface.
  • Environmental temperature: when the temperature outside is very high, the panels’ efficiency drops.

The manufacturer’s power guarantee is an important consideration. It shows how well the panels work after a specific amount of time, which the manufacturer promises.

Coefficient of temperature

This metric was previously covered in the efficiency section. In other words, you care a lot about the local air temperature. It is preferable if the temperature coefficient is low. It states that for every degree Celsius that the temperature rises, efficiency decreases.

Panel type

There are two main varieties of conventional top solar panels, which are characterized by their silicon content: monocrystalline and polycrystalline.

With an efficiency indicator ranging from 15% to 20%, monocrystalline panels are more efficient. There is a price premium for this panel type. Black is the distinguishing feature.

Less efficient than monocrystalline panels (13% to 16%) but less expensive. You can tell them apart by looking at the blue surface of the work area.

A variety of thin-layer panels are available. They come in a variety of colors and can be applied to windows as a flexible film. The one negative aspect of this set is that they are not as efficient as regular panels.

An expert should determine which type is best suited to your working circumstances. It would be ideal if we could just use a special film to seal the windows and avoid having to deal with the installation of roof solar panels, but unfortunately, this is only an option in extreme circumstances.


The output power indicator displays the maximum output power that the battery is capable of producing. While most batteries have an output power of 250 W to 360 W, you do have the option to select batteries with 400 W of power.

The power that is produced is dependent on how much power is used in the home. Power bills are a common source for this information; all you need is the number of watts used at a specific moment to get the answer.

When deciding how many panels to include in a set, power is a major factor.

Rooftop solar panel installation
photo credit: CC0


Solar powering your home does not require you to be an expert in solar panel systems, but you should be familiar with choosing the correct batteries for the job. The solar panel kit cost calculator can be used when basic parameters have been determined. This value won’t be final, though, because of some subtleties that only an expert can determine. Plus, they will have an impact on the price, but it might not go up. It is possible that the actual cost of the panels will be less than what the calculator estimated.