From DCLG:
A recent review of lodgement fees has found that the current level of fees is not sufficient to meet the cost of operating the Registers. This is because the volume of transactions has fallen significantly below that anticipated when the Registers were introduced and there have also been a number of service enhancements. Lodgement fees have remained unchanged since the domestic and non-domestic EPC Registers came into operation in 2007 and 2008 respectively.
It is therefore necessary to increase fees for lodging documents onto the EPC Registers. Fees will increase from £1.15 to £1.67 for a domestic lodgement and from £5.36 to £11.81 for a non-domestic lodgement. These new fees will be set by an amendment to the Energy Performance of Buildings (England and Wales) Regulations 2012, which will come into force on 6 April 2013. The increase will ensure that the fees cover the full cost of operating the Registers and will also insure against any risk of additional liabilities being borne by taxpayers.