Highly recommend Diego, Dicasa electricidad, He did ours for us back in 2019. We are a third floor flat with the meters on the ground floor so there was a lot of new cabling to do. He's very professional, very "can do" and has also put in an electric water heater, an air con unit and an electric cooker. The increased potentia job was 630 euros including IVA. This included dealing with Iberdrola to get the boletin.We increased to 5.75kw. Be aware that you will pay more every month on your electricity bill for the increased potencia
He does everything over whatsapp, his number is +34 676 99 70 08