There can be many different intentions behind a source.
Therefore, it is important to keep a critical mindset in order to better decode the motive of the source.
Start by asking yourself why the source is written
who it is written for and what the purpose of the source is?
Is the source written with the purpose of informing or does it try to sell something
like a politicial agenda or a commercial product?
If you are searching for information about solar panels for instance
this homepage could be quite useful.
But at the same time it is obvious that the main purpose is to sell a product!
Regardless whether the information is sound or not
it can be problematic to use sources that have clear commercial interests.
Instead it can be a good idea to get information about the solar panels
From an official source like the Danish Energy Agency who works independently from commercial and political interests.