The Energy group normally meets on the third Monday of the month.
In 2010 this will be:

18 January
15 February
15 March
19 April
17 May
21 June
19 July
16 August - may not and have the month off, so check before
20 September
18 October
15 November
20 December

Check out the forum: http://www.transitionchichester.org/?q=forum/5