I'm considering how to provide some heating to an extension. Off the
kitchen, it's a utility room with shower room beyond, total area about
7m x 2.5m.
There is CH to the kitchen but I haven't yet determined whether it can
be extended to provide radiators.
I'm looking at electrically-powered underfloor heating (area will be
all floor tiles). However, as the roof gets a lot of sunlight I also
wondered if solar panels used to run warm water might be a viable
alternative.

Any observations from anyone who has done something similar?