Electricity bill are definitely high in Spain....more expensive than the UK I think and the worrying thing is that they are only set to soar in the coming years.
I work in the business, and we often find people don't realise how much electricity people use in maintaining hot water, even if they are not actually at the property. (obviously this depends on what kind of system you have).
In any case, I think there is also a lack of awareness about the potential huge subsidies available from the Andalucian government. Depending on the property and type of installation required, you can get subsidies ranging from 40 to 80%.
However, you need to do it through a company that's got the necessary accreditation from the Andalucian government to carry out such projects and there are only a handful of companies that have it....you won't be surprised to hear that we are one of them!
With regards to Ian - who started the thread - I'm not sure whether you would be eligible if you're not living in Spain (worth looking into) but for anyone living in Spain, it would be crazy not to explore the opportunity....get subsidised to reduce your bills! Having said that, even if you you're not eligible for the subsidy, solar power is definitely worth thinking about.
Oasis Climate Control