I'm sorry if it came out as prejudicial. It was not intended in this way. It was more of an observation after having lived there for some years and witnessed it first hand.
I did a quick search for more objective observations and what I found was:
Homes labelled A, B and C account for less than 10% of the housing stock. […] Most of households in the sample (52%) are E rated. F and G rated residences account for almost 25% of the sample. [1][2]
In Spain, buildings are currently responsible for 31% of energy consumption. […] the classification A - the highest - involves spending up to 10 times less than the G - the lowest -. Currently, in Spain most buildings have an E, F or G rating.[3]
I did a quick search for more objective observations and what I found was:
Homes labelled A, B and C account for less than 10% of the housing stock. […] Most of households in the sample (52%) are E rated. F and G rated residences account for almost 25% of the sample. [1][2]
In Spain, buildings are currently responsible for 31% of energy consumption. […] the classification A - the highest - involves spending up to 10 times less than the G - the lowest -. Currently, in Spain most buildings have an E, F or G rating.[3]
[1] https://www.sciencedirect.com/science/article/pii/S030142151... (4. Results and discussion)
[2] https://en.wikipedia.org/wiki/European_Union_energy_label
[3] https://www.interregeurope.eu/enerselves/news/news-article/2...