http://www.legislation.gov.uk/uksi/2005/2965/article/2/made
The Energy Act 2004 (Commencement No. 6) Order 2005
Electricity supply
VAT
King's Printer of Acts of Parliament
2016-03-18
ELECTRICITY
GAS
This Order brings into force the provisions of the Energy Act 2004 as follows—section 177 on 1st November 2005;section 179, and the associated repeals in section 197(9) and Schedule 23, on 1st April 2006, except for the purposes specified in article 3(2), for which they shall come into force on 1st April 2010.
Commencement2
Section 177 of the Act shall come into force on 1st November 2005.