As an entrepreneur, you naturally want to get the most return from your investment. You are then faced with the choice: do you choose cheap, or do you choose quality? When it comes to solar panels, the knowledge and expertise of an installer plays a major role. In this article we will delve into the question: how great is the influence of the installer on the yield to be achieved?
One solar panel generates more power than the other. That makes sense. There are many variables that together determine how much power a solar panel installation actually generates. Think, for example, of the available (roof) surface, the power of the solar panels, the amount of sun hours or the location and the angle of inclination of the solar panels in relation to the sun. But does the choice of an installer also affect the energy yield?
Difference in installation
Suppose we have two exactly the same take solar panels, but put them through two various install parties. There is a chance that they will make a different installation plan for the solar panel installation. There can also be a difference in the use of the type of cables, connectors and wire trays. But what is also important: how is the wiring? Are minus and plus next to each other or not? Are there connectors in the water after it rains? Can pests get to the cables? What brand of RCDs are used? Does an installer install according to the Scope 12 standard? You can imagine that the way in which the installation is laid out influences the amount of electricity generated.
Negative influence
In an ideal situation, a solar panel installation generates as much power as is calculated by the manufacturer. But in reality you can also have to deal with damaged or incorrectly connected panels, current that leaks, earth leakage switches that get too hot. And so on. The system generates less than it could because some factor negatively affects the installation. Just let this be what it is where the installer is jointly responsible for!
performance rate
We call the correction that we apply for the above system losses the Performance Ratio† A common solar panel installation has a Performance Ratio of 75 to 90%. A very good installation even performs above 90%. Moderate installations have a Performance Ratio below 75%. If you were to put this variable in a calculation, you would gain insight into the difference in energy yield, which is partly due to the installation method. In this article you can see an example calculation that shows that a difference in Performance Ratio can easily result in a difference in yield of hundreds of thousands of kWh. That means a difference in return that quickly amounts to well into the tens of thousands of euros in lost income.
Choose yield
The installer with a more expensive quote is not by definition the party with the largest margin. There is a chance that he know better what he does, that he works with better - and therefore more expensive - brands, that he has more experience, that he has better educated and trained personnel, that he uses better calculation models. And so on. His offer can more expensive seem, but that one-time higher investment can be quite 'beneficial' - read: more profitable - Hatch.
So choose your installer carefully. Energy Shift is the solar panel specialist in the Netherlands. Thanks to the extensive experience and knowledge, the system loss is minimal and the return is maximum. Are you curious about what a solar panel installation can provide you? Calculate it easily via the online calculator on the Energy Shift website.