We have a house in dept 17 with a south-west facing roof, I am thinking about having photovoltaic solar panels installed. We are not resident in France for Tax, and indeed are only there 6-8 weeks per year in total. So my thinking was that we would mainly be selling back to the grid, and from what I understand we can expect an approximate return of 10% PA on our investment (rather better than you would get in a bank) - and just keep the money in our French bank account for when we are over. My question: is the return realistic and are there any pitfalls others have come across.
Thanks in advance.