Song Of Stone by Iain Banks (if you couldn't tell, it's apparently 'a novel').
Post-apocalyptic setting set after presumably a world war of sorts but with spatterings of today's technology but dumbed down due to lack of resources. Typical Banks where not too much happening apart from a lot of thought processes and character building until about half way into the story. Interestingly, it's set in first perspective and third at the same time, where he refers to himself as 'I' or 'me', but refers to his lady as 'you'.