UKPX Auction Index Methodology

The Auction indices for EPEX SPOT (formerly APX Power UK) Day-Ahead Auction shall be established on a daily basis using the following methodology:

UKPX Auction Base

Non-weighted arithmetic average of the matching prices of each Hour instrument between 23:00 and 23:00 prevailing UK local time.

UKPX Auction Peak

Non-weighted arithmetic average of the matching prices of each Hour instrument between 07:00 and 19:00 prevailing UK local time.

UKPX Auction Off-peak

Non-weighted arithmetic average of the matching prices of each Hour instrument between 23:00 and 07:00 & 19:00 and 23:00 prevailing UK local time.

 

Index Publishing

The EPEX SPOT (formerly APX Power UK) Indices will be published on the APX Website on a daily basis after 11:00 prevailing UK local time.