Ofgem is responsible for setting the price controls for the four electricity and gas transmission companies which own Britain’s high-voltage national networks and the national gas pipeline. These are:
- National Grid Electricity Transmission (NGET);
- National Grid Gas NTS (National Transmission System);
- Scottish Power Transmission Limited (SPTL); and
- Scottish Hydro-Electric Transmission Limited (SHETL).
Current Price Control Work
The current price control (TPCR4) took effect on 1 April 2007 and is due to expire on 31 March 2012. To ensure that Ofgem can reflect the final conclusions of the RPI-X@20 review (which was to implement the RIIO model for network regulation) the Authority decided to extend the current price control by one year and Ofgem are now undertaking the TPCR4 Roll-over.
Ofgem has recently commenced work on the next ‘full’ price control review for electricity and gas transmission - RIIO-T1 (formally known as TPCR5). This will run in parallel with work on the next price control for gas distribution - RIIO-GD1 (formally known as GDPCR2).