Ofgem published their consultation on future network charging arrangements on 23 July 2018 (www.ofgem.gov.uk/publications-and-updates/getting-more-out-our-electricity-networks-through-reforming-access-and-forward-looking-charging-arrangements). Within this consultation, Ofgem sets out its intent to consider whether Low and High Voltage generation within Generation Dominated Areas (GDA) should incur a charge rather than always receive a credit, as is currently the case.
To assist embedded generators assess whether they currently connect to a GDA, Energy Potential has compiled an impact analysis. This analysis is based upon data compiled and published by DNOs in 2015 when the issue of GDAs was last considered. Although this data is a number of years out of date, it is probably the best data currently available to provide an indication of whether a primary substation is considered generation dominated and would be captured if Ofgem decide to charge generators in these areas.
The spreadsheet below provides the a list of the primary substations that are considered to be generation dominated. In some cases the MPANs of HV connected generation is also provided. The definition of a Generation Dominated area used is as follows:
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