Spurred by random comments in here, I have decided to build a better 'grid monitoring' panel
Results so far are very alpha, but I hope to extend this and mrtg it for graphs over time as well.
See
If anyone wants to do the same, the thing is designed to run on a linux server, and the core bit is a C curl program that sucks and parses data off the national grid website.
That's invoked by the server snmpd as an extension, so I can then run mrtg on it as well.
The web page is php calling snmpget to pull the live data off the remote website and then prettified with some custom dials.
and set to refresh every two minutes.
Beware, the site is down for maintenance tomorrow..(Fri 11th)