As you can see the old Art Deco building is going to be swamped by the modern buildings. The four reconstructed chimneys, one of which I hear will have a viewing platform or something on the top (how much will that view cost?!) will probably be the only part of the building visible from the South.
Here's a link to a post I wrote almost 3 years ago to the day about on here about my concerns for this site (and my suggested solution!).
I just recalled the film Sympathy For The Devil where in some scenes the old derelict site can be seen full of scrap car merchants etc. And, I may be going mad but I pretty sure the site was also used as a location in a Bob Hoskins film; either Mona Lisa or Long Good Friday, both excellent films, and worth revisiting for a bit of late-70s/early-80s old London-spotting.
More about Battersea Power Station here:
BBC report
Battersea Power Station's official site